Shringarpure, S.U.Franson, J.D.2019-11-212019-11-212019-10-02Shringarpure, S.U.; Franson, J.D.; Generating photon-added states without adding a photon; PHYSICAL REVIEW A 100,4 (2019); https://journals.aps.org/pra/abstract/10.1103/PhysRevA.100.043802;https://doi.org/10.1103/PHYSREVA.100.043802http://hdl.handle.net/11603/16502We show that a continuous range of nonclassical states of light can be generated using conditional measurements on the idler mode of an optical parametric amplifier. The output state is prepared by introducing a coherent state in the signal mode of the amplifier with a single photon in the idler mode, followed by a conditional measurement of a single photon in the output idler mode. By varying the gain of the amplifier, this approach can produce a coherent state, a photon-added state, a displaced number state, or a continuous range of other nonclassical states with intermediate properties. We note that this approach can generate a photon-added state even though the postselected amplifier does not add any photons to the signal or idler modes. The ability to generate a continuous range of nonclassical states may have practical applications in quantum information processing.11 pagesen-USThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.©2019 American Physical Society APSquantum theoryquantum measurementsoptics & lasersquantum opticsquantum state engineeringquantum states of lightatomic, molecular & opticalText