Quantum Effects in Communications Systems

  title={Quantum Effects in Communications Systems},
  author={James P. Gordon},
  journal={Proceedings of the IRE},
  • J. Gordon
  • Published 1 September 1962
  • Physics
  • Proceedings of the IRE
The information capacity of various communications systems is considered. Quantum effects are taken fully into account. The entropy of an electromagnetic wave having the quantum statistical properties of white noise in a single transmission mode is found, and from it the information efficiency of various possible systems may be derived. The receiving systems considered include amplifiers, heterodyne and homodyne converters and quantum counters. In the limit of high signal or noise power… 

Quantum electrodynamics of a communication channel

  • C. She
  • Physics
    IEEE Trans. Inf. Theory
  • 1968
A simple one-dimensional model is taken to illustrate the quantum effects of a narrowband communication system and it is shown that the noise of the channel, due to both thermal and quantum fluctuations, is additive and Gaussian.

Reliability of quantum-mechanical communication systems

  • J. Liu
  • Physics
    IEEE Trans. Inf. Theory
  • 1970
The performance of two special communication systems are evaluated and the optimum degree of diversity for an equal-strength diversity system is found numerically as a function of the average thermal-noise energy and information rate.

Quantum Limits on the Energy Consumption of Optical Transmission Systems

The search for schemes that minimize the energy associated with the transmission of information is a longstanding fundamental issue in communication theory. In this paper we extend fundamental limits

Quantum Limits in Optical Communications

This tutorial reviews the Holevo capacity limit as a universal tool to analyze the ultimate transmission rates in a variety of optical communication scenarios, ranging from conventional optically


It is the goal of quantum communication theory to establish fundamental limits on the performance and sensitivity of optical communication and signal processing systems as imposed by quantum effects,


Abstract : Attempt is made to establish an upper bound on the information capacity of an electromagnetic wave propagation circuit between two apertures when quantum effects come into play. We first

Wideband Quantum Communication: A New Frontier?

This paper considers channels in which information is encoded in a linear bosonic field, such as the electromagnetic field propagating in vacuum, and shows that there is a physically sensible upper limit on the channel capacity, imposed by quantum mechanics.

Quantum bounds on the information capacity of narrow-band free-space links without extraneous noise

An upper bound for the information rate in a communication link is set by the finite number of orthogonal states available to the electromagnetic field, is the link is subject to constraints on the

On the capacity of a noiseless photon channel

  • J. Bowen
  • Physics
    IEEE Trans. Inf. Theory
  • 1967
It is shown that for a noiseless channel with fixed average power but without any frequency restrictions, there exists an upper bound to channel capacity which is proportional to the square root of the average signal power.



Communication theory and physics

  • D. Gabor
  • Physics
    Trans. IRE Prof. Group Inf. Theory
  • 1953
It is shown in the second part of the paper that both descriptions are practically equivalent in the long-wave region, or for strong signals, as they contain approximately the same number of independent, distinguishable data, but the classical description is always a little less complete than the quantum description.

Some quantum effects in information channels

It is shown that this "photon channel" model leads to more realistic conclusions regarding information transmission, including the maximum entropy for a narrow-band source under an average power limitation and the transmission rate through a Poisson channel with additive Poisson noise.

Fluctuations in Amplification of Quanta with Application to Maser Amplifiers

Fluctuations in the amplification and absorption of waves by quantum processes are considered. Assuming for each quantum the probability (per unit time) a of producing another quantum, probability b

Quantum Fluctuations and Noise in Parametric Processes. I.

A quantum mechanical model for parametric interactions is used to evaluate the effect of the measuring (amplifying) process on the statistical properties of radiation. Parametric amplification is