Multiparty multilevel energy-time entanglement

Details Multiparty multilevel energy-time entanglement Multiparty multilevel energy-time entanglement

2009-12-22

arxiv.org/abs/0912.4419v1

Phys. Rev. A 81, 032105 (2010)

Physics

Quantum Physics

7 pages, 7 figures

Scientific paper

10.1103/PhysRevA.81.032105

Franson-like setups are inadequate for multiparty Bell experiments with energy-time entanglement because postselected events can depend on the local settings, and local models can exploit this feature to reproduce the quantum predictions, even in the case of ideal devices. We extend a previously introduced interferometric scheme [A. Cabello, et al., Phys. Rev. Lett. 102, 040401 (2009)] to solve this problem in the n-qubit and n-qunit cases. In addition, the proposed setups allow us to prepare and test n-qubit Greenberger-Horne-Zeilinger and $(\sum_{i=1}^n |i ... i>)/\sqrt{n}$ energy-time entangled states.

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