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Artículos de revistas sobre el tema "Quantum double model"

Autor: Grafiati

Publicado: 7 de diciembre de 2024

Última modificación: 31 de julio de 2025

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1

Favalli, T., and A. Smerzi. "A model of quantum spacetime." AVS Quantum Science 4, no. 4 (2022): 044403. http://dx.doi.org/10.1116/5.0107210.

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We consider a global quantum system (the “Universe”) satisfying a double constraint, both on total energy and total momentum. Generalizing the Page and Wootters quantum clock formalism, we provide a model of 3 + 1 dimensional, non-relativistic, quantum spacetime emerging from entanglement among different subsystems in a globally “timeless” and “positionless” Universe.

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2

Fiedler, Leander, and Pieter Naaijkens. "Haag duality for Kitaev’s quantum double model for abelian groups." Reviews in Mathematical Physics 27, no. 09 (2015): 1550021. http://dx.doi.org/10.1142/s0129055x1550021x.

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We prove Haag duality for cone-like regions in the ground state representation corresponding to the translational invariant ground state of Kitaev’s quantum double model for finite abelian groups. This property says that if an observable commutes with all observables localized outside the cone region, it actually is an element of the von Neumann algebra generated by the local observables inside the cone. This strengthens locality, which says that observables localized in disjoint regions commute. As an application, we consider the superselection structure of the quantum double model for abelia

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3

Chen, Lei, Zhen-Yu Wang, Wu Hui, et al. "Quantum ratchet effect in a time non-uniform double-kicked model." International Journal of Modern Physics B 31, no. 16-19 (2017): 1744063. http://dx.doi.org/10.1142/s0217979217440635.

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The quantum ratchet effect means that the directed transport emerges in a quantum system without a net force. The delta-kicked model is a quantum Hamiltonian model for the quantum ratchet effect. This paper investigates the quantum ratchet effect based on a time non-uniform double-kicked model, in which two flashing potentials alternately act on a particle with a homogeneous initial state of zero momentum, while the intervals between adjacent actions are not equal. The evolution equation of the state of the particle is derived from its Schrödinger equation, and the numerical method to solve th

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4

Vimala, Palanichamy, and N. R. Nithin Kumar. "Explicit Quantum Drain Current Model for Symmetric Double Gate MOSFETs." Journal of Nano Research 61 (February 2020): 88–96. http://dx.doi.org/10.4028/www.scientific.net/jnanor.61.88.

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In this article, an analytical model for Double gate Metal Oxide Semiconductor Field Effect Transistor (DG MOSFET) is developed including Quantum effects. The Schrodinger–Poisson’s equation is used to develop the analytical Quantum model using Variational method. A mathematical expression for inversion charge density is obtained and the model was developed with quantum effects by means of oxide capacitance for different channel thickness and gate oxide thickness. Based on inversion charge density model the compact model is developed for transfer characteristics, transconductance and C-V curves

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5

Cui, Shawn X., Dawei Ding, Xizhi Han, et al. "Kitaev's quantum double model as an error correcting code." Quantum 4 (September 24, 2020): 331. http://dx.doi.org/10.22331/q-2020-09-24-331.

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Kitaev's quantum double models in 2D provide some of the most commonly studied examples of topological quantum order. In particular, the ground space is thought to yield a quantum error-correcting code. We offer an explicit proof that this is the case for arbitrary finite groups. Actually a stronger claim is shown: any two states with zero energy density in some contractible region must have the same reduced state in that region. Alternatively, the local properties of a gauge-invariant state are fully determined by specifying that its holonomies in the region are trivial. We contrast this resu

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6

Duan, Zhongzheng, Wenxi Luo, and Xiaohan Xu. "Transmission coefficient in double barrier quantum tunnelling effect." Theoretical and Natural Science 25, no. 1 (2023): 199–204. http://dx.doi.org/10.54254/2753-8818/25/20240965.

