Twin-beam-enhanced displacement measurement of a membrane in a cavity
arXiv:1902.04288 · doi:10.1063/1.5129547
Abstract
Ultrasensitive measurement of a small displacement is an essential goal in various applications of science and technology, ranging from large-scale laser interferometric gravitational wave detectors to micro-electro-mechanical-systems-based force microscopy. The least measurable displacement is ultimately limited by the quantum nature of light in a classical optical sensor. Here we use the bright quantum correlated light, i.e., twin beams, generated by a coherent atomic medium to surpass the shot-noise limit (SNL) of the displacement measurement of a membrane in an optical cavity. The sensitivity of 200 is achieved, which is more than two orders of magnitude better than a standard Michelson interferometer. An improvement of 3 in the signal-to-noise ratio (SNR) beyond the SNL is realized at an equivalent optical power, by using quantum correlated light with noise squeezed 7 below the vacuum level. Moreover, the frequency correlation of twin beams is directly measured by using optical cavities, and this relation is utilized to reduce the excess classical noise. Additionally, the displacement measurement sensitivity is further substantially enhanced by the cavity mediated dispersion and the SNR is increased by one order of magnitude compared to the free space case. These results provide a novel strategy for the world of precision measurement as well as to control cavity optomechanical systems with non-classical light.
References in corpus (25)
- Laser cooling of a nanomechanical oscillator into its quantum ground state
- Strong dispersive coupling of a high finesse cavity to a micromechanical membrane
- Enhancing the sensitivity of the LIGO gravitational wave detector by using squeezed states of light
- Advances in Photonic Quantum Sensing
- The photon blockade effect in optomechanical systems
- Biological measurement beyond the quantum limit
- Near-field cavity optomechanics with nanomechanical oscillators
- Measurement-based quantum control of mechanical motion
- Observation of Radiation Pressure Shot Noise on a Macroscopic Object
- Strong relative intensity squeezing by 4-wave mixing in Rb vapor
- A Quantum-Enhanced Prototype Gravitational-Wave Detector
- Quantum Enhancement of the Zero-Area Sagnac Interferometer Topology for Gravitational Wave Detection
- Cavity optomechanics with stoichiometric SiN films
- Experimental demonstration of a squeezing enhanced power recycled Michelson interferometer for gravitational wave detection
- Ultrasensitive measurement of MEMS cantilever displacement sensitivity below the shot noise limit
- High-sensitivity monitoring of micromechanical vibration using optical whispering gallery mode resonators
- Quantum-Enhanced Plasmonic Sensing
- Demonstration of a squeezed light enhanced power- and signal-recycled Michelson interferometer
- Searching for ultra-light dark matter with optical cavities
- Normal--mode splitting in a weakly coupled optomechanical system
- Observation of Spatial Quantum Correlations in the Macroscopic Regime
- Imaging using quantum noise properties of light
- Strong quantum correlations in four wave mixing in Rb vapor
- Mechanical Spectroscopy of Parametric Amplification in a High-Q Membrane Microresonator
- Twin-beam intensity-difference squeezing below 10 Hz