A Mach-Zehnder Interferometer for a Two-Photon Wave Packet

Details A Mach-Zehnder Interferometer for a Two-Photon Wave Packet A Mach-Zehnder Interferometer for a Two-Photon Wave Packet

2000-10-05

arxiv.org/abs/quant-ph/0010016v1

Physics

Quantum Physics

Submmited for publication in Physical Review A

Scientific paper

10.1103/PhysRevA.63.023801

We propose an experiment that permits observation of the de Broglie two-photon wave packet behavior for a pair of photons, using a Mach-Zehnder interferometer. It is based on the use of pulsed lasers to generate pairs of photons via spontaneous parametric down-conversion and the post-selection of events. It differs from previous realizations by the use of a third time-correlated photon to engineer the state of the photons. The same technique can give us which-path information via an ``interaction-free'' experiment and can be used in other experiments on the foundations of quantum mechanics related to wave-particle duality and to nonlocality.

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