6533b839fe1ef96bd12a6592
RESEARCH PRODUCT
Dressed emitters as impurities
Bernardo SpagnoloBernardo SpagnoloAngelo CarolloDavide ValentiFrancesco CiccarelloFrancesco CiccarelloLuca Leonfortesubject
Atom-photon bound states quantum optics waveguide-QEDQC1-999FOS: Physical sciencesContext (language use)ImpurityQuantum mechanicsBound statePhysics::Atomic Physicsquantum opticsElectrical and Electronic EngineeringQuantumResolventCommon emitterPhysicsQuantum Physicsphotonic band-gap materials; quantum optics; waveguide-QEDbusiness.industryphotonic band-gap materialsPhysicsAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsConnection (mathematics)waveguide-qedPhotonicsbusinessQuantum Physics (quant-ph)Biotechnologydescription
Dressed states forming when quantum emitters or atoms couple to a photonic bath underpin a number of phenomena and applications, in particular dispersive effective interactions occurring within photonic bandgaps. Here, we present a compact formulation of the resolvent-based theory for calculating atom-photon dressed states built on the idea that the atom behaves as an effective impurity. This establishes an explicit connection with the standard impurity problem in condensed matter. Moreover, it allows us to formulate and settle in a model-independent context a number of properties previously known only for specific models or not entirely formalized. The framework is next extended to the case of more than one emitter, which is used to derive a general expression of dissipationless effective Hamiltonians explicitly featuring the overlap of single-emitter dressed bound states.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-11-01 |