Cited by 145Quantum Information and CryptographyQuantum optics and atomic interactionsOrbital Angular Momentum in Optics

The Quantum Theory of Optical Communications

Open access
Shapiro, J.H.·2009·IEEE Journal of Selected Topics in Quantum Electronics

Abstract

Communication theory applied to lightwave channels is ordinarily carried out using the semiclassical theory of photodetection. Recent development of nonclassical light sources-whose photodetection statistics require the use of quantum theory-plus increasing interest in optics-based approaches to quantum information processing necessitates a thorough understanding of the similarities and distinctions between the semiclassical and quantum theories of optical communications. This paper is addressed to that need, focusing, for convenience, on the free-space communication channel using Gaussian states of light. The quantum version of the Huygens-Fresnel diffraction integral is reviewed, along with the semiclassical and quantum theories of direct, homodyne, and heterodyne detection. Maximally entangled Gaussian state light is used, in conjunction with quantum photodetection theory, to explain the nonclassical effects seen in Hong-Ou-Mandel interferometry and violation of the Clauser-Horne-Shimony-Holt form of Bell's inequality. The classical information capacities of several bosonic channels are reviewed, and shown to exceed what can be achieved using conventional optical receivers.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1109/jstqe.2009.2024959

Cites

92 of 92 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Employing QKD protocols is significant for enhancing security in underwater/aquatic scenarios.

    “In this regard, authors in [132] carried out the feasibility analysis of Quantum Key Distribution (QKD) protocols in the aquatic scenarios and showed the significance of employing QKD protocols in the underwater environment.”

    From Quantum Machine Learning for 6G Communication Networks: State-of-the-Art and Vision for the Future (2019) · cites this paper as [132]

    The introduction (section B) describes a tutorial on quantum optical communications focused on free-space propagation, and the conclusion likewise describes its emphasis as free-space propagation and photodetection. Searches for QKD, aquatic and underwater feasibility found no passage in our copy assessing QKD protocols or their security significance in underwater settings. (LLM, conf=0.77)

    Experimental — accuracy not yet measured

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 2

  1. L.-A. Wu, M. Xiao, and H. J. Kimble, "Squeezed states from an optical parametric amplifier," J. Opt. Soc. Amer. B, vol. 4, no. 10, pp. 1465-1475, Oct. 1987.
  2. J. H. Shapiro, S. Guha, and B. I. Erkmen, "Ultimate capacity of free-space optical communications," J. Opt. Netw., vol. 4, no. 8, pp. 501-516, Aug. 2005.

Cited by

Sorted by citations

Authors
Shapiro, J. H.
Affiliations
Massachusetts Institute of Technology (US)
Corresponding author
Shapiro, J.H.
Venue
IEEE Journal of Selected Topics in Quantum Electronics
Published
2009
Volume
15
Issue
6
Pages
1547-1569
ISSN
1077-260X (ISSN-L)
OpenAlex
W2133241337
Cited by
145
References
91
Citations by year
2026: 4 · 2025: 7 · 2024: 7 · 2023: 9 · 2022: 8 · 2021: 14 · 2020: 12 · 2019: 6 · 2018: 6 · 2017: 13 · 2016: 11 · 2015: 5 · 2014: 14 · 2013: 7 · 2012: 9
FWCI
7.94
Type
journal article
Language
en
Open access
Locations
  • IEEE Journal of Selected Topics in Quantum Electronics (publishedVersion)
  • DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion)
  • DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion, cc-by-nc)
Funders
  • W. M. Keck Foundation
  • Northwestern University
  • Defense Advanced Research Projects Agency
  • Office of Naval Research
Topics
  • Physical Sciences › Computer Science › Artificial Intelligence › Quantum Information and Cryptography
  • 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 › Orbital Angular Momentum in Optics
Keywords
optical quantum communication, Huygens-Fresnel diffraction, homodyne detection, heterodyne detection, direct detection, nonclassical light, Hong-Ou-Mandel interferometry, Bell inequality violation, bosonic channels, free-space optical communication, quantum information processing

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review