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We have decided to discontinue the publication of preprints on our preprint server as of 1 March 2024. The publication culture within mathematics has changed so much due to the rise of repositories such as ArXiV (www.arxiv.org) that we are encouraging all institute members to make their preprints available there. An institute's repository in its previous form is, therefore, unnecessary. The preprints published to date will remain available here, but we will not add any new preprints here.

MiS Preprint
17/2018

Duality relation between coherence and path information in the presence of quantum memory

Kaifeng Bu, Lu Li, Junde Wu and Shao-Ming Fei

Abstract

The wave-particle duality demonstrates a competition relation between wave and particle behavior for a particle going through an interferometer. This duality can be formulated as an inequality, which upper bounds the sum of interference visibility and path information. However, if the particle is entangled with a quantum memory, then the bound may decrease. Here, we find the duality relation between coherence and path information for a particle going through a multipath interferometer in the presence of a quantum memory, offering an upper bound on the duality relation which is directly connected with the amount of entanglement between the particle and the quantum memory.

Received:
Feb 6, 2018
Published:
Feb 15, 2018

Related publications

inJournal
2018 Repository Open Access
Kaifeng Bu, Lu Li, Junde Wu and Shao-Ming Fei

Duality relation between coherence and path information in the presence of quantum memory

In: Journal of physics / A, 51 (2018) 8, p. 085304