Minimal disturbance discrimination of symmetric pure states on the Bloch sphere's equator

Shengli Zhang; Xubo Zou; Ke Li; Chenhui Jin; Guangcan Guo

doi:10.1103/PhysRevA.77.044302

Minimal disturbance discrimination of symmetric pure states on the Bloch sphere's equator

Shengli Zhang^*
, Xubo Zou
, Ke Li
, Chenhui Jin
, Guangcan Guo

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

This paper addresses the minimal disturbance quantum discrimination among a set of N pure states which are symmetrically distributed on a Bloch sphere equator. The optimal trade-off between the discrimination probability and the state disturbance is exactly derived. The minimal disturbance discrimination which saturates the trade-off turns out to be a convex combination of the minimum error discrimination and the identity maps.

Original language	English
Article number	044302
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	77
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevA.77.044302
Publication status	Published - 21 Apr 2008
Externally published	Yes

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abstract = "This paper addresses the minimal disturbance quantum discrimination among a set of N pure states which are symmetrically distributed on a Bloch sphere equator. The optimal trade-off between the discrimination probability and the state disturbance is exactly derived. The minimal disturbance discrimination which saturates the trade-off turns out to be a convex combination of the minimum error discrimination and the identity maps.",

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AU - Jin, Chenhui

AU - Guo, Guangcan

PY - 2008/4/21

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AB - This paper addresses the minimal disturbance quantum discrimination among a set of N pure states which are symmetrically distributed on a Bloch sphere equator. The optimal trade-off between the discrimination probability and the state disturbance is exactly derived. The minimal disturbance discrimination which saturates the trade-off turns out to be a convex combination of the minimum error discrimination and the identity maps.

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DO - 10.1103/PhysRevA.77.044302

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Minimal disturbance discrimination of symmetric pure states on the Bloch sphere's equator

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