Results 31 to 40 of about 18,349,524 (294)
Special theory of relativity for a graded index fibre
Frontiers in Physics, 2023 The speed of light (c) in a vacuum is independent of the choice of frames to describe the propagation, according to the theory of relativity. We consider how light is characterised in a material, where the speed of light is different from that in a ...
Shinichi Saito
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Coherent states and duality [PDF]
Physics Letters A, 2002 We formulate a relation between quantum-mechanical coherent states and complex-differentiable structures on the classical phase space ${\cal C}$ of a finite number of degrees of freedom. Locally-defined coherent states parametrised by the points of ${\cal C}$ exist when there is an almost complex structure on ${\cal C}$.
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Sequential state discrimination of coherent states [PDF]
Scientific Reports, 2018 AbstractSequential state discrimination is a strategy for quantum state discrimination of a sender’s quantum states when N receivers are separately located. In this report, we propose optical designs that can perform sequential state discrimination of two coherent states.
Namkung, Min, Kwon, Younghun
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Journal of Physics A: Mathematical and Theoretical, 2012 The aim of this paper is to give a self-contained and unified presentation of a fermionic coherent state theory with the necessary mathematical details, discussing their definition, properties and some applications. After defining Grassmann algebras, it is possible to get a classical analog for the fermionic degrees of freedom in a quantum system ...
Combescure, M., Robert, D.
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Dynamics of Entanglement in Jaynes–Cummings Nodes with Nonidentical Qubit-Field Coupling Strengths
Entropy, 2017 How to analytically deal with the general entanglement dynamics of separate Jaynes–Cummings nodes with continuous-variable fields is still an open question, and few analytical approaches can be used to solve their general entanglement dynamics ...
Li-Tuo Shen +3 more
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Quantum Information and Computation, 2015 The relative entropy measure quantifying coherence, a key property of quantum system, is proposed recently. In this note, we firstly investigate structural characterization of maximally coherent states with respect to the relative entropy measure. It is shown that mixed maximally coherent states do not exist and every pure maximally coherent state has ...
Zhaofang Bai, Shuan-ping Du
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Quantum Fluctuations in Vacuum Energy: Cosmic Inflation as a Dynamical Phase Transition
Universe, 2022 A variety of models of inflation in the early Universe have been proposed and applied to describe successfully the origin of all possible structures in the Universe.
Masahiro Morikawa
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Number state filtered coherent states
Quantum Information Processing, 2018 Number state filtering in coherent states leads to sub-Poissonian photon statistics. These states are more suitable for phase estimation when compared with the coherent states. Nonclassicality of these states is quantified in terms of the negativity of the Wigner function and the entanglement potential.
Nilakantha Meher, S. Sivakumar
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Characterizing Quantum Effects in Optically Induced Nanowire Self-Oscillations: Coherent Properties
Photonics, 2021 Mechanical properties of metallic-nanowire self-oscillations are investigated through a coherent-state analysis. We focus on elucidating the time behavior of quantum energy in such oscillations, in addition to the analysis of fluctuations, evolution of ...
Jeong Ryeol Choi
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PhotonicsWe investigate a lensless Airy-type optical beam generated by direct Fresnel propagation of a Gaussian apodized real space cubic phase. Starting from the scalar Fresnel diffraction integral, we derive a closed-form expression showing that the propagated ...
Justas Berškys +2 more
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