title: Interfacing superconducting qubits and telecom photons via a rare-earth-doped crystal.
abstract: We propose a scheme to couple short single photon pulses to superconducting qubits. An optical photon is first absorbed into an inhomogeneously broadened rare-earth doped crystal using controlled reversible inhomogeneous broadening. The optical excitation is then mapped into a spin state using a series of π pulses and subsequently transferred to a superconducting qubit via a microwave cavity. To overcome the intrinsic and engineered inhomogeneous broadening of the optical and spin transitions in rare-earth doped crystals, we make use of a special transfer protocol using staggered π pulses. We predict total transfer efficiencies on the order of 90%.
authors.affiliation: Fachbereich Physik und Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern, D-67663 Kaiserslautern, Germany.
authors.forename: Christopher
authors.initials: C
authors.lastname: O'Brien
authors.affiliation: Fachbereich Physik und Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern, D-67663 Kaiserslautern, Germany.
authors.forename: Nikolai
authors.initials: N
authors.lastname: Lauk
authors.affiliation: Theoretische Physik, Universität des Saarlandes, D-66123 Saarbrücken, Germany.
authors.forename: Susanne
authors.initials: S
authors.lastname: Blum
authors.affiliation: Theoretische Physik, Universität des Saarlandes, D-66123 Saarbrücken, Germany.
authors.forename: Giovanna
authors.initials: G
authors.lastname: Morigi
authors.affiliation: Fachbereich Physik und Forschungszentrum OPTIMAS, Technische Universität Kaiserslautern, D-67663 Kaiserslautern, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Fleischhauer