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Title: Optimized receiver design for entanglement-assisted communication using BPSK
The use of pre-shared entanglement in entanglement-assisted communication offers a superior alternative to classical communication, especially in the photon-starved regime and highly noisy environments. In this paper, we analyze the performance of several low-complexity receivers that use optical parametric amplifiers. The simulations demonstrate that receivers employing an entanglement-assisted scheme with phase-shift-keying modulation can outperform classical capacities. We present a 2x2 optical hybrid receiver for entanglement-assisted communication and show that it has a roughly 10% lower error probability compared to previously proposed optical parametric amplifier-based receivers for more than 10 modes. However, the capacity of the optical parametric amplifier-based receiver exceeds the Holevo capacity and the capacities of the optical phase conjugate receiver and 2x2 optical hybrid receiver in the case of a single mode. The numerical findings indicate that surpassing the Holevo and Homodyne capacities does not require a large number of signal-idler modes. Furthermore, we find that using unequal priors for BPSK provides roughly three times the information rate advantage over equal priors.  more » « less
Award ID(s):
2244365
PAR ID:
10536985
Author(s) / Creator(s):
;
Publisher / Repository:
Optica Publishing Group
Date Published:
Journal Name:
Optics Express
Volume:
31
Issue:
24
ISSN:
1094-4087
Page Range / eLocation ID:
39765
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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