Fidelity-based purity and coherence for quantum states-Reference-Cited by-同舟云学术

Fidelity-based purity and coherence for quantum states

Published:2022-06-23 Issue:06 Volume:20 Page:
ISSN:0219-7499
Container-title:International Journal of Quantum Information
language:en
Short-container-title:Int. J. Quantum Inform.

Author:

Indrajith V. S.¹^ORCID,Muthuganesan R.²³,Sankaranarayanan R.¹

Affiliation:

1. Department of Physics, National Institute of Technology, Tiruchirappalli 620015, Tamil Nadu, India

2. Centre for Nonlinear Science and Engineering, School of Electrical and Electronics Engineering, SASTRA Deemed University, Thanjavur 613401, Tamil Nadu, India

3. Department of Physics, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 115 19 Praha 1-Staré Mĕsto, Czech Republic

Abstract

Purity and coherence of a quantum state are recognized as useful resources for various information processing tasks. In this paper, we propose fidelity-based valid measure of purity and coherence monotone, and establish a relationship between them. This formulation of coherence is extended to quantum correlation relative to measurement. It is shown that under the measurement process, purity decreases and reaches a saturation.

Funder

Council of Scientific and Industrial Research, India

Publisher

World Scientific Pub Co Pte Ltd

Subject

Physics and Astronomy (miscellaneous)

Link

https://www.worldscientific.com/doi/pdf/10.1142/S0219749922500162

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