Conditional measurement on the idler mode of a parametric amplifier converts an input coherent state into a gain-tunable superposition of an attenuated coherent state and a displaced single-photon state, including photon-added states in the high-gain limit.
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Generating photon-added states without adding a photon
Conditional measurement on the idler mode of a parametric amplifier converts an input coherent state into a gain-tunable superposition of an attenuated coherent state and a displaced single-photon state, including photon-added states in the high-gain limit.