Academic literature on the topic 'Wave guides. Quantum computers'

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Journal articles on the topic "Wave guides. Quantum computers"

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Banchi, Leonardo, Enrico Compagno, Vladimir Korepin, and Sougato Bose. "Quantum gates between distant qubits via spin-independent scattering." Quantum 1 (November 30, 2017): 36. http://dx.doi.org/10.22331/q-2017-11-30-36.

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We show how the spin independent scattering of two initially distant qubits, say, in distinct traps or in remote sites of a lattice, can be used to implement an entangling quantum gate between them. The scattering takes place under 1D confinement for which we consider two different scenarios: a 1D wave-guide and a tight-binding lattice. We consider models with contact-like interaction between two fermionic or two bosonic particles. A qubit is encoded in two distinct spins (or other internal) states of each particle. Our scheme enables the implementation of a gate between two qubits which are initially too far to interact directly, and provides an alternative to photonic mediators for the scaling of quantum computers. Fundamentally, an interesting feature is that "identical particles" (e.g., two atoms of the same species) and the 1D confinement, are both necessary for the action of the gate. Finally, we discuss the feasibility of our scheme, the degree of control required to initialize the wave-packets momenta, and show how the quality of the gate is affected by momentum distributions and initial distance. In a lattice, the control of quasi-momenta is naturally provided by few local edge impurities in the lattice potential.
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Arsen'ev, A. A. "Resonance scattering in quantum wave guides." Sbornik: Mathematics 194, no. 1 (February 28, 2003): 1–19. http://dx.doi.org/10.1070/sm2003v194n01abeh000703.

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Zagoskin, A. M. "d-Wave superconductors and quantum computers." Physica C: Superconductivity 368, no. 1-4 (March 2002): 305–9. http://dx.doi.org/10.1016/s0921-4534(01)01186-8.

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Maglione, Enrico, Lídia S. Ferreira, and Giorgio Cattapan. "Asymptotic properties of bound states in coupled quantum wave guides." Journal of Physics A: Mathematical and General 39, no. 5 (January 18, 2006): 1207–28. http://dx.doi.org/10.1088/0305-4470/39/5/013.

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Borri, P., W. Langbein, J. M. Hvam, F. Heinrichsdorff, M. H. Mao, and D. Bimberg. "Coherent versus incoherent dynamics in InAs quantum-dot active wave guides." Journal of Applied Physics 89, no. 11 (June 2001): 6542–44. http://dx.doi.org/10.1063/1.1367410.

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Post, Olaf. "Branched quantum wave guides with Dirichlet boundary conditions: the decoupling case." Journal of Physics A: Mathematical and General 38, no. 22 (May 18, 2005): 4917–31. http://dx.doi.org/10.1088/0305-4470/38/22/015.

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Sugisaki, Kenji, Shigeaki Nakazawa, Kazuo Toyota, Kazunobu Sato, Daisuke Shiomi, and Takeji Takui. "Quantum chemistry on quantum computers: quantum simulations of the time evolution of wave functions under the S2 operator and determination of the spin quantum number S." Physical Chemistry Chemical Physics 21, no. 28 (2019): 15356–61. http://dx.doi.org/10.1039/c9cp02546d.

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A quantum circuit to simulate time evolution of wave functions under an S2 operator is provided, and integrated it to the quantum phase estimation circuit to calculate the spin quantum number S of arbitrary wave functions on quantum computers.
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Wang, Yazhen, Shang Wu, and Jian Zou. "Quantum Annealing with Markov Chain Monte Carlo Simulations and D-Wave Quantum Computers." Statistical Science 31, no. 3 (August 2016): 362–98. http://dx.doi.org/10.1214/16-sts560.

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Barnes, C., B. L. Johnson, and G. Kirczenow. "Introducing directionality to Anderson localization: The transport properties of quantum railroads." Canadian Journal of Physics 72, no. 9-10 (September 1, 1994): 559–67. http://dx.doi.org/10.1139/p94-071.

