Non-Gaussian features from Excited Squeezed Vacuum State
| Autor: | Fang Gao, Xu-bing Tang, Feng Shuang, Yaoxiong Wang, Jian-guang Wu |
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| Rok vydání: | 2014 |
| Předmět: |
Physics
Quantum Physics Photon Vacuum state FOS: Physical sciences Atomic and Molecular Physics and Optics Quantum relative entropy Electronic Optical and Magnetic Materials Quantum state Quantum process Quantum electrodynamics Quantum mechanics Phase space Wigner distribution function Electrical and Electronic Engineering Physical and Theoretical Chemistry Quantum Physics (quant-ph) Squeezed coherent state |
| DOI: | 10.48550/arxiv.1410.4899 |
| Popis: | In this work, we introduce a non-Gaussian quantum state named excited squeezed vacuum state (ESVS), which can be ustilized to describe quantum light field emitted from the multiphoton quantum process occurred in some restricted quantum systems. We investigate its nonclassical properties such as Wigner distribution in phase space, photon number distribution, the second-order autocorrelation and the quadrature fluctuations. By virtue of the Hilbert-Schmidt distance method, we quantify the non-Gaussianity of the ESVS. Due to the similar photon statistics, we examine the fidelity between the ESVS and the photon-subtraction squeezed vacuum state (PSSVS), and then find the optimal fidelity by monitoring the relevant parameters. Comment: 17 pages, 5 figures |
| Databáze: | OpenAIRE |
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