2009/08/31 by Martin Kiffner, Michael J. Hartmann · 46 citations
Computer Science · Physics and Astronomy · #Condensed matter physics #Dissipation #Dissipative system #Photon #Physics #Polariton #Quantum Information and Cryptography #Quantum electrodynamics #Quantum mechanics #Quantum optics and atomic interactions #Strong Light-Matter Interactions #cond-mat.quant-gas #quant-ph
paper · pdf · doi:10.1103/physreva.81.021806
published in Physical Review A 81(2) (American Physical Society) · 4 pages, 1 figure
arxiv created 2009/09/17 · openalex publication_date 2010/02/26 · arxiv updated 2015/05/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
A scheme for the generation of a Tonks-Girardeau (TG) gas of polaritons with purely dissipative interaction is described. We put forward a master equation approach for the description of stationary light in atomic four-level media and show that, under suitable conditions, two-particle decays are the dominant photon loss mechanism. These dissipative two-photon losses increase the interaction strength by at least one order of magnitude as compared to dispersive two-photon processes and can drive the polaritons into the TG regime. Characteristic correlations of the TG gas, including quantities that distinguish it from free fermions, can be measured via standard quantum optical techniques. Our scheme thus allows one to feasibly generate highly correlated photon states, which can be of considerable use in quantum-information processing and precision measurements.