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Quantum nature of a nonlinear beam splitter

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Lomonosov Moscow State University, Department of Physics, Leninskie Gory 1 build. 2, Moscow, 119991, Russian Federation

This is a review of a very interesting (in the authors' view) phenomenon, the operation of the light beam splitter. The beam splitter is a flat interface between two transparent dielectrics, at least one of which exhibits Kerr nonlinearity, i.e., its refractive index depends on the transmitted radiation intensity. Interestingly, quantum and classical theories make directly opposite predictions about the phase fluctuation of the output radiation of this device. In classical theory, the phases remain unchanged; in quantum theory, the phases fluctuate in accord with the amplitude-phase uncertainty relation. The origin of this difference is established at the fundamental level. A further remarkable point about this quantum paradox is that not only the source beam is split in two but one can also create conditions where the two split parts are respectively dominated by amplitude noise and phase noise, thus allowing the selection of photon fluctuations. Results of original studies are summarized and further developed.

Fulltext is available at IOP
PACS: 03.65.−w, 03.65.Sq, 42.65.−k (all)
DOI: 10.3367/UFNe.0184.201410i.1135
URL: https://ufn.ru/en/articles/2014/10/e/
Citation: Belinsky A V, Shulman M Kh "Quantum nature of a nonlinear beam splitter" Phys. Usp. 57 1022–1034 (2014)
BibTexBibNote ® (generic)BibNote ® (RIS) MedlineRefWorks
PT Journal Article
TI Quantum nature  of a nonlinear beam splitter
AU Belinsky A V
FAU Belinsky AV
AU Shulman M Kh
FAU Shulman MK
DP 10 Oct, 2014
TA Phys. Usp.
VI 57
IP 10
PG 1022-1034
RX 10.3367/UFNe.0184.201410i.1135
URL https://ufn.ru/en/articles/2014/10/e/
SO Phys. Usp. 2014 Oct 10;57(10):1022-1034

Received: 6th, March 2014, 28th, April 2014

Оригинал: Белинский А В, Шульман М Х «Квантовая специфика нелинейного светоделителя» УФН 184 1135–1148 (2014); DOI: 10.3367/UFNr.0184.201410i.1135

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