Coherence of Quantum States after Noiseless Attenuation

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PhysRevA.105.013704 (2).pdf (1.24 MB)

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http://hdl.handle.net/11603/22209
 https://doi.org/10.1103/PhysRevA.105.013704

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https://orcid.org/0000-0003-0576-9145
 https://orcid.org/0000-0002-3269-1091
 https://orcid.org/0000-0001-8712-3051

Date

2022-01-06

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journal articles
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Citation of Original Publication

Shringarpure, S. U., et al. "Coherence of quantum states after noiseless attenuation." Phys. Rev. A 105, no. 1 (6 January 2022). https://doi.org/10.1103/PhysRevA.105.013704

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May be used only for educational or research purposes.

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UMBC Quantum Information Group

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 Schrödinger cat states and squeezed vacuum states without any noise or decoherence [Mičuda et al., Phys. Rev. Lett. 109, 180503 (2012)]. Noiseless attenuation also preserves quantum interference effects in nonclassical states such as squeezed vacuum states.