Comment on ‘‘Nonlocality of a single photon’’

J. Acácio de Barros, Gary Oas, Patrick Suppes

This paper has been withdrawn. A significantly revised version will be posted in the near future.

Aurélien Drezet

Tanumoy Pramanik, Satyabrata Adhikari, A. S. Majumdar +1 more

Tamoghna Das, Marcin Karczewski, Antonio Mandarino +3 more

We investigate the interferometric scheme put forward by Tan, Walls and Collett [Phys. Rev. Lett. {\bf 66}, 256 (1991)] that aims to reveal Bell non-classicality of a single photon. By providing a local hidden variable model that reproduces their results, we decisively refute this claim. In particular, this means that the scheme cannot be used in device-independent protocols.

Lucién Hardy

A proposal to demonstrate the nonlocality of a single photon is described. This is accomplished without using inequalities, and in a way that brings out a very curious feature of quantum mechanics. Unlike the first proposal to investigate the nonlocality of a single photon due to Tan, Walls, and Collett, this proposal does not require supplementary assumptions, and therefore rules out the whole class of local hidden variable interpretations.

Dipankar Home, G. S. Agarwal