Relevant bibliographies by topics / Macroscopically Ocupied Quantum State

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Academic literature on the topic 'Macroscopically Ocupied Quantum State'

Author: Grafiati
Published: 4 June 2021
Last updated: 9 February 2022

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Journal articles on the topic "Macroscopically Ocupied Quantum State"

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Zagitova, Azaliya Azatovna, Andrey Sergeevich Zhuravlev, Leonid Viktorovich Kulik, and Vladimir Umansky. "Spin Transport in a Quantum Hall Insulator." Applied Sciences 11, no. 17 (2021): 8131. http://dx.doi.org/10.3390/app11178131.

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A novel experimental optical method, based on photoluminescence and photo-induced resonant reflection techniques, is used to investigate the spin transport over long distances in a new, recently discovered collective state—magnetofermionic condensate. The given Bose–Einstein condensate exists in a purely fermionic system (ν = 2 quantum Hall insulator) due to the presence of a non-equilibrium ensemble of spin-triplet magnetoexcitons—composite bosons. It is found that the condensate can spread over macroscopically long distances of approximately 200 μm. The propagation velocity of long-lived spi
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Zhang, Gang, Guan-Rong Li, and Zhi Song. "Quantum-state transfer between atom and macroscopically distinguishable cavity field in Jaynes–Cummings model." International Journal of Quantum Information 13, no. 01 (2015): 1550001. http://dx.doi.org/10.1142/s021974991550001x.

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We present a scheme for transferring quantum state between atom and cavity field in Jaynes–Cummings model (JC) in the aid of spin-echo-like technique. It is based on the facts that the atom in a cavity can induce the generation of modified coherent states (MCSs), which can be shown to be macroscopically distinguishable, and the anti-commutation relation between the Hamiltonian and the z-component Pauli matrix. We show that this scheme is applicable for a class of cavity field states. The application on two-cavity system provides an alternative scheme for preparation of non-local superpositions
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SHIMIZU, AKIRA, TAKAYUKI MIYADERA, and AKIHISA UKENA. "ANOMALOUS QUANTUM STATES IN FINITE MACROSCOPIC SYSTEMS." International Journal of Quantum Information 01, no. 04 (2003): 561–68. http://dx.doi.org/10.1142/s0219749903000425.

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We consider finite macroscopic systems, i.e. systems of large but finite degrees of freedom, which we believe are poorly understood as compared with small systems and infinite systems. We focus on pure states that do not have the "cluster property". Such a pure state is entangled macroscopically, and is quite anomalous in view of many-body physics because it does not approach any pure state in the infinite-size limit. However, we often encounter such anomalous states when studying finite macroscopic systems, such as quantum computers with many qubits and finite systems that will exhibit symmet
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Harada, Ryo, and Izumi Ojima. "A Unified Scheme of Measurement and Amplification Processes Based on Micro-Macro Duality — Stern-Gerlach Experiment as a Typical Example." Open Systems & Information Dynamics 16, no. 01 (2009): 55–74. http://dx.doi.org/10.1142/s1230161209000050.

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A unified scheme for quantum measurement processes is formulated on the basis of micro-macro duality as a mathematical expression of the general idea of quantum-classical correspondence. In this formulation, we can naturally accommodate the amplification processes necessary for magnifying quantum state changes at the microscopic end of the probe system into the macroscopically visible motion of the measuring pointer. Its essence is exemplified and examined in the concrete model of the Stern-Gerlach experiment for spin measurement, where the Helgason duality controlling the Radon transform is s
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Reid, M. D. "Bell Inequalities with Schrödinger Cats." Zeitschrift für Naturforschung A 56, no. 1-2 (2001): 220–23. http://dx.doi.org/10.1515/zna-2001-0140.

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Abstract In the Schrödinger cat gedanken experiment a “cat” is in a quantum superposition of two macroscopically distinct states. There is the apparent interpretation that the “cat” is not in one state or the other, “alive” or “dead”. Here this interpretation is proved objectively. I propose the following definition of macroscopic reality: first, that the “cat” is either dead or alive, the measurement revealing which; second, that measurements on other “cats” some distance away cannot induce the macroscopic change, “dead” to “alive” and vice versa, to the “cat”. The predictions of quantum mech
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6

Panasyuk, George Y., George A. Levin, and Kirk L. Yerkes. "Heat Transport between Heat Reservoirs Mediated by Quantum Systems." MRS Proceedings 1543 (2013): 43–48. http://dx.doi.org/10.1557/opl.2013.678.

