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Title: Invariance of the bit error rate in the ancilla-assisted homodyne detection

Abstract

We investigate the minimum achievable bit error rate of the discrimination of binary coherent states with the help of arbitrary ancillary states. We adopt homodyne measurement with a common phase of the local oscillator and classical feedforward control. After one ancillary state is measured, its outcome is referred to the preparation of the next ancillary state and the tuning of the next mixing with the signal. It is shown that the minimum bit error rate of the system is invariant under the following operations: feedforward control, deformations, and introduction of any ancillary state. We also discuss the possible generalization of the homodyne detection scheme.

Authors:
; ;  [1]
  1. Quantum Information Technology Group, National Institute of Information and Communications Technology, 4-2-1 Nukui-kitamachi, Koganei, Tokyo 184-8795 (Japan)
Publication Date:
OSTI Identifier:
21528582
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 82; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevA.82.052303; (c) 2010 The American Physical Society; Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 97 MATHEMATICAL METHODS AND COMPUTING; ANNIHILATION OPERATORS; CONTROL; DETECTION; EIGENSTATES; OSCILLATORS; SIGNALS; TUNING; ELECTRONIC EQUIPMENT; EQUIPMENT; MATHEMATICAL OPERATORS; QUANTUM OPERATORS

Citation Formats

Yoshida, Yuhsuke, Takeoka, Masahiro, and Sasaki, Masahide. Invariance of the bit error rate in the ancilla-assisted homodyne detection. United States: N. p., 2010. Web. doi:10.1103/PHYSREVA.82.052303.
Yoshida, Yuhsuke, Takeoka, Masahiro, & Sasaki, Masahide. Invariance of the bit error rate in the ancilla-assisted homodyne detection. United States. https://doi.org/10.1103/PHYSREVA.82.052303
Yoshida, Yuhsuke, Takeoka, Masahiro, and Sasaki, Masahide. 2010. "Invariance of the bit error rate in the ancilla-assisted homodyne detection". United States. https://doi.org/10.1103/PHYSREVA.82.052303.
@article{osti_21528582,
title = {Invariance of the bit error rate in the ancilla-assisted homodyne detection},
author = {Yoshida, Yuhsuke and Takeoka, Masahiro and Sasaki, Masahide},
abstractNote = {We investigate the minimum achievable bit error rate of the discrimination of binary coherent states with the help of arbitrary ancillary states. We adopt homodyne measurement with a common phase of the local oscillator and classical feedforward control. After one ancillary state is measured, its outcome is referred to the preparation of the next ancillary state and the tuning of the next mixing with the signal. It is shown that the minimum bit error rate of the system is invariant under the following operations: feedforward control, deformations, and introduction of any ancillary state. We also discuss the possible generalization of the homodyne detection scheme.},
doi = {10.1103/PHYSREVA.82.052303},
url = {https://www.osti.gov/biblio/21528582}, journal = {Physical Review. A},
issn = {1050-2947},
number = 5,
volume = 82,
place = {United States},
year = {Mon Nov 15 00:00:00 EST 2010},
month = {Mon Nov 15 00:00:00 EST 2010}
}