LDPC-coded optical coherent state quantum communications

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The problem of communication using optical coherent quantum states, in the presence of background radiation, is considered. Two modulation formats are studied, ON-OFF keying (OOK) and M-ary pulse-position modulation (PPM). The bit-error-rate performance improvement due to low-density parity-check coding is reported. For OOK, it is assumed that the coherent state signal has a random phase. For an average number of noise photons N=0.1, the required number of signal photons per information bit is six in the case of coded quantum OOK. For the same level of noise (N=0.1) and assuming that signal phase is known, coded 16-ary PPM requires only 1.21 of signal photons per information bit.

Original languageEnglish (US)
Pages (from-to)2006-2008
Number of pages3
JournalIEEE Photonics Technology Letters
Volume19
Issue number24
DOIs
StatePublished - Dec 15 2007

Fingerprint

Quantum communication
quantum communication
keying
Pulse position modulation
Photons
pulse position modulation
photons
Optical communication
Bit error rate
background radiation
bit error rate
Modulation
format
optical communication
Radiation
parity
coding
modulation

Keywords

  • Coherent states
  • Low-density parity-check (LDPC) codes
  • Optical communications
  • Quantum receiver

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)

Cite this

LDPC-coded optical coherent state quantum communications. / Djordjevic, Ivan B.

In: IEEE Photonics Technology Letters, Vol. 19, No. 24, 15.12.2007, p. 2006-2008.

Research output: Contribution to journalArticle

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