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

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48 Citations (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.

Original language	English
Journal	Proceedings of the National Academy of Sciences USA (PNAS)
Volume	114
Issue number	1
Pages (from-to)	62-66
ISSN	0027-8424
DOIs	https://doi.org/10.1073/pnas.1608412114
Publication status	Published - 3 Jan 2017

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Cite this

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title = "Multimode optomechanical system in the quantum regime",

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.",

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T1 - Multimode optomechanical system in the quantum regime

AU - Nielsen, William Hvidtfelt Padkær

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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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