Zobrazeno 1 - 10
of 642
pro vyhledávání: '"Gaussian states"'
Autor:
T. J. Volkoff, Changhyun Ryu
Publikováno v:
Frontiers in Physics, Vol 12 (2024)
Parity or quadratic spin (e.g., Jz2) readouts of a Mach–Zehnder (MZ) interferometer probed with a twin Fock (TF) input state allow saturating the optimal sensitivity attainable among all mode-separable states with a fixed total number of particles
Externí odkaz:
https://doaj.org/article/f6af425785784c338616f0437da58e2c
Publikováno v:
Results in Physics, Vol 58, Iss , Pp 107466- (2024)
We propose a quantification CνGn of n-mode Gaussian coherence. The value of CνGn only depends on the covariance matrices and displacement vectors of continuous-variable states without any optimization procedures, and thus is easily calculated. For
Externí odkaz:
https://doaj.org/article/58ded7e01cdc47a09f8094444a23be3c
Autor:
Bertlmann, Reinhold A., author, Friis, Nicolai, author
Publikováno v:
Modern Quantum Theory : From Quantum Mechanics to Entanglement and Quantum Information, 2023, ill.
Externí odkaz:
https://doi.org/10.1093/oso/9780199683338.003.0025
Publikováno v:
Quantum Reports, Vol 4, Iss 4, Pp 509-522 (2022)
In this paper, we numerically study the coordinate wave functions and the Wigner functions of the coherent phase states (CPS), paying particular attention to their differences from the standard (Klauder–Glauber–Sudarshan) coherent states, especia
Externí odkaz:
https://doaj.org/article/fe0d76280821448ead5160abd85761a2
Publikováno v:
New Journal of Physics, Vol 26, Iss 7, p 073022 (2024)
Quantum optical metrology aims to identify ultimate sensitivity bounds for the estimation of parameters encoded into quantum states of the electromagnetic field. In many practical applications, including imaging, microscopy, and remote sensing, the p
Externí odkaz:
https://doaj.org/article/69729fae8a7042ecae2c02eb75acd6dc
Autor:
Zhaofang Bai, Shuanping Du
Publikováno v:
Journal of Physics Communications, Vol 8, Iss 2, p 025006 (2024)
Generating a long-distance quantum state with genuine quantum correlation (GQC) is one of the most essential functions of quantum networks to support quantum communication. Here, we provide a deterministic scheme for generating multimode Gaussian sta
Externí odkaz:
https://doaj.org/article/130eb975ca8f4883b8514e1be87eb99e
Publikováno v:
Comptes Rendus. Physique, Vol 23, Iss G1, Pp 1-26 (2022)
In an ensemble of two-level atoms that can be described in terms of a collective spin, entangled states can be used to enhance the sensitivity of interferometric precision measurements. While non-Gaussian spin states can produce larger quantum enhanc
Externí odkaz:
https://doaj.org/article/fbef74ab6aaf4f14a37ac3e0cad292c8
Akademický článek
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Publikováno v:
Results in Physics, Vol 39, Iss , Pp 105700- (2022)
The analytical formula for the fidelity of teleportation from Alice to Bob of a thermal state used as an input state is derived using the characteristic function approach. As a resource state it is used a continuous-variable two-mode bosonic state sh
Externí odkaz:
https://doaj.org/article/6b78de6de650497cb2602c108b029d13
Akademický článek
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