Dispersive regime of the Jaynes-Cummings and Rabi lattice

Guanyu Zhu, Sebastian Schmidt, Jens Koch*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Scopus citations


Photon-based strongly correlated lattice models like the Jaynes-Cummings and Rabi lattices differ from their more conventional relatives like the Bose-Hubbard model by the presence of an additional tunable parameter: the frequency detuning between the pseudo-spin degree of freedom and the harmonic mode frequency on each site. Whenever this detuning is large compared to relevant coupling strengths, the system is said to be in the dispersive regime. The physics of this regime is well-understood at the level of a single Jaynes-Cummings or Rabi site. Here, we extend the theoretical description of the dispersive regime to lattices with many sites, for both strong and ultra-strong coupling. We discuss the nature and spatial range of the resulting qubit-qubit and photon-photon coupling, demonstrate the emergence of photon-pairing and squeezing and illustrate our results by exact diagonalization of the Rabi dimer.

Original languageEnglish (US)
Article number115002
JournalNew Journal of Physics
StatePublished - Nov 2013

ASJC Scopus subject areas

  • Physics and Astronomy(all)


Dive into the research topics of 'Dispersive regime of the Jaynes-Cummings and Rabi lattice'. Together they form a unique fingerprint.

Cite this