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We present a study of the transport properties of a general class of quantum mechanical wave guides: quantum railroads (QRR). These wave guides are characterized by having adiabatic modes that carry current along the wave guide in opposite directions; for example N forward modes and M reverse modes. Anderson localization and the integer quantum Hall effect are characteristic of the disordered N = M and M = 0 cases, respectively. We consider the general case of arbitrary N and M, and show that it can be understood in terms of directed localization. Thus, we unify the theories of Anderson localization and the integer quantum Hall effect and demonstrate how they fit into a broader conceptual framework. We find that in any QRR there are always [Formula: see text] perfectly transmitted effective adiabatic modes with the remainder being subject to multiple scattering and interference effects characteristic of the N = M case.
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Sugisaki, Kenji, Shigeaki Nakazawa, Kazuo Toyota, Kazunobu Sato, Daisuke Shiomi, and Takeji Takui. "Quantum Chemistry on Quantum Computers: A Method for Preparation of Multiconfigurational Wave Functions on Quantum Computers without Performing Post-Hartree–Fock Calculations." ACS Central Science 5, no. 1 (December 31, 2018): 167–75. http://dx.doi.org/10.1021/acscentsci.8b00788.

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Dissertations / Theses on the topic "Wave guides. Quantum computers"

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Christandl, Katharina. "Advancing neutral atom quantum computing studies of one-dimensional and two-dimensional optical lattices on a chip /." Connect to resource, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1123263229.

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Thesis (Ph. D.)--Ohio State University, 2005.
Title from first page of PDF file. Document formatted into pages; contains xxiii, 261 p.; also includes graphics. Includes bibliographical references (p. 256-261). Available online via OhioLINK's ETD Center
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李德豪 and Tak-ho Alex Li. "Stripe quantum well waveguides using implantation induced optical confinement." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B31237381.

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Li, Tak-ho Alex. "Stripe quantum well waveguides using implantation induced optical confinement /." Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19145421.

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Wang, Chia-Jean. "Sub-diffraction quantum dot nanophotonic waveguides /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/5879.

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Na, Kyungsun. "Quantum transport in an electron waveguide /." Digital version accessible at:, 1999. http://wwwlib.umi.com/cr/utexas/main.

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Platt, Andrew. "Fano resonance in two-dimensional quantum wires with an offset attractive impurity." Virtual Press, 2004. http://liblink.bsu.edu/uhtbin/catkey/1294896.

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Our previous computational studies of two-dimensional quantum waveguide structures formed at the interface of the A1GaAs/GaAs heterostructure have focused on systems with centered attractive potential wells. From those studies we direct our attention to the quantum waveguide structures with an attractive potential well placed asymmetrically in the transverse direction. In particular, we are interested in the conductance spectrum for higher energy regimes where Fano resonances are the dominant resonance form. Of interest is the change and progression of Fano resonance peaks as a function of both the potentials' depth and offset, especially as it relates to the Breit-Wigner resonance forms observed in lower energy regimes. To accomplish this, the hard-wall models and Fortran code in our previous work have been expanded to include the asymmetrical positioning through solving the single-electron Schrodinger and associated equations used in the tight-binding Hamiltonian and recursive Green's functions. The observed Fano resonance structures are fitted to their characteristic equations through the use of zero-pole pairs.
Department of Physics and Astronomy
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Young, Christina Rachel. "FT-IRr and quantum cascade laser spectroscopy towards a hand-held trace gas sensor for benzene, toluene, and xylenes (BTX)." Atlanta, Ga. : Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/31702.

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Thesis (Ph.D)--Chemistry and Biochemistry, Georgia Institute of Technology, 2010.
Committee Chair: Boris Mizaikoff; Committee Member: Facundo Fernandez; Committee Member: Jiri Janata; Committee Member: Mark Disko; Committee Member: Oliver Brand; Committee Member: Thomas Orlando. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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Modoran, Andrei V. "Classical and quantum dynamics of atomic systems in the proximity of dielectric waveguides." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1164654528.

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Sundaram, Ganesh. "Wave-packet dynamics in slowly perturbed crystals : gradient corrections and Berry-phase effects /." Digital version accessible at:, 2000. http://wwwlib.umi.com/cr/utexas/main.

