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Cited by 95Quantum optics and atomic interactionsQuantum Information and CryptographyQuantum Mechanics and Applications

The DOI matches its Crossref record; 39 of the 39 references it cites were found in a registry or an index.

Nonclassical fields in a linear directional coupler

Lai, W. K., Buek, V., Knight, P. L.·1991·Physical Review A
DOI 10.1103/physreva.43.6323
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Abstract

In the present paper, we discuss the photon statistics of nonclassical fields in a linear directional coupler. We study the photon distributions at the output ports of the coupler for number-state inputs, as well as for arbitrary-state inputs. In particular, we show that when a number state enters one port of the coupler and the vacuum enters the other port, an SU(2) coherent state is generated at the output ports. If the same number state enters both ports of the coupler, the probability of finding an odd number of photons at either of the output ports vanishes for a particular choice of the coupler length. We show that if a number state enters port 1 and a strong coherent field enters port 2, the coupler can serve as a generator of displaced number states (in fact, in this case the coupler behaves essentially as a homodyne detector). We show that the coupler is equivalent to an imperfect photon detector with efficiency governed by the coupler parameters. We study the effect of dissipative losses within the coupler as well as the effect of scattering coupling in the coupler. The latter leads to equalization of the energy in each guide. We show that in the presence of scattering coupling, the coupler behaves neither like an imperfect photon detector nor a homodyne detector.

Overview

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Crossref · 10.1103/physreva.43.6323

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39 of 39 references verified0 citation errors · 0 not checkable

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Research works printed but not linked: 1

  1. H. P. Yuen, 1978, Proceedings of the Fourth Rochester Conference on Coherence and Quantum Optics

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Metadata

Authors
Lai, W. K., Buek, V., & Knight, P. L.
Affiliations
Imperial College London (GB)
ORCID
Venue
Physical Review A
Publisher
American Physical Society (APS)
Published
1991-06-01
Volume
43
Issue
11
Pages
6323-6336
ISSN
  • 0556-2791 (ISSN-L)
  • 1050-2947
  • 1094-1622
DOI
10.1103/physreva.43.6323
OpenAlex
W2038585702
Cited by
95
References
39
Citations by year
2025: 2 · 2024: 3 · 2023: 1 · 2022: 1 · 2021: 1 · 2020: 3 · 2019: 2 · 2018: 2 · 2017: 2 · 2016: 1 · 2014: 1 · 2013: 6 · 2012: 5
FWCI
2.98
Type
journal article
Language
en
Open access
closed
Licence
link.aps.org/licenses/aps-default-license (vor)
Locations
  • Physical Review A (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum optics and atomic interactions
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum Information and Cryptography
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum Mechanics and Applications
Keywords
photon statistics, SU(2) coherent states, displaced number states, homodyne detection, photon number distribution, dissipative losses

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