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Soft iterative quantum receivers approaching the Helstrom limit using realistic quantum devices

Soft iterative quantum receivers approaching the Helstrom limit using realistic quantum devices
Soft iterative quantum receivers approaching the Helstrom limit using realistic quantum devices
One of the most crucial challenges in quantum communication is the discrimination of the non-orthogonal coherent states approaching the Helstrom limit. In this paper, a soft iterative quantum receiver is derived for discriminating among the coherent states. The receivers employing the iterative strategy for optimizing the feedback measurement are capable of operating closer to the theoretical error probability limit, actuating about 1.05dB improvement over a recent proposed quantum receiver. The iterative quantum receivers achieve excellent performance despite using a reduced number of feedback measurement steps. Monte Carlo simulations are performed for quantifying the influence of practical quantum-domain impairments. These results suggest that iterative detection offers substantial robustness against many imperfections degrading realistic experimental implementation.
2169-3536
Wei, Chenjia
2f21b4f1-f10a-4708-9fcc-f5e6865a976a
Zhou, Xiaolin
430d63af-54f0-48d7-8f26-97dcf393fb57
Wang, Lingda
ac7b4d03-e1bf-4c8a-94e1-7fa7493404a2
Tian, Pengfei
1df619ca-2c71-40e2-85bb-1d9a7bc3f5f2
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Wei, Chenjia
2f21b4f1-f10a-4708-9fcc-f5e6865a976a
Zhou, Xiaolin
430d63af-54f0-48d7-8f26-97dcf393fb57
Wang, Lingda
ac7b4d03-e1bf-4c8a-94e1-7fa7493404a2
Tian, Pengfei
1df619ca-2c71-40e2-85bb-1d9a7bc3f5f2
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Wei, Chenjia, Zhou, Xiaolin, Wang, Lingda, Tian, Pengfei and Hanzo, Lajos (2018) Soft iterative quantum receivers approaching the Helstrom limit using realistic quantum devices. IEEE Access. (doi:10.1109/ACCESS.2018.2802447).

Record type: Article

Abstract

One of the most crucial challenges in quantum communication is the discrimination of the non-orthogonal coherent states approaching the Helstrom limit. In this paper, a soft iterative quantum receiver is derived for discriminating among the coherent states. The receivers employing the iterative strategy for optimizing the feedback measurement are capable of operating closer to the theoretical error probability limit, actuating about 1.05dB improvement over a recent proposed quantum receiver. The iterative quantum receivers achieve excellent performance despite using a reduced number of feedback measurement steps. Monte Carlo simulations are performed for quantifying the influence of practical quantum-domain impairments. These results suggest that iterative detection offers substantial robustness against many imperfections degrading realistic experimental implementation.

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Accepted/In Press date: 26 January 2018
e-pub ahead of print date: 5 February 2018

Identifiers

Local EPrints ID: 417725
URI: http://eprints.soton.ac.uk/id/eprint/417725
ISSN: 2169-3536
PURE UUID: 1e41f7a1-46db-4762-bac4-c7baaf492e4b
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

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Date deposited: 12 Feb 2018 17:30
Last modified: 07 Oct 2020 01:33

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