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Wu, Xiucheng. "A wavelength monitor based on electroabsorption in quantum well waveguide photodiodes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0032/NQ66247.pdf.

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Books on the topic "Wave guides. Quantum computers"

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Krivoshlykov, Sergej G. Quantum-theoretical formalism for inhomogeneous graded-index waveguides. Berlin: Akademie Verlag, 1994.

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Course of the International School of Quantum Electronics (35th 2002 Erice, Sicily). Free and guided optical beams: International School of Quantum Electronics, Erice Sicily, Italy, 20-27 November 2002. Edited by Martellucci S and Santarsiero Massimo. Singapore: World Scientific, 2004.

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Mihalache, D. Ghiduri de undă optice neliniare planare. București: Editura Academiei Române, 1990.

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I, Shimabukuro F., and SpringerLink (Online service), eds. The Essence of Dielectric Waveguides. Boston, MA: Springer Science+Business Media, LLC, 2008.

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T, Tamir, Griffel Giora, and Bertoni Henry L, eds. Guided-wave optoelectronics: Device characterization, analysis, and design. New York: Plenum Press, 1995.

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Weisshaar, Andreas. Generalized modal analysis of electromagnetic- and quantum-waveguide structures and discontinuities. 1991.

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Londergan, J. Timothy, David P. Murdock, and John P. Carini. Binding and Scattering in Two-Dimensional Systems: Applications to Quantum Wires, Waveguides and Photonic Crystals. Springer, 2013.

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Londergan, J. Timothy, David P. Murdock, and John P. Carini. Binding and Scattering in Two-Dimensional Systems: Applications to Quantum Wires, Waveguides and Photonic Crystals (Lecture Notes in Physics). Springer, 2000.

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Principles of Lasers and Optics. Cambridge University Press, 2005.

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Electronics, waveguides, computers and data processing: English-Dutch = Elektronica, golfgeleiders, computers en gegevensverwerking : Nederlands-Engels. Widnau, Switzerland: Schnellmann, 1995.

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Book chapters on the topic "Wave guides. Quantum computers"

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"Wave Guides and Resonators." In Electrodynamics: An Introduction Including Quantum Effects, 289–343. WORLD SCIENTIFIC, 2004. http://dx.doi.org/10.1142/9789812562159_0014.

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Raff, Lionel, Ranga Komanduri, Martin Hagan, and Satish Bukkapatnam. "Fitting Potential Energy Hypersurfaces." In Neural Networks in Chemical Reaction Dynamics. Oxford University Press, 2012. http://dx.doi.org/10.1093/oso/9780199765652.003.0005.

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Molecular dynamics (MD) and Monte Carlo (MC) simulations are the two most powerful methods for the investigation of dynamic behavior of atomic and molecular motions of complex systems. To date, such studies have been used to investigate chemical reaction mechanisms, energy transfer pathways, reaction rates, and product yields in a wide array of polyatomic systems. In addition, MD/MC methods have been successfully applied for the investigation of gas-surface reactions, diffusion on surfaces and in the bulk, membrane transport, and synthesis of diamond using chemical vapor deposition (CVD) techniques. The structure of vapor deposited rare gas matrices has been studied using trajectories procedures. If the chemical reaction of interest contains three atoms or fewer, various types of quantum and semiclassical calculations can be brought to bear on the problem. These methods include wave packet studies, close-coupling calculations at various levels of accuracy, and S-matrix theory. Several excellent review articles have been published describing the principal techniques and problems involved in conducting MD studies; the reader may wish to consult these as background material for this discussion. With the advent of relatively inexpensive, powerful personal computers, MD/MC simulations have become routine. Once the potential-energy hypersurface for the system has been obtained, the computations are straightforward, though time-consuming. In the majority of cases, the computational time required is on the order of hours to a few days. However, the accuracy of these simulations depends critically on the accuracy of the potential hypersurface used. The major problem associated with MD/MC investigations is the development of a potential-energy hypersurface whose topographical features are sufficiently close to those of the true, but unknown, surface that the results of the calculations are experimentally meaningful. Once the potential surface is chosen or computed, all the results from any quantum mechanical, semiclassical, or classical scattering or equilibrium calculation are determined. The only purpose of the MD calculations is to ascertain what these results are. Therefore, the most critical part of any MD/MC study is the development of the potential-energy hypersurface and the associated force field.
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Conference papers on the topic "Wave guides. Quantum computers"

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Ma, Liangkai, Alejandro Diaz, and Alan Haddow. "Modeling and Design of Materials for Controlled Wave Propagation in Plane Grid Structures." In ASME 2004 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/detc2004-57183.

