The quantum optical Josephson interferometer

Details The quantum optical Josephson interferometer The quantum optical Josephson interferometer

2008-11-23

arxiv.org/abs/0811.3762v1

NATURE PHYSICS vol. 5, pp. 281-284 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 7 figures

Scientific paper

10.1038/nphys1223

The interplay between coherent tunnel coupling and on-site interactions in dissipation-free bosonic systems has lead to many spectacular observations, ranging from the demonstration of number-phase uncertainty relation to quantum phase transitions. To explore the effect of dissipation and coherent drive on tunnel coupled interacting bosonic systems, we propose a device that is the quantum optical analog of a Josephson interferometer. It consists of two coherently driven linear optical cavities connected via a central cavity with a single-photon nonlinearity. The Josephson-like oscillations in the light emitted from the central cavity as a function of the phase difference between two pumping fields can be suppressed by increasing the strength of the nonlinear coupling. Remarkably, we find that in the limit of ultra-strong interactions in the center-cavity, the coupled system maps on to an effective Jaynes-Cummings system with a nonlinearity determined by the tunnel coupling strength. In the limit of a single nonlinear cavity coupled to two linear waveguides, the degree of photon antibunching from the nonlinear cavity provides an excellent measure of the transition to the nonlinear regime where Josephson oscillations are suppressed.

Affiliated with

Also associated with

No associations

Rating

The quantum optical Josephson interferometer does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with The quantum optical Josephson interferometer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The quantum optical Josephson interferometer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-338785