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arXiv · 1606.04369

Discorrelated quantum states

Evan Meyer-Scott·Johannes Tiedau·Georg Harder·Lynden K. Shalm·Tim J. Bartley
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Abstract

The statistical properties of photons are fundamental to investigating quantum mechanical phenomena using light. In multi-photon, two-mode systems, correlations may exist between outcomes of measurements made on each mode which exhibit useful properties. Correlation in this sense can be thought of as increasing the probability of a particular outcome of a measurement on one subsystem given a measurement on a correlated subsystem. Here, we show a statistical property we call "discorrelation," in which the probability of a particular outcome of one subsystem is reduced to zero, given a measurement on a discorrelated subsystem. We show how such a state can be constructed using readily available building blocks of quantum optics, namely coherent states, single photons, beam splitters and projective measurement. We present a variety of discorrelated states, show that they are entangled, and study their sensitivity to loss.

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Evan Meyer-Scott, Johannes Tiedau, Georg Harder, Lynden K. Shalm, Tim J. Bartley. 2016-06-14. Discorrelated quantum states. https://doi.org/10.1038/srep41622

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