Violation of Bell's inequality with quantum-dot single-photon sources

• URL: http://arxiv.org/abs/2109.14712v2
• Date: Wed, 4 May 2022 15:18:43 GMT
• Title: Violation of Bell's inequality with quantum-dot single-photon sources
• Authors: Eva M. Gonz\'alez-Ruiz, Sumanta K. Das, Peter Lodahl, Anders S. S{\o}rensen
• Abstract summary: We investigate the possibility of realizing a loophole-free violation of Bell's inequality using deterministic single-photon sources. We benchmark the performance requirements to state-of-the-art deterministic single-photon sources based on quantum dots in photonic nanostructures.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We investigate the possibility of realizing a loophole-free violation of Bell's inequality using deterministic single-photon sources. We provide a detailed analysis of a scheme to achieve such violations over long distances with immediate extensions to device-independent quantum key distribution. We investigate the effect of key experimental imperfections that are unavoidable in real-world single-photon sources including the finite degree of photon indistinguishability, single-photon purity, and the overall source efficiency. We benchmark the performance requirements to state-of-the-art deterministic single-photon sources based on quantum dots in photonic nanostructures and find that experimental realizations appear to be within reach. We also evaluate the requirements for a post-selected version of the protocol, which relaxes the demanding requirements with respect to the source efficiency.

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