# Quantum correlations between light and the kilogram-mass mirrors of LIGO

@article{Yu2020QuantumCB, title={Quantum correlations between light and the kilogram-mass mirrors of LIGO}, author={Haocun Yu and L. McCuller and M. Tse and L. Barsotti and N. Mavalvala and J. Betzwieser and C. Blair and S. Dwyer and A. Effler and M. Evans and {\'A}. Fern{\'a}ndez-Galiana and P. Fritschel and V. Frolov and N. Kijbunchoo and F. Matichard and D. McClelland and T. Mcrae and A. Mullavey and D. Sigg and B. Slagmolen and C. Whittle and A. Buikema and Y. Chen and T. Corbitt and R. Schnabel and R. Abbott and C. Adams and R. Adhikari and A. Ananyeva and S. Appert and K. Arai and J. Areeda and Y. Asali and S. Aston and C. Austin and A. Baer and M. Ball and S. Ballmer and S. Banagiri and D. Barker and J. Bartlett and B. K. Berger and D. Bhattacharjee and G. Billingsley and S. Biscans and R. Blair and N. Bode and P. Booker and R. Bork and A. Bramley and A. Brooks and D. Brown and C. Cahillane and K. Cannon and X. Chen and A. Ciobanu and F. Clara and S. Cooper and K. Corley and S. Countryman and P. B. Covas and D. Coyne and L. Datrier and D. Davis and C. D. Fronzo and K. Dooley and J. Driggers and P. Dupej and T. Etzel and T. Evans and J. Feicht and P. Fulda and M. Fyffe and J. Giaime and K. Giardina and P. Godwin and E. Goetz and S. Gras and C. Gray and R. Gray and A. Green and Anchal Gupta and E. Gustafson and R. Gustafson and J. Hanks and J. Hanson and T. Hardwick and R. Hasskew and M. Heintze and A. Helmling-Cornell and N. Holland and J. Jones and S. Kandhasamy and S. Karki and M. Kasprzack and K. Kawabe and P. King and J. Kissel and Rahul Kumar and M. Landry and B. Lane and B. Lantz and M. Laxen and Y. Lecoeuche and J. Leviton and J. Liu and M. Lormand and A. Lundgren and R. Macas and M. Macinnis and D. Macleod and G. Mansell and S. M'arka and Z. M'arka and D. Martynov and K. Mason and T. Massinger and R. McCarthy and S. McCormick and J. Mciver and G. Mendell and K. Merfeld and E. Merilh and F. Meylahn and T. Mistry and R. Mittleman and G. Moreno and C. Mow-Lowry and S. Mozzon and T. Nelson and P. Nguyen and L. Nuttall and J. Oberling and R. Oram and C. Osthelder and D. Ottaway and H. Overmier and J. Palamos and W. Parker and E. Payne and A. Pele and C. Perez and M. Pirello and H. Radkins and K. Ramirez and J. Richardson and K. Riles and N. Robertson and J. Rollins and C. Romel and J. Romie and M. Ross and K. Ryan and T. Sadecki and E. Sanchez and L. Sanchez and T. R. Saravanan and R. Savage and D. Schaetzl and R. Schofield and E. Schwartz and D. Sellers and T. Shaffer and J. Smith and S. Soni and B. Sorazu and A. Spencer and K. Strain and L. Sun and M. J. Szczepa'nczyk and M. Thomas and P. Thomas and K. Thorne and K. Toland and C. Torrie and G. Traylor and A. Urban and G. Vajente and G. Valdes and D. Vander-Hyde and P. Veitch and K. Venkateswara and Gautam Venugopalan and A. Viets and T. Vo and C. Vorvick and M. Wade and R. Ward and J. Warner and B. Weaver and R. Weiss and B. Willke and C. Wipf and L. Xiao and H. Yamamoto and Hang Yu and L. Zhang and M. Zucker and J. Zweizig}, journal={Nature}, year={2020}, volume={583}, pages={43-47} }

The measurement of minuscule forces and displacements with ever greater precision is inhibited by the Heisenberg uncertainty principle, which imposes a limit to the precision with which the position of an object can be measured continuously, known as the standard quantum limit 1 – 4 . When light is used as the probe, the standard quantum limit arises from the balance between the uncertainties of the photon radiation pressure applied to the object and of the photon number in the photoelectric… Expand

#### Paper Mentions

#### 31 Citations

Quantum Backaction on kg-Scale Mirrors: Observation of Radiation Pressure Noise in the Advanced Virgo Detector.