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At the turn of the twentieth century, the establishment of quantum theory propelled rapid advancements, particularly in the understanding of quantum tunnellinga fundamental phenomenon in quantum mechanics crucial for various physical processes. The quantum phenomenon of particle passes through potential barriers is of great importance. In classical physics, when the energy of a particle is less than the height of a double barrier structure, it is impossible for it to pass through. However, quantum mechanics allows a particle to penetrate the barrier and emerge on the other side. This paper exp

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7

Chen, Zuo Peng, and Jin Ran Gao. "The Research of Qubit-Field System Quantum Entanglement under J-C Model." Applied Mechanics and Materials 203 (October 2012): 464–68. http://dx.doi.org/10.4028/www.scientific.net/amm.203.464.

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In this article we plan to get a equation about the concurrence. We select the J-C model, then introduce the double-cavity and double-atom system in this model, and consider the two-atom entanglement. By using the Taylor expansion to calculate the quantum correlations concurrence in this system. Finally we deduce this equation which can predict the sudden death and rebirth of the spin quantum entanglement.

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8

Cowtan, Alexander, and Shahn Majid. "Quantum double aspects of surface code models." Journal of Mathematical Physics 63, no. 4 (2022): 042202. http://dx.doi.org/10.1063/5.0063768.

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We revisit the Kitaev model for fault tolerant quantum computing on a square lattice with underlying quantum double D( G) symmetry, where G is a finite group. We provide projection operators for its quasiparticles content as irreducible representations of D( G) and combine this with D( G)-bimodule properties of open ribbon excitation spaces [Formula: see text] to show how open ribbons can be used to teleport information between their endpoints s0, s1. We give a self-contained account that builds on earlier work but emphasizes applications to quantum computing as surface code theory, including

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9

Edwards, D. M., A. C. M. Green, and K. Kubo. "Quantum spins in the double exchange model of manganites." Physica B: Condensed Matter 259-261 (January 1999): 810–11. http://dx.doi.org/10.1016/s0921-4526(98)00944-2.

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10

Beigi, Salman, Peter W. Shor, and Daniel Whalen. "The Quantum Double Model with Boundary: Condensations and Symmetries." Communications in Mathematical Physics 306, no. 3 (2011): 663–94. http://dx.doi.org/10.1007/s00220-011-1294-x.

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11

de Martino, Salvatore, Silvio de Siena, and Pasquale Sodano. "Critical behavior of the quantum double-sine-Gordon model." Physical Review B 32, no. 5 (1985): 3304–5. http://dx.doi.org/10.1103/physrevb.32.3304.

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12

Aukusti Laine, Timo. "Semantic Wave Functions: Exploring Meaning in Large Language Models through Quantum Formalism." Open Access Journal of Applied Science and Technology 3, no. 1 (2025): 01–22. https://doi.org/10.33140/oajast.03.01.11.

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Large Language Models (LLMs) encode semantic relationships in high-dimensional vector embeddings. This paper explores the analogy between LLM embedding spaces and quantum mechanics, positing that LLMs operate within a quantized semantic space where words and phrases behave as quantum states. To capture nuanced semantic interference effects, we extend the standard realvalued embedding space to the complex domain, drawing parallels to the double-slit experiment. We introduce a ”semantic wave function” to formalize this quantum-derived representation and utilize potential landscapes, such as the

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13

Strubbe, Filip. "Single-Photon Double-Slit Interference in the 4+1 Formalism." Universe 8, no. 10 (2022): 511. http://dx.doi.org/10.3390/universe8100511.

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Unifying quantum theory with general relativity is challenging because of several problems related to time and to collapse in quantum measurements. In the double-slit experiment, the questions are how the momentum of the photon is transferred to a specific location on the screen and how the double slit recoils accordingly. This work investigates if these problems can be solved by adding a second time τ, which acts as an external evolution parameter, to standard four-dimensional spacetime. Within the resulting 4+1 formalism, a model for the single-photon double-slit experiment is developed. On

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14

HASEGAWA, MASAHITO. "A quantum double construction in Rel." Mathematical Structures in Computer Science 22, no. 4 (2012): 618–50. http://dx.doi.org/10.1017/s0960129511000703.

