SU(2) symmetry of coherent photons and application to Poincaré rotator
Frontiers in Physics, 2023 Lie algebra is a hidden mathematical structure behind various quantum systems realised in nature. Here, we consider SU(2) wavefunctions for polarisation states of coherent photons emitted from a laser source, and discuss the relationship to spin ...
Shinichi Saito
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Heterogeneity in M. tuberculosis β-lactamase inhibition by Sulbactam
Nature Communications, 2023 For decades, researchers have elucidated essential enzymatic functions on the atomic length scale by tracing atomic positions in real-time. Our work builds on possibilities unleashed by mix-and-inject serial crystallography (MISC) at X-ray free electron ...
Tek Narsingh Malla +28 more
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Spin and orbital angular momentum of coherent photons in a waveguide
Frontiers in Physics, 2023 Spin angular momentum of a photon corresponds to a polarisation degree of freedom of lights, and such that various polarisation properties are coming from macroscopic manifestation of quantum-mechanical properties of lights.
Shinichi Saito
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Simplification of the Gram Matrix Eigenvalue Problem for Quadrature Amplitude Modulation Signals
Entropy, 2022 In quantum information science, it is very important to solve the eigenvalue problem of the Gram matrix for quantum signals. This allows various quantities to be calculated, such as the error probability, mutual information, channel capacity, and the ...
Ryusuke Miyazaki +2 more
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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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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 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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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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Entangled Coherent States in Teleportation
East European Journal of Physics, 2022 In the present paper, we will review the methods to produce superposition of entangled coherent state using polarizing beam splitter and Kerr non linearity.
Shivani A. Kumar +2 more
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Coherent State Control to Recover Quantum Entanglement and Coherence [PDF]
Entropy (Basel), 2019 How to analytically deal with the entanglement and coherence dynamics of separated Jaynes−Cummings nodes with continuous-variable fields is still an open question. We here generalize this model to a more common situation including either a small or
Li-Tuo Shen +2 more
europepmc +2 more sources