Nonlocality in the presence of superselection rules

Frank Verstraete; N. Schuch; J. I. Cirac

doi:10.1117/12.548387

25 May 2004 Nonlocality in the presence of superselection rules

Frank Verstraete, N. Schuch, J. I. Cirac

Proceedings Volume 5468, Fluctuations and Noise in Photonics and Quantum Optics II; (2004) https://doi.org/10.1117/12.548387
Event: Second International Symposium on Fluctuations and Noise, 2004, Maspalomas, Gran Canaria Island, Spain

Abstract

Effective superselection rules severely alter the possible operations that can be implemented on a distributed quantum system. Superselection rules appear in e.g. the context of experiments with entangled cold gases: in this case all local operations have to conserve the local particle number. These superselection rules enforces us to reconsider the notion of nonlocality, as the new constraint implies limitations on the local operations that can be implemented. This gives rise to a novel form of nonlocality, and it is possible to associate a new nonlocal resource to it. In this paper we characterize this new resource, quantify it and discuss some applications.

Citation Download Citation

Frank Verstraete, N. Schuch, and J. I. Cirac "Nonlocality in the presence of superselection rules", Proc. SPIE 5468, Fluctuations and Noise in Photonics and Quantum Optics II, (25 May 2004); https://doi.org/10.1117/12.548387

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