A practical photon-number-resolving detector in the microwave regime
Paper i proceeding, 2011

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.


B. Fan

T. M. Stace

G. J. Milburn

Göran Johansson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Christopher Wilson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

International Quantum Electronics Conference, IQEC 2011; Sydney;,Australia; 28 Aug -1 Sep 2011