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Formulations for the optimal design of plane grids with maximum band gaps are presented. Periodic band-gap structures prevent waves in certain frequency ranges from propagating. Materials or structures with band gaps have many applications, including frequency filters, vibration protection devices and wave guides. Here, a simple model of a periodic plane grid structure is presented and then an optimization problem is formulated where the structure’s band gap above a particular frequency is maximized by the selective addition of non-structural masses. Numerical implementation issues are discussed and examples are presented.
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Kime, Katherine A. "Solving for Quantum Controls." In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-48029.

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We study the use of a time-dependent potential barrier to control quantum wave packets, in a discretization of the Schroedinger equation. We consider computational issues in solving for a control which steers an initial single peak wave packet to a terminal double peak wave packet.
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Kartik, V., and J. A. Wickert. "Vibration and Guiding of Moving Media With Edge Weave Imperfections." In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-84502.

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This paper examines the steady-state forced vibration of a moving medium that is guided by a partial elastic foundation, and where geometric imperfections on the medium’s edge act as an excitation source. Such a system is of technical interest in the areas of web handling and magnetic tape transport where externally-pressurized air bearing guides are sometimes used to control lateral position. The axially-moving strip is modeled here as a string that is guided by elastic foundation segments and that is subjected to traveling wave excitation as the edge imperfections interact with the foundations. The equation of motion for this “moving medium and moving load” system incorporates a skew-symmetric Coriolis acceleration component that arises from convection. The governing equation is cast in the state-space form, with one symmetric and one skew-symmetric operator, as is characteristic of gyroscopic systems. Through modal analysis, the forced response of the system is obtained to the complex harmonic excitation associated with the interaction between the edge weave and the guides. Parameter studies are presented in the transport speed, foundation stiffness, guide placement, guide width, and imperfection wavelength. Of potential technological application, for a given wavelength of the edge imperfection, it is possible to reduce the medium’s vibration at a certain location by judiciously selecting the locations and spans of the foundation segments.
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Hasan, M. Arif, Yuli Starosvetsky, and Alexander F. Vakakis. "Nonlinear Targeted Energy Transfer in Granular Chains." In ASME 2012 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/detc2012-70569.

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One of the prime focuses in the design of highly adaptive granular material is in ability to passively control the flow of energy through it by means of trapping, redirection and scattering. In this study we demonstrate that one of the possible mechanisms to achieve efficient control over the propagating shock wave in the material is the usage of weakly interacting, non-compressed granular chains. In the latest computational studies we have demonstrated that the shock waves initially localized on a finite amount of chains can be efficiently redirected to the neighboring granular chains. In this work, we present an analytical and numerical approach to the concept of targeted energy transfer (TET) in granular media. We consider two weakly coupled granular chains which have on-site potential. This on-site potential arises if the granular chains are mounted on linear elastic foundation. We propose two different mechanisms for TET in granular media: (i) decouple the coupling, and (ii) stratification of the foundation. Each mechanism provides an efficient way of localization of energy in one of the two chains. For the second mechanism, one chain with varying parameter is excited by an initial impulse but coupled with another chain with constant parameter is initially at rest and we transform the governing equation of the granular chain system into two coupled oscillators and thus made an analogy between strongly nonlinear granular chain with the quantum Landau-Zener tunneling. The revealed phenomena open up the possibility of designing granular media as shock mitigators by efficiently redirecting the incoming energy to the neighboring granular chain, i.e. it gives a passive control over the incoming energy by redirecting among the granular networks.
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