On Entanglement Assisted Classical Optical Communications

Research output: Contribution to journalArticlepeer-review

Abstract

Entanglement assisted communication is advocated by numerous authors as an alternative to classical communication offering significant improvement in channel capacity, in particular in noisy regime. In all those papers it is always assumed that entanglement can be distributed without any imperfections, except for attenuation. We demonstrate that under imperfect pre-shared entanglement distribution, assuming that entanglement distribution channel is modeled as a noisy and lossy Bosonic channel, the entanglement assisted communication can be inferior compared to the classical communication, depending on the parameters of the distribution channel. We identify the conditions under which entanglement assistance can still provide an advantage over the classical case. In particular, when both communication and entanglement distribution channels are not used for entanglement assisted communication but rather for classical transmission instead then the classical capacity is always higher than the entanglement assisted capacity. We also study the entanglement assisted communication under the strong atmospheric turbulence effects.

Original languageEnglish (US)
Article number9380130
Pages (from-to)42604-42609
Number of pages6
JournalIEEE Access
Volume9
DOIs
StatePublished - 2021

Keywords

  • classical communication
  • entanglement
  • entanglement assisted capacity
  • Holevo capacity
  • Quantum communication
  • shannon capacity

ASJC Scopus subject areas

  • Computer Science(all)
  • Materials Science(all)
  • Engineering(all)

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