Detecting quantum phase transitions of photons through a defect cavity

Details Detecting quantum phase transitions of photons through a defect cavity Detecting quantum phase transitions of photons through a defect cavity

Aug 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011njph...13h3036l&link_type=abstract

New Journal of Physics, Volume 13, Issue 8, pp. 083036 (2011).

Physics

Scientific paper

The quantum phase transition of photons between the Mott-insulating and superfluid states can take place in a periodic array of nanocavities, where the photons are strongly coupled to a two-level system inside each cavity. Here we consider a defect cavity inside the array structure and examine the dynamics of the corresponding photons using the non-equilibrium formalism. The global signatures of the phase transition, such as the compressibility and order parameter, are revealed in the defect-cavity photon number. Furthermore, an open electron transport device (a transport qubit) can be embedded in the defect cavity for the detection of the quantum phase transition.

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