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We study bialgebras and Hopf algebras in the compact closed categoryRelof sets and binary relations. Various monoidal categories with extra structure arise as the categories of (co)modules of bialgebras and Hopf algebras inRel. In particular, for any groupG, we derive a ribbon category of crossedG-sets as the category of modules of a Hopf algebra inRelthat is obtained by the quantum double construction. This category of crossedG-sets serves as a model of the braided variant of propositional linear logic.

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15

Secchi, Andrea, and Filippo Troiani. "Multi-Dimensional Quantum Capacitance of the Two-Site Hubbard Model: The Role of Tunable Interdot Tunneling." Entropy 25, no. 1 (2022): 82. http://dx.doi.org/10.3390/e25010082.

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Few-electron states confined in quantum-dot arrays are key objects in quantum computing. The discrimination between these states is essential for the readout of a (multi-)qubit state, and can be achieved through a measurement of the quantum capacitance within the gate-reflectometry approach. For a system controlled by several gates, the dependence of the measured capacitance on the direction of the oscillations in the voltage space is captured by the quantum capacitance matrix. Herein, we apply this tool to study a double quantum dot coupled to three gates, which enable the tuning of both the

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16

dos Santos, Antônio Carlos Fontes, Joselito Barbosa Maciel, Alexandre Braga Rocha, and Gerardo Gerson Bezerra de Souza. "Double and Triple Photoionization of CCl4." Atoms 12, no. 12 (2024): 74. https://doi.org/10.3390/atoms12120074.

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(1) Background: Fragmentation after double and triple photoionization of the CCl4 molecule in the valence, Cl 2p, and C 1s regions have been reported; (2) Methods: We have used photoion-photoion (PIPICO) coincidence technique combined with synchrotron radiation. In addition, ab initio quantum mechanical calculations were done at multiconfigurational self-consistent and multireference configuration interaction to describe ground and inner-shell states; (3) Results: We have observed coincidences involving singly and doubly charged fragments coming from the doubly and triply ionized molecule. We

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17

Wang, M. J., F. Y. Yue, and F. M. Guo. "Photoelectric Characteristics of Double Barrier Quantum Dots-Quantum Well Photodetector." Advances in Condensed Matter Physics 2015 (2015): 1–6. http://dx.doi.org/10.1155/2015/920805.

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The photodetector based on double barrier AlAs/GaAs/AlAs heterostructures and a layer self-assembled InAs quantum dots and In0.15Ga0.85As quantum well (QW) hybrid structure is demonstrated. The detection sensitivity and detection ability under weak illuminations have been proved. The dark current of the device can remain at 0.1 pA at 100 K, even lower to3.05×10-15 A, at bias of −1.35 V. Its current responsivity can reach about6.8×105 A/W when 1 pw 633 nm light power and −4 V bias are added. Meanwhile a peculiar amplitude quantum oscillation characteristic is observed in testing. A simple model

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18

Bagrov, V. G., D. M. Gitman, A. D. Levin, and M. S. Meireles. "Entanglement of two-electron spin states in a double quantum dot." International Journal of Quantum Information 15, no. 01 (2017): 1750006. http://dx.doi.org/10.1142/s021974991750006x.

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Recently, an implementation of a universal set of one- and two-quantum-bit gates for quantum computation using spin states of coupled single-electron quantum dots was proposed. It was demonstrated that it is possible to execute a coherent control of a quantum system based on two-electron spin states in a double quantum dot, allowing state preparation, coherent manipulation, and projective readout. This possibility is based on rapid electrical control of the spin exchange interaction. These results motivated us to develop a formal theoretical study of the corresponding model of two coupled spin

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19

Kasapoglu, Esin, Melike Behiye Yücel, and Carlos A. Duque. "Harmonic-Gaussian Symmetric and Asymmetric Double Quantum Wells: Magnetic Field Effects." Nanomaterials 13, no. 5 (2023): 892. http://dx.doi.org/10.3390/nano13050892.

