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Title: Unambiguous quantum-state filtering

Abstract

In this paper, we consider a generalized measurement where one particular quantum signal is unambiguously extracted from a set of noncommutative quantum signals and the other signals are filtered out. Simple expressions for the maximum detection probability and its positive operator valued measure are derived. We apply such unambiguous quantum state filtering to evaluation of the sensing of decoherence channels. The bounds of the precision limit for a given quantum state of probes and possible device implementations are discussed.

Authors:
;  [1];  [2];  [3]
  1. Communications Research Laboratory, Koganei, Tokyo 184-8795, (Japan)
  2. (Japan)
  3. Advanced Research Laboratory, Hitachi Ltd., Hatoyama, Saitama 350-03, (Japan)
Publication Date:
OSTI Identifier:
20639873
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 68; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevA.68.012307; (c) 2003 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ACCURACY; COMMUTATION RELATIONS; CORRELATIONS; DETECTION; ENERGY LEVELS; EVALUATION; IMPLEMENTATION; INFORMATION THEORY; PROBABILITY; QUANTUM MECHANICS; SIGNALS

Citation Formats

Takeoka, Masahiro, Sasaki, Masahide, CREST, Japan Science and Technology Corporation, Tokyo,, and Ban, Masashi. Unambiguous quantum-state filtering. United States: N. p., 2003. Web. doi:10.1103/PhysRevA.68.012307.
Takeoka, Masahiro, Sasaki, Masahide, CREST, Japan Science and Technology Corporation, Tokyo,, & Ban, Masashi. Unambiguous quantum-state filtering. United States. doi:10.1103/PhysRevA.68.012307.
Takeoka, Masahiro, Sasaki, Masahide, CREST, Japan Science and Technology Corporation, Tokyo,, and Ban, Masashi. Tue . "Unambiguous quantum-state filtering". United States. doi:10.1103/PhysRevA.68.012307.
@article{osti_20639873,
title = {Unambiguous quantum-state filtering},
author = {Takeoka, Masahiro and Sasaki, Masahide and CREST, Japan Science and Technology Corporation, Tokyo, and Ban, Masashi},
abstractNote = {In this paper, we consider a generalized measurement where one particular quantum signal is unambiguously extracted from a set of noncommutative quantum signals and the other signals are filtered out. Simple expressions for the maximum detection probability and its positive operator valued measure are derived. We apply such unambiguous quantum state filtering to evaluation of the sensing of decoherence channels. The bounds of the precision limit for a given quantum state of probes and possible device implementations are discussed.},
doi = {10.1103/PhysRevA.68.012307},
journal = {Physical Review. A},
number = 1,
volume = 68,
place = {United States},
year = {Tue Jul 01 00:00:00 EDT 2003},
month = {Tue Jul 01 00:00:00 EDT 2003}
}