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Open Quantum Systems Decoherence

Optimizing positive maps in the matrix algebra Mn

arXiv
Authors: Anindita Bera, Gniewomir Sarbicki, Dariusz Chruściński

Year

2023

Paper ID

54760

Status

Preprint

Abstract Read

~2 min

Abstract Words

89

Citations

N/A

Abstract

We present an optimization procedure for a seminal class of positive maps τn,k in the algebra of n times n complex matrices introduced and studied by Tanahasi and Tomiyama, Ando, Nakamura and Osaka. Recently, these maps were proved to be optimal whenever the greatest common divisor GCD(n,k)=1. We attain a general conjecture how to optimize a map τn,k when GCD(n,k)=2 or 3. For GCD(n,k)=2, a series of analytical results are derived and for GCD(n,k)=3, we provide a suitable numerical analysis.

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  • We present an optimization procedure for a seminal class of positive maps τn,k in the algebra of n times n complex matrices introduced and studied by Tanahasi and Tomiyama...

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