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In this study, we considered the linear and non-linear optical properties of an electron in both symmetrical and asymmetrical double quantum wells, which consist of the sum of an internal Gaussian barrier and a harmonic potential under an applied magnetic field. Calculations are in the effective mass and parabolic band approximations. We have used the diagonalization method to find eigenvalues and eigenfunctions of the electron confined within the symmetric and asymmetric double well formed by the sum of a parabolic and Gaussian potential. A two-level approach is used in the density matrix exp

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20

MCMAHON, W. E., T. MILLER, and T. C. CHIANG. "A THEORETICAL AND EXPERIMENTAL STUDY OF ELECTRONIC CONFINEMENT, COUPLING, AND TRANSLAYER INTERACTION IN NOBLE-METAL QUANTUM-WELL STRUCTURES." Modern Physics Letters B 08, no. 18 (1994): 1075–96. http://dx.doi.org/10.1142/s0217984994001084.

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Noble-metal multilayer systems have been grown and examined with angle-resolved photoemission. Surface states, and single and double quantum wells have been studied experimentally; the results can be explained with a simple theoretical model based upon Bloch electrons. In this paper, we will present our model and then give a description of some experimental studies which utilize the model. In particular, we will consider double-quantum-well systems which can be used to examine basic aspects of electronic confinement, layer–layer coupling, and translayer interaction through a barrier.

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21

DEKKER, H. "THE DISSIPATIVE DOUBLE-WELL POTENTIAL: A MULTILEVEL SPIN HOPPING ANALYSIS." Modern Physics Letters B 05, no. 05 (1991): 351–56. http://dx.doi.org/10.1142/s0217984991000411.

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A novel treatment is presented of the real-time dynamics of a quantum mechanical particle in a dissipative double-well potential at finite temperatures. The analysis is based on the bilinear coupling model Hamiltonian à la Zwanzig. The energy spectrum consists of a ladder of vibrational doublets. The usual truncation to the ground state doublet — à la Leggett et al. — is not required. The intra-doublet spin-boson dynamics is evaluated in the “noninteracting-blip approximation”. The inter-doublet vibrational relaxation gives rise to a stochastic hopping process.

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22

Liu, Weici, and Faqiang Wang. "Tunneling Current in a Double Quantum Dot Driven by Two-Mode Microwave Photons." Electronics 14, no. 3 (2025): 599. https://doi.org/10.3390/electronics14030599.

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In this study, a model of a double-quantum-dot system driven by two-mode microwave photons is presented. The quantum master equation is derived from the system’s Hamiltonians, and the expression for the steady-state current is obtained. Electronic tunneling properties are then analyzed. The results revealed that different two-mode quantum microwave photons have varying effects on the tunneling current within the double-quantum-dot system, with a steplike current trend emerging. The tunneling current showed pronounced negative differential conductance for both coherent and squeezed microwave ph

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23

Cheon, Taksu, and Sergey S. Poghosyan. "Asymmetric Quantum Transport in a Double-Stranded Kronig–Penney Model." Journal of the Physical Society of Japan 84, no. 6 (2015): 064006. http://dx.doi.org/10.7566/jpsj.84.064006.

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24

Chaves, Ferney, David Jiménez, and Jordi Suñé. "Explicit quantum potential and charge model for double-gate MOSFETs." Solid-State Electronics 54, no. 5 (2010): 530–35. http://dx.doi.org/10.1016/j.sse.2010.01.015.

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25

Halley, J. W., and David Price. "Quantum theory of the double layer: Model including solvent structure." Physical Review B 35, no. 17 (1987): 9095–102. http://dx.doi.org/10.1103/physrevb.35.9095.

