Multiparticle Quantum Superposition and Stimulated Entanglement by Parity Selective Amplification of Entangled States

Abstract

A multiparticle quantum superposition state has been generated by a novel phase-selective parametric amplifier of an entangled two-photon state. This realization is expected to open a new field of investigations on the persistence of the validity of the standard quantum theory for systems of increasing complexity, in a quasi decoherence-free environment. Because of its nonlocal structure the new system is expected to play a relevant role in the modern endeavor on quantum information and in the basic physics of entanglement.

13 pages and 3 figures

References in corpus (1)

• Experimental Realization of Teleporting an Unknown Pure Quantum State via Dual Classical and Einstein-Podolski-Rosen Channels

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• Quantum Control and Representation Theory
• Scalable symmetry detector and its applications by using beam splitters and weak nonlinearities