Results 31 to 40 of about 199,986 (309)

Simplification of the Gram Matrix Eigenvalue Problem for Quadrature Amplitude Modulation Signals

open access: yesEntropy, 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
doaj   +1 more source

Fermionic coherent states

open access: yesJournal 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.
openaire   +3 more sources

Coherent absorption of N00N states [PDF]

open access: yesConference on Lasers and Electro-Optics, 2016
Recent results in deeply subwavelength thickness films demonstrated coherent control and logical gate operations with both classical and single photon light sources. However, quantum processing and devices typically involve more than one photon and non-trivial input quantum states.
Roger, Thomas   +7 more
openaire   +9 more sources

Coherent Control of Entanglement with Atomic Ensembles [PDF]

open access: yes, 2011
Quantum networks are composed of quantum nodes which coherently interact by way of quantum channels. They offer powerful capabilities for quantum computation, communication, and metrology. A generic requirement for these realizations is the capability to
Choi, Kyung Soo
core   +1 more source

Coherent state operators, giant gravitons, and gauge-gravity correspondence [PDF]

open access: yes, 2022
We generalize a construction of coherent state operators describing various giant graviton branes. We enlarge the coherent state parameters, by including complementary coherent state parameters, to describe a system of dual giants and giants.
Lin, Hai
core   +2 more sources

Special theory of relativity for a graded index fibre

open access: yesFrontiers 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
doaj   +1 more source

DYNAMICS OF GENERALIZED COHERENT STATES [PDF]

open access: yesModern Physics Letters B, 1995
We show that generalized coherent states follow Schrödinger dynamics in time-dependent potentials. The normalized wave-packets follow a classical evolution without spreading; in turn, the Schrödinger potential depends on the state through the classical trajectory.
DE MARTINO, Salvatore   +2 more
openaire   +3 more sources

Coherent State Path Integral for Linear Systems [PDF]

open access: yes, 2005
We present a computation of the coherent state path integral for a generic linear system using functional methods\u27\u27 (as opposed to discrete time approaches).
Torre, Charles G.
core   +2 more sources

Trajectory Coherent State And Coherent State For The Modified Caldirola-Kanai Oscillator [PDF]

open access: yes, 2013
We construct the Trajectory Coherent State (TCS) and Coherent state (CS) in the framework of the Modified Caldirola Kanai Hamiltonian. We also evaluate the minimum uncertainty relation.Keywords: Coherent state,modified caldirola-Kanai oscillator ...
Ikot, AN   +3 more
core   +1 more source

Dynamics of Entanglement in Jaynes–Cummings Nodes with Nonidentical Qubit-Field Coupling Strengths

open access: yesEntropy, 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
doaj   +1 more source

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