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Quantum transduction of optical photons from a superconducting qubit

Mirhosseini, Mohammad and Sipahigil, Alp and Kalaee, Mahmoud and Painter, Oskar (2020) Quantum transduction of optical photons from a superconducting qubit. . (Unpublished)

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Bidirectional conversion of electrical and optical signals lies at the foundation of the global internet. Such converters are employed at repeater stations to extend the reach of long-haul fiber optic communication systems and within data centers to exchange high-speed optical signals between computers. Likewise, coherent microwave-to-optical conversion of single photons would enable the exchange of quantum states between remotely connected superconducting quantum processors, a promising quantum computing hardware platform. Despite the prospects of quantum networking, maintaining the fragile quantum state in such a conversion process with superconducting qubits has remained elusive. Here we demonstrate the conversion of a microwave-frequency excitation of a superconducting transmon qubit into an optical photon. We achieve this using an intermediary nanomechanical resonator which converts the electrical excitation of the qubit into a single phonon by means of a piezoelectric interaction, and subsequently converts the phonon to an optical photon via radiation pressure. We demonstrate optical photon generation from the qubit with a signal-to-noise greater than unity by recording quantum Rabi oscillations of the qubit through single-photon detection of the emitted light over an optical fiber. With proposed improvements in the device and external measurement set-up, such quantum transducers may lead to practical devices capable of realizing new hybrid quantum networks, and ultimately, distributed quantum computers.

Item Type:Report or Paper (Working Paper)
Related URLs:
URLURL TypeDescription Paper
Sipahigil, Alp0000-0003-1469-5272
Painter, Oskar0000-0002-1581-9209
Additional Information:The authors would like to thank Matthew Shaw, Jash Banker, Hengjiang Ren, Eunjong Kim, and Xueyue Zhang for their various contributions to this work. This work was supported by the ARO/LPS Cross Quantum Technology Systems program (grant W911NF-18-1-0103), the Institute for Quantum Information and Matter, an NSF Physics Frontiers Center (grant PHY1125565) with support of the Gordon and Betty Moore Foundation, and the Kavli Nanoscience Institute at Caltech. M.M (A.S.) gratefully acknowledges support from a KNI (IQIM) Postdoctoral Fellowship.
Group:Kavli Nanoscience Institute, Institute for Quantum Information and Matter
Funding AgencyGrant Number
Army Research Office (ARO)W911NF-18-1-0103
Gordon and Betty Moore FoundationUNSPECIFIED
Record Number:CaltechAUTHORS:20200416-091933770
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:102572
Deposited By: Joy Painter
Deposited On:16 Apr 2020 16:31
Last Modified:04 Jun 2020 10:14

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