TY - GEN
T1 - Quantum detection of wavelength division multiplexing optical coherent signals in lossy channels
AU - Waseda, Atsushi
AU - Sasaki, Masahide
AU - Takeoka, Masahiro
AU - Fujiwara, Mikio
AU - Toyoshima, Morio
AU - Tanaka, Hidema
PY - 2010
Y1 - 2010
N2 - We numerically evaluate the wavelength division multiplexing (WDM) data transmission of coherent phase-shift keying (PSK) and quadrature amplitude modulation (QAM) signals in optical fiber communication and deep-space communication channels with conventional homodyne-based (dyne-type) detections and various quantum detection strategies. We show the quantitative gap between these detection strategies and especially in the quantum-limited region where the quantum noise seriously limits the transmission rate. For an extremely weak signal input power, there is a crucial gap between the capacity limit and the transmission rates of the WDM system with dyne-type detections. We show that this gap is filled by applying a collective square root detection (SRD) only for each channel, not necessary for quantum collective decoding among WDM channels.
AB - We numerically evaluate the wavelength division multiplexing (WDM) data transmission of coherent phase-shift keying (PSK) and quadrature amplitude modulation (QAM) signals in optical fiber communication and deep-space communication channels with conventional homodyne-based (dyne-type) detections and various quantum detection strategies. We show the quantitative gap between these detection strategies and especially in the quantum-limited region where the quantum noise seriously limits the transmission rate. For an extremely weak signal input power, there is a crucial gap between the capacity limit and the transmission rates of the WDM system with dyne-type detections. We show that this gap is filled by applying a collective square root detection (SRD) only for each channel, not necessary for quantum collective decoding among WDM channels.
KW - Deep space communication
KW - Optical fiber communication
KW - PSK
KW - QAM
KW - Quatnum detection theory
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U2 - 10.1109/ARES.2010.56
DO - 10.1109/ARES.2010.56
M3 - Conference contribution
AN - SCOPUS:77952414607
SN - 9780769539652
T3 - ARES 2010 - 5th International Conference on Availability, Reliability, and Security
SP - 619
EP - 624
BT - ARES 2010 - 5th International Conference on Availability, Reliability, and Security
T2 - 5th International Conference on Availability, Reliability, and Security, ARES 2010
Y2 - 15 February 2010 through 18 February 2010
ER -