Discrimination and decoherence of Schrodinger cat states in lossy quantum channels

被引：2

作者：

Goncharov, R. K. ^{[1
,2
]}

Kiselev, A. D. ^{[1
,2
]}

Veselkova, N. G. ^{[1
]}

Ali, Ranim ^{[3
]}

Kiselev, F. D. ^{[1
,2
]}

机构：

[1] ITMO Univ, Quantum Informat Lab, Kadetskaya Line 3, St Petersburg 199034, Russia

[2] ITMO Univ, Lab Quantum Proc & Measurements, Kadetskaya Line 3, St Petersburg 199034, Russia

[3] ITMO Univ, Fac Photon, Kronverksky Pr 49,Bldg A, St Petersburg 197101, Russia

来源：

NANOSYSTEMS-PHYSICS CHEMISTRY MATHEMATICS | 2021年 / 12卷 / 06期

关键词：

Schrodinger cat states; decoherence; quantum state discrimination; SUPERPOSITIONS;

D O I：

10.17586/2220-8054-2021-12-6-697-702

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We investigate environment induced effects of decoherence in discrimination between the Schrodinger cat states transmitted through noisy quantum channels such as optical fibers. We calculate the fidelity and the statistics of photocounts for both even and odd coherent states. The method that uses the beam splitter-like transformation acting in the enlarged Hilbert space to model the quantum channel is compared with the approach based on the Lindblad dynamics of one-mode bosonic systems.

引用

页码：697 / 702

页数：6

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