Weak-force sensing with squeezed optomechanics

Zhao, Wen; Zhang, Sheng-Dian; Miranowicz, Adam; Jing, Hui

doi:10.1007/s11433-019-9451-3

Cited by 68 publications

(29 citation statements)

References 102 publications

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“…Hamiltonian of the optomechanical system (OMS), Hamiltonian of the OPA [37], Hamiltonian of the atomic ensemble, and the Hamiltonian of the laser driving field [42] can be written as the following expressions: and…”

Section: Hybrid Optomechanical System and Modelmentioning

confidence: 99%

“…At the same time, the low-frequency sensitivity was remained unchanged. On the other hand, as mentioned in section I, Zhao et al [37] investigated weak-force sensing in a squeezed cavity and theoretically showed that the SQL could be suppressed at frequencies below the mechanical resonance; however, the back-action noise remained unchanged in the system.…”

Section: Force Sensing and Cqncmentioning

confidence: 99%

“…In the normal optomechanical system, the noise spectral density of the SQL represented by Eq. ( 45) can be reached to the minimum point at g SQL = √ κ/(2 |χ m |), whereas this point in the normal system can be lowered by using the OPA pump with gain G, which gives g θ=0 SQ = |κ − 4G|/(2 κ|χ m |) [37]. The CQNC scheme cancels the back-action noise.…”

Section: Force Sensing and Cqncmentioning

confidence: 99%

“…[24,25], the coupling between the optomechanical cavity and the atomic ensemble is necessary for the CQNC process. On the other hand, tuning the OPA parameters can improve the precision of force sensing and reach the sub-SQL sensitivity at small values of the optomechanical coupling without losing quantum efficiency [37]. The rest of the present paper is organized as follows.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Enhanced weak force sensing through atom-based coherent noise cancellation in a hybrid cavity optomechanical system

Singh¹,

Mazaheri²,

Peng³

et al. 2022

Preprint

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We investigate weak force sensing based on coherent quantum noise cancellation in a nonlinear hybrid optomechanical system. The optomechanical cavity contains a moveable mechanical mirror, a fixed semitransparent mirror, an ensemble of ultracold atoms, and an optical parametric amplifier (OPA). Using the coherent quantum noise cancellation (CQNC) process, one can eliminate the back action noise at all frequencies. Also by tuning the OPA parameters, one can suppress the quantum shot-noise at lower frequencies than the resonant frequency. In the CQNC scheme, the damping rate of the mechanical oscillator matches the damping rate of the atomic ensemble, which is experimentally achievable even for a low-frequency mechanical oscillator with a high-quality factor. Elimination of the back action noise and suppression of the shot noise significantly enhance force sensing and thus overcome the standard quantum limit of weak force sensing. This hybrid scheme can play an essential role in the realization of quantum optomechanical sensors and quantum control.

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Section: Hybrid Optomechanical System and Modelmentioning

confidence: 99%

Section: Force Sensing and Cqncmentioning

confidence: 99%

Section: Force Sensing and Cqncmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Enhanced weak force sensing through atom-based coherent noise cancellation in a hybrid cavity optomechanical system

Singh¹,

Mazaheri²,

Peng³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…[ 53 ] Optical forces give rise to the interaction between light and mechanical resonators, [ 54 ] which has recently formed a booming research field named optomechanics, with huge potential for quantum information processing, [ 55 ] as well as high‐precision sensing and measurement. [ 56–60 ]…”

Section: Introductionmentioning

confidence: 99%

Optical Forces: From Fundamental to Biological Applications

et al. 2020

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Optical forces, generally arising from changes of field gradients or linear momentum carried by photons, form the basis for optical trapping and manipulation. Advances in optical forces help to reveal the nature of light–matter interactions, giving answers to a wide range of questions and solving problems across various disciplines, and are still yielding new insights in many exciting sciences, particularly in the fields of biological technology, material applications, and quantum sciences. This review focuses on recent advances in optical forces, ranging from fundamentals to applications for biological exploration. First, the basics of different types of optical forces with new light–matter interaction mechanisms and near‐field techniques for optical force generation beyond the diffraction limit with nanometer accuracy are described. Optical forces for biological applications from in vitro to in vivo are then reviewed. Applications from individual manipulation to multiple assembly into functional biophotonic probes and soft‐matter superstructures are discussed. At the end future directions for application of optical forces for biological exploration are provided.

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Backaction Evading and Amplification of Weak Force Signal in an Optomechanical System

et al. 2022

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A scheme of backaction evading and amplification of weak force signal is presented in an optomechanical system. By introducing the frequency modulation of the cavity field, the system can achieve the quantum nondemolition measurement interaction so that the backaction evading can be reached. With the help of the mechanical squeezing, the weak force signal can be amplified, which equals to amplifying the mechanical response function, reducing additional noise as well as thermal noise of mechanical oscillator. The current scheme opens up an alternative method for simultaneously surpassing the standard quantum limit and enhancing the mechanical response, and also reducing the mechanical thermal noise.

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Weak-force sensing with squeezed optomechanics

Cited by 68 publications

References 102 publications

Enhanced weak force sensing through atom-based coherent noise cancellation in a hybrid cavity optomechanical system

Enhanced weak force sensing through atom-based coherent noise cancellation in a hybrid cavity optomechanical system

Optical Forces: From Fundamental to Biological Applications

Backaction Evading and Amplification of Weak Force Signal in an Optomechanical System

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