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Superconducting Qubits Photonic Quantum Computing

Elimination of Thermomechanical Noise in Piezoelectric Optomechanical Crystals

arXiv

Authors: H. Ramp, B. D. Hauer, K. C. Balram, T. J. Clark, K. Srinivasan, J. P. Davis

Year

2018

Paper ID

39434

Status

Preprint

Abstract Read

~2 min

Abstract Words

101

Citations

N/A

Abstract

Mechanical modes are a potentially useful resource for quantum information applications, such as quantum-level wavelength transducers, due to their ability to interact with electromagnetic radiation across the spectrum. A significant challenge for wavelength transducers is thermomechanical noise in the mechanical mode, which pollutes the transduced signal with thermal states. In this paper, we eliminate thermomechanical noise in the GHz-frequency mechanical breathing mode of a piezoelectric optomechanical crystal using cryogenic cooling in a dilution refrigerator. We optically measure an average thermal occupancy of the mechanical mode of only 0.7pm0.4 phonons, providing a path towards low-noise microwave-to-optical conversion in the quantum regime.

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Mechanical modes are a potentially useful resource for quantum information applications, such as quantum-level wavelength transducers, due to their ability to interact with...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1812.09417 [2] arXiv https://arxiv.org/abs/1812.09417 [3] Publisher https://arxiv.org/abs/1812.09417

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