On the role of entanglement in two-photon metrology

Stefanov, André (2017). On the role of entanglement in two-photon metrology. Quantum science and technology, 2(2), 025004. IOP Publishing 10.1088/2058-9565/aa6ae1

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The role of entanglement in metrology with photon pairs is investigated. We consider the situations where either one photon only interacts with a probe, or where both photons interact with two independent systems. Based on arguments from quantum information theory, we show that the presence of entanglement in the state cannot lead to results, which could not be obtained with separable states. This shows that entanglement can only provide advantages when genuine two-photon interactions are present.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Applied Physics

UniBE Contributor:

Stefanov, André

Subjects:

600 Technology > 620 Engineering
500 Science > 530 Physics

ISSN:

2058-9565

Publisher:

IOP Publishing

Language:

English

Submitter:

Franziska Stämpfli

Date Deposited:

15 Jun 2018 10:06

Last Modified:

24 Oct 2019 18:18

Publisher DOI:

10.1088/2058-9565/aa6ae1

BORIS DOI:

10.7892/boris.114718

URI:

https://boris.unibe.ch/id/eprint/114718

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