TY - JOUR
T1 - LDPC-coded M-ary PSK optical coherent state quantum communication
AU - Djordjevic, Ivan B.
N1 - Funding Information:
Manuscript received April 08, 2008; revised July 28, 2008. Current version published April 17, 2009. This work was supported in part by the National Science Foundation under Grant IHCS-0725405. The author is with Department of Electrical and Computer Engineering of University of Arizona, Tucson, AZ 85721 USA (e-mail: ivan@ece.arizona.edu). Digital Object Identifier 10.1109/JLT.2008.2004566
PY - 2009/3/1
Y1 - 2009/3/1
N2 - This paper addresses two important problems of interest for deep-space optical communications, quantum inter-chip/intra-chip optical communications and quantum-key distribution: 1) the problem of coded M-ary phase-shift keying optical coherent-state quantum communication in the absence of background radiation, and 2) the problem of coded binary coherent state communication in the presence of background radiation. In both cases large girth low-density parity-check (LDPC) codes are used as channel codes. With girth-10 LDPC-code of rate 0.8 and BPSK, the bit-error ratio of 10-8 can be achieved for average number of signal photons of 0.73, resulting in net-effective coding gain of 7.63 dB.
AB - This paper addresses two important problems of interest for deep-space optical communications, quantum inter-chip/intra-chip optical communications and quantum-key distribution: 1) the problem of coded M-ary phase-shift keying optical coherent-state quantum communication in the absence of background radiation, and 2) the problem of coded binary coherent state communication in the presence of background radiation. In both cases large girth low-density parity-check (LDPC) codes are used as channel codes. With girth-10 LDPC-code of rate 0.8 and BPSK, the bit-error ratio of 10-8 can be achieved for average number of signal photons of 0.73, resulting in net-effective coding gain of 7.63 dB.
KW - Coherent-state quantum communications
KW - Low-density parity-check (LDPC) codes
KW - M -ary phase-shift keying (PSK)
KW - On-off keying (OOK)
KW - Optical communications
KW - Quantum communications
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U2 - 10.1109/JLT.2008.2004566
DO - 10.1109/JLT.2008.2004566
M3 - Article
AN - SCOPUS:65649090223
SN - 0733-8724
VL - 27
SP - 494
EP - 499
JO - Journal of Lightwave Technology
JF - Journal of Lightwave Technology
IS - 5
ER -