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Progress towards the measurement of quantum radiation pressure noise

J. Cripe, Robinjeet Singh, Warren W. Johnson +2 more

Bulletin of the American Physical SocietyApr 12, 20150 citations

Quantum Radiation Pressure Noise Reduction and Evasion

J. Cripe

Springer thesesJan 1, 20200 citations

Broadband Measurement of Quantum Radiation Pressure Noise at Room Temperature

J. Cripe

Springer thesesJan 1, 20201 citation

Broadband reduction of quantum radiation pressure noise via squeezed light injection

M. J. Yap, J. Cripe, Georgia L. Mansell +8 more

arXiv:1812.09804Nature PhotonicsOct 7, 201969 citations

Observation of Radiation Pressure Shot Noise on a Macroscopic Object

Thomas Purdy, Robert W. Peterson, Cindy A. Regal

The quantum mechanics of position measurement of a macroscopic object is typically inaccessible because of strong coupling to the environment and classical noise. In this work, we monitor a mechanical resonator subject to an increasingly strong continuous position measurement and observe a quantum mechanical back-action force that rises in accordance with the Heisenberg uncertainty limit. For our optically based position measurements, the back-action takes the form of a fluctuating radiation pressure from the Poisson-distributed photons in the coherent measurement field, termed radiation pressure shot noise. We demonstrate a back-action force that is comparable in magnitude to the thermal forces in our system. Additionally, we observe a temporal correlation between fluctuations in the radiation force and in the position of the resonator.The quantum mechanics of position measurement of a macroscopic object is typically inaccessible because of strong coupling to the environment and classical noise. In this work, we monitor a mechanical resonator subject to an increasingly strong continuous position measurement and observe a quantum mechanical back-action force that rises in accordance with the Heisenberg uncertainty limit. For our optically based position measurements, the back-action takes the form of a fluctuating radiation pressure from the Poisson-distributed photons in the coherent measurement field, termed radiation pressure shot noise. We demonstrate a back-action force that is comparable in magnitude to the thermal forces in our system. Additionally, we observe a temporal correlation between fluctuations in the radiation force and in the position of the resonator.

arXiv:1209.6334ScienceFeb 14, 2013398 citations

Overwhelming Thermomechanical Motion with Microwave Radiation Pressure Shot Noise

John D. Teufel, Florent Lecocq, Raymond W. Simmonds

We measure the fundamental noise processes associated with a continuous linear position measurement of a micromechanical membrane incorporated in a microwave cavity optomechanical circuit. We observe the trade-off between the two fundamental sources of noise that enforce the standard quantum limit: the measurement imprecision and radiation pressure backaction from photon shot noise. We demonstrate that the quantum backaction of the measurement can overwhelm the intrinsic thermal motion by 24 dB, entering a new regime for cavity optomechanical systems.We measure the fundamental noise processes associated with a continuous linear position measurement of a micromechanical membrane incorporated in a microwave cavity optomechanical circuit. We observe the trade-off between the two fundamental sources of noise that enforce the standard quantum limit: the measurement imprecision and radiation pressure backaction from photon shot noise. We demonstrate that the quantum backaction of the measurement can overwhelm the intrinsic thermal motion by 24 dB, entering a new regime for cavity optomechanical systems.

arXiv:1508.05320Physical Review LettersJan 6, 201661 citations

Progress towards observation of radiation pressure shot noise

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Progress towards observation of radiation pressure shot noise

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