On the Role of Locality in the Bose-Marletto-Vedral Effect

• URL: http://arxiv.org/abs/2411.01285v1
• Date: Sat, 02 Nov 2024 15:28:50 GMT
• Title: On the Role of Locality in the Bose-Marletto-Vedral Effect
• Authors: Giuseppe Di Pietra, Vlatko Vedral, Chiara Marletto,
• Abstract summary: Two of us recently proposed an entanglement-based witness of non-classicality. In this note we discuss the role of locality as an assumption for the theorem supporting the witness.
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• Abstract: Two of us recently proposed an entanglement-based witness of non-classicality, which can be applied to testing quantum effects in gravity in what is known as the Bose-Marletto-Vedral (BMV) effect. The witness is based on this idea: if a system can create entanglement between two quantum probes by local means only, then it must be non-classical. In this note we discuss the role of locality as an assumption for the theorem supporting the witness; we also discuss other related notions of locality and comment on their mutual relations.

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