Published June 18, 2024 | Version v1
Journal article

Generalized physically incoherent operations

  • 1. College of Computer Science, Shaanxi Normal University, Xi'an 710062, China
  • 2. School of Mathematics and Statistics, Shaanxi Normal University, Xi'an 710062, China

Description

Quantum coherence is an intrinsic property within a single quantum system. Many different coherent resource theories have been proposed to characterize this property within the framework of resource theory. This difference is based on the difference in the identification of "free" operations. In this article, generalized physically incoherent operations, which are strictly contained in the intersection of incoherent operations and dephasing-covariant operations (dephasing-covariant incoherent incoherent operations), are introduced. We characterize the Kraus operators of dephasing-covariant incoherent incoherent operations and generalized physically incoherent operations, and further study the coherent state transformations under generalized physically incoherent operations. Specifically, we investigate the constraints imposed by the rank of the initial state on the extraction of a pure coherent state. Additionally, we present a sufficient condition for the transformation from a mixed state to a pure state ensemble.

Additional details

Identifiers

DOI
10.1103/PhysRevA.109.062424;
Crossref Funder ID
10.13039/501100001809;

Publishing Information

Journal Title
Physical Review A
Journal Volume
109
Journal Issue
6
Journal Page Range
14 pgs.
ISSN
1094-1622

Optional Information

Copyright
©2024 American Physical Society
Contract/Grant/Project number
12071271; 11671244; 62171266
Notes
Contact Email: liyongm@snnu.edu.cn; Record automatically processed
Funding organization
National Natural Science Foundation of China