On 'Schrödinger's cat' fringes

V.L. Gorshenin^a, b, B.N. Nougmanov^a, b, F.Ya. Khalili^†^b
^aMoscow Institute of Physics and Technology (National Research University), Institutskii per. 9, Dolgoprudny, Moscow Region, 141701, Russian Federation
^bInternational Center for Quantum Optics and Quantum Technologies (the Russian Quantum Center), Skolkovo Innovation Center, Bolshoi Boulevard, Building 30, Block 1, 3rd floor, sectors G3, G7, Moscow, Moscow Region, 121205, Russian Federation

Non-Gaussian quantum states whose Wigner functions can take negative values are important both for fundamental tests of quantum physics and for the quantum information technologies that have been under active development recently. A typical example of a non-Gaussian state is the so-called Schrödinger's cat state. Its very interesting feature is that its 'classical' part (two Gaussian maxima) is geometrically separated from the 'nonclassical' part (interference fringes). In this paper, several methodological issues related to these fringes are considered.

Keywords: Schrödinger's cat, Wigner functions, non-Gaussian states
PACS: 03.65.Ta, 03.65.Ud, 42.50.−p (all)
DOI: 10.3367/UFNe.2024.05.039686
URL: https://ufn.ru/en/articles/2024/9/i/
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2024PhyU...67..938G
Citation: Gorshenin V L, Nougmanov B N, Khalili F Ya "On 'Schrödinger's cat' fringes" Phys. Usp. 67 938–942 (2024)

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PT Journal Article
TI On 'Schrödinger's cat' fringes
AU Gorshenin V L
FAU Gorshenin VL
AU Nougmanov B N
FAU Nougmanov BN
AU Khalili F Ya
FAU Khalili FY
DP 10 Sep, 2024
TA Phys. Usp.
VI 67
IP 9
PG 938-942
RX 10.3367/UFNe.2024.05.039686
URL https://ufn.ru/en/articles/2024/9/i/
SO Phys. Usp. 2024 Sep 10;67(9):938-942

Received: 22nd, February 2024, revised: 25th, April 2024, accepted: 28th, May 2024

Оригинал: Горшенин В Л, Нугманов Б Н, Халили Ф Я «О полосах "кота Шрёдингера"» УФН 194 994–998 (2024); DOI: 10.3367/UFNr.2024.05.039686