High-sensitivity three-mode optomechanical transducer

C. Zhao; Q. Fang; S. Susmithan; H. Miao; L. Ju; Y. Fan; D. Blair; D. J. Hosken; J. Munch; P. J. Veitch; B. J.J. Slagmolen

doi:10.1103/PhysRevA.84.063836

High-sensitivity three-mode optomechanical transducer

C. Zhao^*, Q. Fang, S. Susmithan, H. Miao, L. Ju, Y. Fan, D. Blair, D. J. Hosken, J. Munch, P. J. Veitch, B. J.J. Slagmolen

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

Three-mode optomechanical interactions have been predicted to allow the creation of very high sensitivity transducers in which very strong optical self-cooling and strong optomechanical quantum entanglement are predicted. Strong coupling is achieved by engineering a transducer in which both the pump laser and a single signal sideband frequency are resonantly enhanced. Here we demonstrate that very high sensitivity can be achieved in a very simple system consisting of a Fabry-Perot cavity with CO ₂ laser thermal tuning. We demonstrate a displacement sensitivity of ∼1×10 ^-17m/ √Hz, which is sufficient to observe a thermally excited acoustic mode in a 5.6 kg sapphire mirror with a signal-to-noise ratio of more than 20 dB. It is shown that a measurement sensitivity of ∼2×10 ^-20m/√Hz limited by the quantum shot noise is achievable with optimization of the cavity parameters.

Original language	English
Article number	063836
Journal	Physical Review A - Atomic, Molecular, and Optical Physics
Volume	84
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevA.84.063836
Publication status	Published - 16 Dec 2011

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title = "High-sensitivity three-mode optomechanical transducer",

abstract = "Three-mode optomechanical interactions have been predicted to allow the creation of very high sensitivity transducers in which very strong optical self-cooling and strong optomechanical quantum entanglement are predicted. Strong coupling is achieved by engineering a transducer in which both the pump laser and a single signal sideband frequency are resonantly enhanced. Here we demonstrate that very high sensitivity can be achieved in a very simple system consisting of a Fabry-Perot cavity with CO 2 laser thermal tuning. We demonstrate a displacement sensitivity of ∼1×10 -17m/ √Hz, which is sufficient to observe a thermally excited acoustic mode in a 5.6 kg sapphire mirror with a signal-to-noise ratio of more than 20 dB. It is shown that a measurement sensitivity of ∼2×10 -20m/√Hz limited by the quantum shot noise is achievable with optimization of the cavity parameters.",

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AU - Zhao, C.

AU - Fang, Q.

AU - Susmithan, S.

AU - Miao, H.

AU - Ju, L.

AU - Fan, Y.

AU - Blair, D.

AU - Hosken, D. J.

AU - Munch, J.

AU - Veitch, P. J.

AU - Slagmolen, B. J.J.

PY - 2011/12/16

Y1 - 2011/12/16

N2 - Three-mode optomechanical interactions have been predicted to allow the creation of very high sensitivity transducers in which very strong optical self-cooling and strong optomechanical quantum entanglement are predicted. Strong coupling is achieved by engineering a transducer in which both the pump laser and a single signal sideband frequency are resonantly enhanced. Here we demonstrate that very high sensitivity can be achieved in a very simple system consisting of a Fabry-Perot cavity with CO 2 laser thermal tuning. We demonstrate a displacement sensitivity of ∼1×10 -17m/ √Hz, which is sufficient to observe a thermally excited acoustic mode in a 5.6 kg sapphire mirror with a signal-to-noise ratio of more than 20 dB. It is shown that a measurement sensitivity of ∼2×10 -20m/√Hz limited by the quantum shot noise is achievable with optimization of the cavity parameters.

AB - Three-mode optomechanical interactions have been predicted to allow the creation of very high sensitivity transducers in which very strong optical self-cooling and strong optomechanical quantum entanglement are predicted. Strong coupling is achieved by engineering a transducer in which both the pump laser and a single signal sideband frequency are resonantly enhanced. Here we demonstrate that very high sensitivity can be achieved in a very simple system consisting of a Fabry-Perot cavity with CO 2 laser thermal tuning. We demonstrate a displacement sensitivity of ∼1×10 -17m/ √Hz, which is sufficient to observe a thermally excited acoustic mode in a 5.6 kg sapphire mirror with a signal-to-noise ratio of more than 20 dB. It is shown that a measurement sensitivity of ∼2×10 -20m/√Hz limited by the quantum shot noise is achievable with optimization of the cavity parameters.

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High-sensitivity three-mode optomechanical transducer

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