Interfacing superconducting qubits and telecom photons via a rare-earth-doped crystal

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 ser...

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Bibliographic Details
Published in:Physical review letters 2014-08, Vol.113 (6), p.063603-063603, Article 063603
Main Authors: O'Brien, Christopher, Lauk, Nikolai, Blum, Susanne, Morigi, Giovanna, Fleischhauer, Michael
Format: Article
Language:English
Subjects:
Crystals
Doped crystals
Holes
Microwaves
Photons
Qubits (quantum computing)
Rare earth metals
Superconductivity
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Summary: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%.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.113.063603