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

Francesco De Martini·Giovanni Di Giuseppe
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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.

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Francesco De Martini, Giovanni Di Giuseppe. 2000-11-20. Multiparticle Quantum Superposition and Stimulated Entanglement by Parity Selective Amplification of Entangled States. https://doi.org/10.1103/physrevlett.87.150401

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