- Medicine, Physics
- Physical review letters
- 2020

Evidence of quantum radiation pressure noise in the Advanced Virgo gravitational wave detector is discussed and squeezed vacuum states of light are injected into the interferometer in order to manipulate the quantum backaction on the 42 kg mirrors and observe the corresponding quantum noise driven displacement at frequencies between 30 and 70 Hz. Expand

Demonstration of an amplitude filter cavity at gravitational-wave frequencies

- Physics
- 2020

Quantum vacuum fluctuations fundamentally limit the precision of optical measurements, such as those in gravitational-wave detectors. Injection of conventional squeezed vacuum can be used to reduce… Expand

Prospects for observing gravitational forces between nonclassical mechanical oscillators

- Physics
- 2020

Interfacing quantum mechanics and gravity is one of the great open questions in natural science. Micromechanical oscillators have been suggested as a plausible platform to carry out these… Expand

The Squeezed Light Source for the Advanced Virgo Detector in the Observation Run O3

- Physics
- 2020

From 1 April 2019 to 27 March 2020, the Advanced Virgo detector, together with the two Advanced LIGO detectors, conducted the third joint scientific observation run O3, aiming for further detections… Expand

Low phase noise squeezed vacuum for future generation gravitational wave detectors

- Physics
- 2020

Squeezed light has become a standard technique to enhance the sensitivity of gravitational wave detectors. Both optical losses and phase noise in the squeezed path can degrade the achievable… Expand

Quantum sensing with milligram scale optomechanical systems

- Mathematics, Physics
- 2020

Abstract Probing the boundary between classical and quantum mechanics has been one of the central themes in modern physics. Recently, experiments to precisely measure the force acting on milligram… Expand

Optimal quantum resource distribution in quantum dense metrology

- Physics
- 2020

Quantum entanglement can engineer the statical distribution of photons and then lead to the enhancement of measurement sensitivity. However, the generated entanglement couldn't be infinite. Quantum… Expand

Quantum fluctuations have been shown to affect macroscopic objects

- Physics, Medicine
- Nature
- 2020

A method has been reported that improves the precision of measurements made by gravitational-wave detectors beyond an intrinsic limit — and shows that quantum fluctuations can alter the position of… Expand

Adaptive Circuit Learning for Quantum Metrology

- Computer Science, Physics
- 2020

This work uses a circuit learning approach to search for encoder and decoder circuits that scalably improve sensitivity under given application and noise characteristics and demonstrates a 1.69x SNR improvement over the classical limit on a 5-qubit IBM quantum computer. Expand

Hilbert–Schmidt speed as an efficient figure of merit for quantum estimation of phase encoded into the initial state of open n-qubit systems

- Medicine
- Scientific reports
- 2021

It is found that, when both HSS and quantum Fisher information are calculated with respect to the phase parameter encoded into the initial state of an n-qubit register, the zeros of the HSS dynamics are actually equal to those of the QFI dynamics. Expand

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Quantum Backaction on kg-Scale Mirrors: Observation of Radiation Pressure Noise in the Advanced Virgo Detector.

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Evidence of quantum radiation pressure noise in the Advanced Virgo gravitational wave detector is discussed and squeezed vacuum states of light are injected into the interferometer in order to manipulate the quantum backaction on the 42 kg mirrors and observe the corresponding quantum noise driven displacement at frequencies between 30 and 70 Hz. Expand

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