Quantifying quantum coherence based on the Tsallis relative operator entropy

Autor:	Guo, Meng-Li, Jin, Zhi-Xiang, Li, Bo, Hu, Bin, Fei, Shao-Ming
Rok vydání:	2020
Předmět:	Quantum Physics
Zdroj:	Quantum Information Processing (2020) 19:382
Druh dokumentu:	Working Paper
DOI:	10.1007/s11128-020-02885-1
Popis:	Coherence is a fundamental ingredient in quantum physics and a key resource in quantum information processing. The quantification of quantum coherence is of great importance. We present a family of coherence quantifiers based on the Tsallis relative operator entropy. Shannon inequality and its reverse one in Hilbert space operators derived by Furuta [Linear Algebra Appl. 381 (2004) 219] are extended in terms of the parameter of the Tsallis relative operator entropy. These quantifiers are shown to satisfy all the standard criteria for a well-defined measure of coherence and include some existing coherence measures as special cases. Detailed examples are given to show the relations among the measures of quantum coherence. Comment: 10 pages, comments are welcome!
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2010.11707 Zobrazit plný text záznamu View this record from Arxiv