Quantum emitters coupled to surface plasmons of an nanowire: A Green's function approach

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David Dzsotjan, Anders Søndberg Sørensen, Michael Fleischhauer

We investigate a system consisting of a single, as well as two emitters strongly coupled to surface plasmon modes of a nanowire using a Green's function approach. Explicit expressions are derived for the spontaneous decay rate into the plasmon modes and for the atom-plasmon coupling as well as a plasmon-mediated atom-atom coupling. Phenomena due to the presence of losses in the metal are discussed. In case of two atoms, we observe Dicke subradiance and superradiance resulting from their plasmon-mediated interaction. Based on this phenomenon, we propose a scheme for a deterministic two-qubit quantum gate. We also discuss a possible realization of interesting many-body Hamiltonians, such as the spin-boson model, using strong emitter-plasmon coupling.
Udgivelsesdato: 27 August
TidsskriftPhysical Review B. Condensed Matter and Materials Physics
Udgave nummer7
Sider (fra-til)075427
Antal sider13
StatusUdgivet - 11 aug. 2010

ID: 21857802