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26

Penzin, Oleg, Gernot Paasch, and Lee Smith. "Nonparabolic Multivalley Quantum Correction Model for InGaAs Double-Gate Structures." IEEE Transactions on Electron Devices 60, no. 7 (2013): 2246–50. http://dx.doi.org/10.1109/ted.2013.2264165.

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27

Cruz-León, Sergio, Alvaro Vázquez-Mayagoitia, Simone Melchionna, Nadine Schwierz, and Maria Fyta. "Coarse-Grained Double-Stranded RNA Model from Quantum-Mechanical Calculations." Journal of Physical Chemistry B 122, no. 32 (2018): 7915–28. http://dx.doi.org/10.1021/acs.jpcb.8b03566.

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28

Sacchetti, Andrea. "Quantum resonances and time decay for a double-barrier model." Journal of Physics A: Mathematical and Theoretical 49, no. 17 (2016): 175301. http://dx.doi.org/10.1088/1751-8113/49/17/175301.

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29

Sangian, Messiah Charity, Ibnu Syuhada, Khairurrijal Khairurrijal, and Fatimah Arofiati Noor. "Temperature Effects on Quantum Ballistic Transport in Double-Gate MOSFETs Using Landauer–Büttiker Formalism." POSITRON 15, no. 1 (2025): 70–80. https://doi.org/10.26418/positron.v15i1.83947.

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This paper presents the development and application of a simulator utilizing the Landauer–Büttiker formalism to model quantum ballistic transport in double-gate (DG) metal-oxide-semiconductor field-efffect transistors (MOSFETs), focusing on temperature variations from 0.9 K to 300 K. The simulator employs advanced modelling techniques, including the exponential decay model, quantum interference model, and the Wentzel–Krames–Brillouin (WKB) approximation for transmission probability. Additionally, it incorporates the Landauer–Büttiker approach for current calculation and the gradual channel app

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30

Liu, Yu-Jie, Jing-Jing Wang, Li Zheng, Ying Shi, and Li Xiong. "Dynamic behavior of the quantum correlations of two cavity fields in the double Jaynes–Cummings model." Laser Physics Letters 19, no. 4 (2022): 045204. http://dx.doi.org/10.1088/1612-202x/ac5521.

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Abstract The influence of the atom’s spatial degrees of freedom and the purity of the initial state on the dynamics of Bell non-locality, entanglement, geometric measure of quantum discord (GMQD) and quantum discord in a double Jaynes–Cummings model are investigated. We study the above four quantum correlations for an initial Werner-like state between the electronic states of the two atoms and between the two cavities respectively and find that all these quantum correlations are sensitive to the wave packet width and the purity of the initial state. For Bell non-locality, we find the phenomeno

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31

DEBALD, STEFAN, TOBIAS BRANDES, and BERNHARD KRAMER. "NONLINEAR ELECTRON TRANSPORT THROUGH DOUBLE QUANTUM DOTS COUPLED TO CONFINED PHONONS." International Journal of Modern Physics B 17, no. 28 (2003): 5471–75. http://dx.doi.org/10.1142/s0217979203020594.

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The non-linear electron current through a double quantum dot embedded in a free standing quantum well is investigated. In such a model for a nano-size phonon cavity, the transport at low temperatures is mediated by the spontaneous emission of acoustic phonons. Phonon quantum size effects can be detected as steps in the current. Moreover, for our model we find van-Hove singularities in the phonon density of states that give rise to a strong, tuneable increase of phonon emission into characteristic modes. The emission characteristic, depending on the position of the dots in the cavity, is also c

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32

Xiang, Hao. "The improved quantum genetic algorithm with its application in fault diagnosis." Journal of Physics: Conference Series 2640, no. 1 (2023): 012002. http://dx.doi.org/10.1088/1742-6596/2640/1/012002.

