Shringarpure, S. U.Nunn, CoryPittman, ToddFranson, J. D.2021-07-292021-07-292022-01-06Shringarpure, 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.105.013704http://hdl.handle.net/11603/22209https://doi.org/10.1103/PhysRevA.105.013704Attenuating 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.8 pagesen-USMay be used only for educational or research purposes.UMBC Quantum Information GroupText