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A practical photon-number-resolving detector in the microwave regime

B. Fan ; T. M. Stace ; G. J. Milburn ; Göran Johansson (Institutionen för mikroteknologi och nanovetenskap, Tillämpad kvantfysik) ; Christopher Wilson (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik)
International Quantum Electronics Conference, IQEC 2011; Sydney;,Australia; 28 Aug -1 Sep 2011 p. 2072-2074. (2011)
[Konferensbidrag, refereegranskat]

We present a scheme for microwave photon detection via cross Kerr nonlinearity between two microwave modes mediated by a transmon. Using a cascaded, stochastic master equation method and conditional measurement simulations, we analyze the dependence of the probe phase shift on the control photon number. We demonstrate here that for a microwave pulse with a few photons (below 10), the relationship between the phase shift and the photon number is almost linear. Also, in our scheme, microwave photons to be detected are guided by a 1D transmission line, rather than a cavity, making it suitable for a wide range of frequencies. Finally, the signal-noise-ratio (SNR) and the feasibility of this scheme for experimental realization are discussed. Our scheme might help to build a practical photon detector in the microwave regime.

Denna post skapades 2014-03-20. Senast ändrad 2014-09-02.
CPL Pubid: 195335


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