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Abstract In this paper, by analyzing the characteristics of the simulated annealing algorithm (SA) and the real double-chain coding target gradient quantum genetic algorithm (DCQGA), the real double-chain coding target gradient quantum genetic simulated annealing algorithm (DCQGSAA) is proposed. Because the performance of LSSVR is extraordinarily sensitive to its key parameters, the proposed algorithm is used to optimize these parameters, then a hybrid non-parametric prediction model is put forward. This model is used in fault prediction of liquid rocket engine thrust. The simulation results s

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33

Li, Qiao, Bin Cheng, Moyu Chen, et al. "Tunable quantum criticalities in an isospin extended Hubbard model simulator." Nature 609, no. 7927 (2022): 479–84. http://dx.doi.org/10.1038/s41586-022-05106-0.

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AbstractStudying strong electron correlations has been an essential driving force for pushing the frontiers of condensed matter physics. In particular, in the vicinity of correlation-driven quantum phase transitions (QPTs), quantum critical fluctuations of multiple degrees of freedom facilitate exotic many-body states and quantum critical behaviours beyond Landau’s framework1. Recently, moiré heterostructures of van der Waals materials have been demonstrated as highly tunable quantum platforms for exploring fascinating, strongly correlated quantum physics2–22. Here we report the observation of

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34

Zhu, D., S. Johri, N. M. Linke, et al. "Generation of thermofield double states and critical ground states with a quantum computer." Proceedings of the National Academy of Sciences 117, no. 41 (2020): 25402–6. http://dx.doi.org/10.1073/pnas.2006337117.

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Finite-temperature phases of many-body quantum systems are fundamental to phenomena ranging from condensed-matter physics to cosmology, yet they are generally difficult to simulate. Using an ion trap quantum computer and protocols motivated by the quantum approximate optimization algorithm (QAOA), we generate nontrivial thermal quantum states of the transverse-field Ising model (TFIM) by preparing thermofield double states at a variety of temperatures. We also prepare the critical state of the TFIM at zero temperature using quantum–classical hybrid optimization. The entanglement structure of t

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35

Gentile, F., A. Montorsi, and M. Roncaglia. "Entanglement generation and dynamics for a Bose–Hubbard model in a double-well potential." International Journal of Quantum Information 12, no. 07n08 (2014): 1560014. http://dx.doi.org/10.1142/s021974991560014x.

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The study of entanglement between bosonic systems is of primary importance for establishing feasible resources needed for implementing quantum information protocols, both in their interacting atomic or photonic realizations. Atomic systems are particularly efficient in the production of large amounts of entanglement, providing higher information density than conventional qubit entangled states. Such increased quantum resources pave the way to novel fundamental tests of nature and efficient applications in quantum information, metrology and sensing. We consider a basic setup made up of two part

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36

Garashchuk, Sophya, Bing Gu, and James Mazzuca. "Calculation of the Quantum-Mechanical Tunneling in Bound Potentials." Journal of Theoretical Chemistry 2014 (April 24, 2014): 1–11. http://dx.doi.org/10.1155/2014/240491.

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The quantum-mechanical tunneling is often important in low-energy reactions, which involve motion of light nuclei, occurring in condensed phase. The potential energy profile for such processes is typically represented as a double-well potential along the reaction coordinate. In a potential of this type defining reaction probabilities, rigorously formulated only for unbound potentials in terms of the scattering states with incoming/outgoing scattering boundary conditions, becomes ambiguous. Based on the analysis of a rectangular double-well potential, a modified expression for the reaction prob

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37

Al-Nashy, Baqer, Sabeah Jasim, Ali Gehad Al-Shatravi, and Amin H. Al-Khursan. "Spontaneously generated coherence in ladder-plus-Y double quantum dot system." Proceedings of the Institution of Mechanical Engineers, Part N: Journal of Nanomaterials, Nanoengineering and Nanosystems 233, no. 2-4 (2019): 65–71. http://dx.doi.org/10.1177/2397791419859159.

