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

Diaz-Camacho, Guillermo, Porras, Diego and Garcia-Ripoll, Juan Jose (2015) Photon-mediated qubit interactions in one-dimensional discrete and continuous models. Physical Review A (PRA), 91 (6).

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Abstract

In this work we study numerically and analytically the interaction of two qubits in a one-dimensionalwaveguide, 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 singleand multiqubit models, in sharp contrast to earlier toy models in which individual and collective Lamb shifts cancel.

Item Type: Article
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics
Depositing User: Richard Chambers
Date Deposited: 19 Oct 2015 14:20
Last Modified: 14 Mar 2017 05:27
URI: http://sro.sussex.ac.uk/id/eprint/57191

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