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ABSTRACTWe explore a model of heat transport between two heat reservoirs mediated by a quantum particle. The reservoirs are modeled as ensembles of harmonic modes linearly coupled to the mediator. The steady state heat current, as well as the thermal conductance are obtained for arbitrary coupling strength and will be analyzed for the cases of weak and strong coupling regimes. It is shown that the violation of the virial theorem – the imbalance between the average potential and kinetic energy of the mediator – can be considered as a measure of the coupling strength that takes into account all
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7

Perna, Tomáš. "On One Controllability of the Schrödinger Equation as Coupled with the Atomic-Level Mannesmann Effect." Symmetry 12, no. 8 (2020): 1301. http://dx.doi.org/10.3390/sym12081301.

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In this paper we outline a certain way of understanding of macroscopically uncontrollable emergence of the so called Mannesmann effect by means of its induced controllable quantum-mechanical background. In other words, we factually present a modus operandi of how to avoid macroscopic models of specific atomic-level cavity origin based consequently on a classical fracture mechanics theory. Under such circumstances, the target solution of the controllable microscopic model cannot be determined, since it can obviously arise only as a macroscopic state of the structurally disturbed rolled metal se
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8

Yang, Sen, A. V. Mintsev, A. T. Hammack, L. V. Butov, and A. C. Gossard. "Repulsive interaction in the macroscopically ordered exciton state inGaAs∕AlxGa1−xAscoupled quantum well structures." Physical Review B 75, no. 3 (2007). http://dx.doi.org/10.1103/physrevb.75.033311.

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9

Kormos, Márton. "Inhomogeneous quenches in the transverse field Ising chain: scaling and front dynamics." SciPost Physics 3, no. 3 (2017). http://dx.doi.org/10.21468/scipostphys.3.3.020.

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We investigate the non-equilibrium dynamics of the transverse field quantum Ising chain evolving from an inhomogeneous initial state given by joining two macroscopically different semi-infinite chains. We obtain integral expressions for all two-point correlation functions of the Jordan--Wigner Majorana fermions at any time and for any value of the transverse field. Using this result, we analytically compute the profiles of various physical observables in the space-time scaling limit and show that they can be obtained from a hydrodynamic picture based on ballistically propagating quasiparticles
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10

Yamakawa, H., T. Miyamoto, T. Morimoto, et al. "Terahertz-field-induced polar charge order in electronic-type dielectrics." Nature Communications 12, no. 1 (2021). http://dx.doi.org/10.1038/s41467-021-20925-x.

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AbstractUltrafast electronic-phase change in solids by light, called photoinduced phase transition, is a central issue in the field of non-equilibrium quantum physics, which has been developed very recently. In most of those phenomena, charge or spin orders in an original phase are melted by photocarrier generations, while an ordered state is usually difficult to be created from a non-ordered state by a photoexcitation. Here, we demonstrate that a strong terahertz electric-field pulse changes a Mott insulator of an organic molecular compound in κ-(ET)2Cu[N(CN)2]Cl (ET = bis(ethylenedithio)tetr
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Dissertations / Theses on the topic "Macroscopically Ocupied Quantum State"

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Muniz, Sérgio Ricardo. "Desenvolvimento experimental para produção e estudo de gases quânticos: condensação de Bose-Einstein." Universidade de São Paulo, 2002. http://www.teses.usp.br/teses/disponiveis/76/76131/tde-11052005-144922/.

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Neste trabalho nós apresentamos detalhadamente todo o desenvolvimento experimental realizado em São Carlos para produção e estudo de gases quânticos, visando principalmente à produção do condensado de Bose-Einstein em átomos de Na-23. Para isso projetamos, construímos e integramos todo um complexo sistema experimental que reúne a maioria das técnicas desenvolvidas na área de átomos frios nas últimas décadas: desaceleração de feixes atômicos, aprisionamento magnético e magneto-óptico de átomos neutros, resfriamento sub-Doppler, resfriamento evaporativo induzido por radiofreqüência, manipulação
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