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A model was presented for linear susceptibility in ladder-plus-Y configuration of double quantum dot system using density matrix theory and including spontaneously generated coherence of Λ-type system. Wetting layer and quantum dot inhomogeneity were considered in the calculations, which gives a practical description of double quantum dot structures well. With increasing spontaneously generated coherence from Λ-component, the dispersion was increased and shifted under spontaneously generated coherence. The inclusion of wetting layer under spontaneously generated coherence increases gain which

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38

Kisin, Mikhail V., Mitra Dutta, and Michael A. Stroscio. "ELECTRON-PHONON INTERACTIONS IN INTERSUBBAND LASER HETEROSTRUCTURES." International Journal of High Speed Electronics and Systems 12, no. 04 (2002): 939–68. http://dx.doi.org/10.1142/s0129156402001873.

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We present a simple semianalytical model, which allows comprehensive analysis of the LO-phonon assisted electron relaxation in quantum well intersubband semiconductor lasers. Examples of scattering rate tailoring in type-I double quantum well heterostructures and analysis of the subband depopulation process in type-II heterostructures illustrate applicability of the model.

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39

Herrebrugh, Albert V. ‎. "Determinism In Quantum Slit-Experiments." Hyperscience International Journals 2, no. 3 (2022): 115–21. http://dx.doi.org/10.55672/hij2022pp115-121.

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A mathematical model for the slit experiments in the heart of quantum mechanics is developed to gain insight into quantum ‎theory. The proposed system-theoretical model is entirely based on commutative mathematics, i.e. convolution, and integral ‎transformations, and starts with spacetime functions with inherent energy-based cause and effect relations of the state-‎function Ѱ in the complex Hilbert space. The benefits of his approach are as 1-Invariance in time reversal. 2-Deterministic ‎result functions in the model in line with the outcome of slit experiments. 3- Separation of causality and

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40

AOKI, KEN-ICHI, and TAMAO KOBAYASHI. "PHASE TRANSITION OF THE DISSIPATIVE DOUBLE-WELL QUANTUM MECHANICS." Modern Physics Letters B 26, no. 30 (2012): 1250202. http://dx.doi.org/10.1142/s0217984912502028.

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We investigate the critical dissipation of the double-well quantum mechanics. We adopt two-state approximation to define effective Ising models and apply the block decimation renormalization group and the finite range scaling method recently proposed for the long range Ising model. We briefly report the numerical results of the critical dissipation for various model parameters.

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41

Guarini, Eleonora, Douglas D. DiJulio, José I. Marquez Damian, Ubaldo Bafile, and Milva Celli. "Hydrogen Deuteride for Cold Neutron Production: A Model for the Double Differential Cross Section." Applied Sciences 14, no. 11 (2024): 4718. http://dx.doi.org/10.3390/app14114718.

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The present work deals with the modeling of the response to neutrons of heteronuclear diatomic liquids, with special interest in the case of hydrogen deuteride (HD), as a possible candidate for the moderation process required in the production of cold neutrons. Preliminary evaluations of the model giving the neutron double differential cross section of a heteronuclear vibrating rotor were performed in the recent past by using, as a first approximation, the ideal gas law for the center-of-mass translational dynamics. Here, the state-of-the-art methodology (based on the use of quantum simulation

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42

Xu, Qing-Jun, and Shi-Ying Zhang. "The Dynamics of Quantum Entanglement and General Quantum Correlations in the Double Tavis-Cumming Model." International Journal of Theoretical Physics 55, no. 3 (2015): 1438–46. http://dx.doi.org/10.1007/s10773-015-2783-z.

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43

Ferraro, Dario, Michele Campisi, Gian Marcello Andolina, Vittorio Pellegrini, and Marco Polini. "Quantum resources for energy storage." EPJ Web of Conferences 230 (2020): 00003. http://dx.doi.org/10.1051/epjconf/202023000003.

