Regensburg 2013 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 42: Quantum Coherence, Quantum Information Systems 2

TT 42.12: Vortrag

Mittwoch, 13. März 2013, 18:30–18:45, H18

Generation of Nonclassical States of Microwave Radiation via Single Photon Detection — •Luke C.G. Govia, Emily J. Pritchett, and Frank K. Wilhelm — Saarland University, Saarbrücken, Germany

We describe the creation of nonclassical states of microwave radiation via single photon detection, using an ideal dichotomic detector. Ideally, such a detector only indicates the presence or absence of photons and, as such, will have a back action in the form of the subtraction operator. Using the non-linearity of this back action, it is possible to create nonclassical states of microwave radiation, including squeezed and cat-like states, starting from a coherent state. One such dichotomic single photon detector is the Josephson Photomultiplier (JPM), as discussed in [1]. We discuss the implementation of this protocol using JPMs and their necessary regime of experimental operation.
[1] Phys. Rev. A 86, 032311 (2012)