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Photon-mediated qubit interactions in one-dimensional discrete and continuous models

AuthorsDíaz-Camacho, G. ; Porras, D.; García-Ripoll, Juan José
Issue Date23-Jun-2015
PublisherAmerican Physical Society
CitationPhysical Review A - Atomic, Molecular, and Optical Physics 91: 063828 (2015)
Abstract© 2015 American Physical Society. In this work we study numerically and analytically the interaction of two qubits in a one-dimensional waveguide, as mediated by the photons that propagate through the guide. We develop strategies to assert the Markovianity of the problem, the effective qubit-qubit interactions, and their individual and collective spontaneous emission. We prove the existence of collective Lamb shifts that affect the qubit-qubit interactions and the dependency of coherent and incoherent interactions on the qubit separation. We also develop the scattering theory associated with these models and prove single-photon spectroscopy does probe the renormalized resonances of the single- and multiqubit models, in sharp contrast to earlier toy models in which individual and collective Lamb shifts cancel.
Description11 págs.; 9 figs.; 1 app.; PACS number(s): 42.50.Pq, 42.50.Gy, 32.80.−t, 85.25.Cp
Publisher version (URL)http://dx.doi.org/10.1103/PhysRevA.91.063828
Identifiersdoi: 10.1103/PhysRevA.91.063828
issn: 1094-1622
Appears in Collections:(CFMAC-IFF) Artículos
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