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arXiv · 0902.0402

Giant Kerr nonlinearities in Circuit-QED

Stojan Rebic·Jason Twamley·Gerard J. Milburn
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Abstract

The very small size of optical nonlinearities places wide ranging restrictions on the types of novel physics one can explore. For an ensemble of multi-level systems one can synthesize a large effective optical nonlinearity using quantum coherence effects but such non-linearities are technically extremely challenging to demonstrate at the single atom level. In this work we describe how a single artificial multi-level Cooper Pair Box molecule, interacting with a superconducting microwave coplanar waveguide resonator, when suitably driven, can generate extremely large optical nonlinearities at microwave frequencies, with no associated absorption. We describe how the giant self-Kerr effect can be detected by measuring the second-order correlation function and quadrature squeezing spectrum.

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Stojan Rebic, Jason Twamley, Gerard J. Milburn. 2009-10-09. Giant Kerr nonlinearities in Circuit-QED. https://doi.org/10.1103/physrevlett.103.150503

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