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arXiv · 2107.04582

Coherence of Quantum States after Noiseless Attenuation

S. U. Shringarpure·C. M. Nunn·T. B. Pittman·J. D. Franson
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Abstract

Attenuating a quantum state using a beam splitter will introduce noise and decoherence. Here we show that heralding techniques can be used to attenuate Schr\"odinger cat states and squeezed vacuum states without any noise or decoherence [Mi\v{c}uda et al., Phys. Rev. Lett. 109, 180503 (2012)]. Noiseless attenuation also preserves quantum interference effects in nonclassical states such as squeezed vacuum states.

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S. U. Shringarpure, C. M. Nunn, T. B. Pittman, J. D. Franson. 2021-07-09. Coherence of Quantum States after Noiseless Attenuation. https://doi.org/10.1103/physreva.105.013704

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