Multimode optomechanical system in the quantum regime

William Hvidtfelt Padkær Nielsen; Yeghishe Tsaturyan; Christoffer Bo Møller; Eugene Simon Polzik; Albert Schliesser

doi:10.1073/pnas.1608412114

Multimode optomechanical system in the quantum regime

William Hvidtfelt Padkær Nielsen, Yeghishe Tsaturyan, Christoffer Bo Møller, Eugene Simon Polzik, Albert Schliesser

Kvanteoptik

48 Citationer (Scopus)

Abstract

We realize a simple and robust optomechanical system with a multitude of long-lived (Q > 107 ) mechanical modes in a phononicbandgap shielded membrane resonator. An optical mode of a compact Fabry-Perot resonator detects these modes' motion with a measurement rate (96 kHz) that exceeds the mechanical decoherence rates already at moderate cryogenic temperatures (10 K). Reaching this quantum regime entails, inter alia, quantum measurement backaction exceeding thermal forces and thus strong optomechanical quantum correlations. In particular, we observe ponderomotive squeezing of the output light mediated by a multitude of mechanical resonator modes, with quantum noise suppression up to -2.4 dB (-3.6 dB if corrected for detection losses) and bandwidths ≲90 kHz. The multimode nature of the membrane and Fabry-Perot resonators will allow multimode entanglement involving electromagnetic, mechanical, and spin degrees of freedom.

Originalsprog	Engelsk
Tidsskrift	Proceedings of the National Academy of Sciences USA (PNAS)
Vol/bind	114
Udgave nummer	1
Sider (fra-til)	62-66
ISSN	0027-8424
DOI	https://doi.org/10.1073/pnas.1608412114
Status	Udgivet - 3 jan. 2017

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10.1073/pnas.1608412114

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http://europepmc.org/articles/pmc5224392?pdf=renderLicens: Andet

Citationsformater

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AU - Schliesser, Albert

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N2 - We realize a simple and robust optomechanical system with a multitude of long-lived (Q > 107 ) mechanical modes in a phononicbandgap shielded membrane resonator. An optical mode of a compact Fabry-Perot resonator detects these modes' motion with a measurement rate (96 kHz) that exceeds the mechanical decoherence rates already at moderate cryogenic temperatures (10 K). Reaching this quantum regime entails, inter alia, quantum measurement backaction exceeding thermal forces and thus strong optomechanical quantum correlations. In particular, we observe ponderomotive squeezing of the output light mediated by a multitude of mechanical resonator modes, with quantum noise suppression up to -2.4 dB (-3.6 dB if corrected for detection losses) and bandwidths ≲90 kHz. The multimode nature of the membrane and Fabry-Perot resonators will allow multimode entanglement involving electromagnetic, mechanical, and spin degrees of freedom.

AB - We realize a simple and robust optomechanical system with a multitude of long-lived (Q > 107 ) mechanical modes in a phononicbandgap shielded membrane resonator. An optical mode of a compact Fabry-Perot resonator detects these modes' motion with a measurement rate (96 kHz) that exceeds the mechanical decoherence rates already at moderate cryogenic temperatures (10 K). Reaching this quantum regime entails, inter alia, quantum measurement backaction exceeding thermal forces and thus strong optomechanical quantum correlations. In particular, we observe ponderomotive squeezing of the output light mediated by a multitude of mechanical resonator modes, with quantum noise suppression up to -2.4 dB (-3.6 dB if corrected for detection losses) and bandwidths ≲90 kHz. The multimode nature of the membrane and Fabry-Perot resonators will allow multimode entanglement involving electromagnetic, mechanical, and spin degrees of freedom.

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Multimode optomechanical system in the quantum regime

Abstract

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