arXiv:1707.02195 · Physical review. B./Physical review. B

Proposal for a quantum interface between photonic and superconducting qubits

Yuta Tsuchimoto, Patrick Knüppel, Aymeric Delteil, Zhe Sun, Martin Kroner, Ataç İmamoğlu

Published Oct 25, 2017• 13 citations

Abstract

We show that optically active coupled quantum dots embedded in a superconducting microwave cavity can be used to realize a fast quantum interface between photonic and transmon qubits. Single-photon absorption by a coupled quantum dot results in generation of a large electric dipole, which in turn ensures efficient coupling to the microwave cavity. Using cavity parameters achieved in prior experiments, we estimate that bidirectional microwave-optics conversion in nanosecond time scales with efficiencies approaching unity is experimentally feasible with current technology. We also outline a protocol for in-principle deterministic quantum state transfer from a time-bin photonic qubit to a transmon qubit. Recent advances in quantum-dot-based quantum photonics technologies indicate that the scheme we propose could play a central role in connecting quantum nodes incorporating cavity-coupled superconducting qubits.

DOI: 10.1103/physrevb.96.165312

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