Quantum instrumentality uniquely singles out nonlocal advantage of quantum coherence

Debasis Mondal, Jaskaran Singh, and Dagomir Kaszlikowski

Phys. Rev. A 104, 042407 – Published 6 October 2021

Abstract

Recently, it was shown that quantum steerability is stronger than the bound set by the instrumental causal network. This implies that quantum instrumentality cannot simulate Einstein-Podolsky-Rosen (EPR) -nonlocal correlations completely. Here we show that quantum instrumentality uniquely and completely singles out the nonlocal advantage of quantum coherence, unlike EPR correlation.

Received 4 May 2021
Accepted 14 September 2021

DOI:https://doi.org/10.1103/PhysRevA.104.042407

Physics Subject Headings (PhySH)

Nonlocality

Quantum Information, Science & Technology

Authors & Affiliations

Debasis Mondal ^1,*, Jaskaran Singh^2,†, and Dagomir Kaszlikowski^1,3,‡

¹Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, 117543 Singapore, Singapore
²Department of Physical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81 SAS Nagar, Manauli PO 140306 Punjab, India
³Department of Physics, National University of Singapore, 2 Science Drive 3, 117542 Singapore, Singapore

^*cqtdem@nus.edu.sg
^†jaskaransinghnirankari@iisermohali.ac.in
^‡phykd@nus.edu.sg

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 104, Iss. 4 — October 2021

Reuse & Permissions

Access Options

Author publication services for translation and copyediting assistance advertisement

Physical Review A

covering atomic, molecular, and optical physics and quantum information