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Recently the possibility to exploit quantum-mechanical effects to increase the performance of energy storage has raised a great interest. It consists of N two-level systems coupled to a single photonic mode in a cavity. We demonstrate the emergence of a quantum advantage in the charging power on this collective model (Dicke Quantum Battery) with respect to the one in which each two-level system is coupled to its own separate cavity mode (Rabi Quantum Battery). Moreover, we discuss the model of a Quantum Supercapacitor. This consists of two chains, one containing electrons and the other one hol

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44

KRÁL, K., Z. KHÁS, P. ZDENĚK, M. ČERŇANSKÝ, and C. Y. LIN. "ELECTRON-ENERGY RELAXATION IN POLAR SEMICONDUCTOR DOUBLE QUANTUM DOTS." International Journal of Modern Physics B 15, no. 27 (2001): 3503–12. http://dx.doi.org/10.1142/s0217979201007403.

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The zero-dimensional semiconductor nanostructures belong to the candidates for the realization of the quantum bits. They are expected to be scalable for the purpose of tuning their physical properties. In these structures the quantum bit could be realized in the form of a single quantum dot with two electronic energy levels, with only one electron in the dot. As the basic states of the quantum bit, realized in this way, the two orbital states of the electron in the dot could be used. It appears however that usually the relaxation of the energy of the electron from the excited energy level is o

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45

Sasaki, M. "Toward implementation of coding for quantum sources and channels." Quantum Information and Computation 4, no. 6&7 (2004): 526–36. http://dx.doi.org/10.26421/qic4.6-7-11.

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We review our experiment on quantum source and channel codings, the most fundamental operations in quantum info-communications. For both codings, entangling letter states is essential. Our model is based on the polarization-location coding, and a quasi-single photon linear optics implementation to entangle the polarization and location degrees of freedom. Using single-photon events in a subset of possible cases, we simulate quantum coding-decoding operations for nonorthogonal states under the quasi-pure state condition. In the quantum channel coding, we double the spatial bandwidth (number of

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46

XIONG, HUA-HUI, TAOTAO QIU, YI-FU CAI, and XINMIN ZHANG. "CYCLIC UNIVERSE WITH QUINTOM MATTER IN LOOP QUANTUM COSMOLOGY." Modern Physics Letters A 24, no. 15 (2009): 1237–46. http://dx.doi.org/10.1142/s0217732309030667.

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In this paper, we study the possibility of model building of cyclic universe with Quintom matter in the framework of Loop Quantum Cosmology. After a general demonstration, we provide two examples, one with double-fluid and another double-scalar field, to show how such a scenario is obtained. Analytical and numerical calculations are both presented in the paper.

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47

ZHANG, X. Y. "QUANTUM MONTE CARLO ALGORITHM FOR CONSTRAINED FERMIONS." Modern Physics Letters B 05, no. 19 (1991): 1255–65. http://dx.doi.org/10.1142/s0217984991001532.

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Using path integral quantization in the subspace that forbids double occupancy, we introduce a quantum Monte Carlo algorithm for simulation of fermion models with constraint. The algorithm can be applied to a class of lattice fermion models, including the infinite-U Hubbard model and the t - J model.

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48

Gils, Charlotte. "Ashkin–Teller universality in a quantum double model of Ising anyons." Journal of Statistical Mechanics: Theory and Experiment 2009, no. 07 (2009): P07019. http://dx.doi.org/10.1088/1742-5468/2009/07/p07019.

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49

Su-Zhen, Luan, and Liu Hong-Xia. "Quantum compact model for thin-body double-gate Schottky barrier MOSFETs." Chinese Physics B 17, no. 8 (2008): 3077–82. http://dx.doi.org/10.1088/1674-1056/17/8/051.

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50

Isić, G., D. Indjin, V. Milanović, J. Radovanović, Z. Ikonić, and P. Harrison. "A quantum transport model for the double-barrier nonmagnetic spin filter." Journal of Physics: Conference Series 242 (July 1, 2010): 012008. http://dx.doi.org/10.1088/1742-6596/242/1/012008.

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