Explicit receivers for pure-interference bosonic multiple access channels

Mark M. Wilde, Saikat Guha

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

The pure-interference bosonic multiple access channel has two senders and one receiver, such that the senders each communicate with multiple temporal modes of a single spatial mode of light. The channel mixes the input modes from the two users pairwise on a lossless beamsplitter, and the receiver has access to one of the two output ports. In prior work, Yen and Shapiro found the capacity region of this channel if encodings consist of coherent-state preparations. Here, we demonstrate how to achieve the coherent-state Yen-Shapiro region (for a range of parameters) using a sequential decoding strategy, and we show that our strategy outperforms the rate regions achievable using conventional receivers. Our receiver performs binary-outcome quantum measurements for every codeword pair in the senders' codebooks. A crucial component of this scheme is a non-destructive "vacuum-or-not" measurement that projects an n-symbol modulated codeword onto the n-fold vacuum state or its orthogonal complement, such that the post-measurement state is either the n-fold vacuum or has the vacuum removed from the support of the n symbols' joint quantum state. This receiver requires the additional ability to perform multimode optical phase-space displacements which are realizable using a beamsplitter and a laser.

Original languageEnglish (US)
Title of host publication2012 International Symposium on Information Theory and Its Applications, ISITA 2012
Pages303-307
Number of pages5
StatePublished - Dec 1 2012
Externally publishedYes
Event2012 International Symposium on Information Theory and Its Applications, ISITA 2012 - Honolulu, HI, United States
Duration: Oct 28 2012Oct 31 2012

Publication series

Name2012 International Symposium on Information Theory and Its Applications, ISITA 2012

Conference

Conference2012 International Symposium on Information Theory and Its Applications, ISITA 2012
CountryUnited States
CityHonolulu, HI
Period10/28/1210/31/12

Fingerprint

Multiple access interference
Vacuum
Decoding
Lasers

ASJC Scopus subject areas

  • Computer Science Applications
  • Information Systems

Cite this

Wilde, M. M., & Guha, S. (2012). Explicit receivers for pure-interference bosonic multiple access channels. In 2012 International Symposium on Information Theory and Its Applications, ISITA 2012 (pp. 303-307). [6400941] (2012 International Symposium on Information Theory and Its Applications, ISITA 2012).

Explicit receivers for pure-interference bosonic multiple access channels. / Wilde, Mark M.; Guha, Saikat.

2012 International Symposium on Information Theory and Its Applications, ISITA 2012. 2012. p. 303-307 6400941 (2012 International Symposium on Information Theory and Its Applications, ISITA 2012).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Wilde, MM & Guha, S 2012, Explicit receivers for pure-interference bosonic multiple access channels. in 2012 International Symposium on Information Theory and Its Applications, ISITA 2012., 6400941, 2012 International Symposium on Information Theory and Its Applications, ISITA 2012, pp. 303-307, 2012 International Symposium on Information Theory and Its Applications, ISITA 2012, Honolulu, HI, United States, 10/28/12.
Wilde MM, Guha S. Explicit receivers for pure-interference bosonic multiple access channels. In 2012 International Symposium on Information Theory and Its Applications, ISITA 2012. 2012. p. 303-307. 6400941. (2012 International Symposium on Information Theory and Its Applications, ISITA 2012).
Wilde, Mark M. ; Guha, Saikat. / Explicit receivers for pure-interference bosonic multiple access channels. 2012 International Symposium on Information Theory and Its Applications, ISITA 2012. 2012. pp. 303-307 (2012 International Symposium on Information Theory and Its Applications, ISITA 2012).
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