Optomechanical Ground-State Cooling in a Continuous and Efficient Electro-Optic Transducer

The demonstration of a quantum link between microwave and optical frequencies would be an important step toward the realization of a quantum network of superconducting processors. A major impediment to quantum electro-optic transduction in all platforms explored to date is noise added by thermal occ...

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Bibliographic Details
Published inPhysical review. X Vol. 12; no. 2; p. 021062
Main Authors Brubaker, B. M., Kindem, J. M., Urmey, M. D., Mittal, S., Delaney, R. D., Burns, P. S., Vissers, M. R., Lehnert, K. W., Regal, C. A.
Format Journal Article
LanguageEnglish
Published College Park American Physical Society 01.06.2022
Subjects
Cavity resonators
Cooling
Couples
Ground state
Laser beam heating
Lasers
Microwave circuits
Optics
Photons
Quantum computers
Quantum computing
Quantum entanglement
Superconductivity
Vibration mode
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Summary:The demonstration of a quantum link between microwave and optical frequencies would be an important step toward the realization of a quantum network of superconducting processors. A major impediment to quantum electro-optic transduction in all platforms explored to date is noise added by thermal occupation of modes involved in the transduction process, and it has proved difficult to realize low thermal occupancy concurrently with other desirable features like high duty cycle and high efficiency. In this work, we present an efficient and continuously operating electro-optomechanical transducer whose mechanical mode has been optically sideband cooled to its quantum ground state. The transducer achieves a maximum efficiency of 47% and minimum input-referred added noise of 3.2 photons in upconversion. Moreover, the thermal occupancy of the transducer’s microwave mode is minimally affected by continuous laser illumination with power more than 2 orders of magnitude greater than that required for optomechanical ground-state cooling.
ISSN:2160-3308
2160-3308
DOI:10.1103/PhysRevX.12.021062