Improving optomechanical gyroscopes by coherent quantum noise cancellation processing

Li, Kai; Davuluri, Sankar; Li, Yong

doi:10.1007/s11433-018-9189-6

Cited by 25 publications

(14 citation statements)

References 31 publications

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“…Various strategies have been proposed for suppressing the BA noise effects to achieve an ultrasensitive measurement [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50][51][52][53]. Among them, coherent quantum noise cancella- * motazedifard.ali@gmail.com tion (CQNC) [54,55] is one of the most successful approaches of noise suppression which utilizes quantum interference.…”

Section: Introductionmentioning

confidence: 99%

Homodyne coherent quantum noise cancellation in a hybrid optomechanical force sensor

Allahverdi,

Motazedifard,

Dalafi

et al. 2022

Preprint

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In this paper, we propose an experimentally viable scheme to enhance the sensitivity of force detection in a hybrid optomechanical setup assisted with squeezed vacuum injection, beyond the standard quantum limit (SQL). The scheme is based on a combination of the coherent quantum noise cancellation (CQNC) strategy with a variational homodyne detection of the cavity output spectrum in which the phase of the local oscillator is optimized. In CQNC, realizing a negative-mass oscillator in the system leads to exact cancellation of the backaction noise from the mechanics due to destructive quantum interference. Squeezed vacuum injection enhances this cancellation and allows sub-SQL sensitivity to be reached in a wide frequency band and at much lower input laser powers. We show here that the adoption of variational homodyne readout enables us to enhance this noise cancellation up to 40 dB compared to the standard case of detection of the optical output phase quadrature, leading to a remarkable force sensitivity of the order of 10 −19 N/ √Hz, 2-order enhancement compared to the standard case. Moreover, we show that at nonzero cavity detuning, the signal response can be amplified at a level 3-to 5-times larger than that in the standard case without variational homodyne readout, improving the signal-to-noise-ratio (SNR).

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Section: Introductionmentioning

confidence: 99%

Homodyne coherent quantum noise cancellation in a hybrid optomechanical force sensor

Allahverdi,

Motazedifard,

Dalafi

et al. 2022

Preprint

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“…As highly sensitive rotation sensors, gyroscopes [67][68][69] are widely used in e.g. unmanned and autonomous vehicles and global navigation systems.…”

Section: Introductionmentioning

confidence: 99%

Anti-$\mathcal{PT}$-symmetric Kerr gyroscope

Zhang,

Peng,

et al. 2021

Preprint

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Non-Hermitian systems can exhibit unconventional spectral singularities called exceptional points (EPs). Various EP sensors have been fabricated in recent years, showing strong spectral responses to external signals. Here we propose how to achieve a nonlinear anti-parity-time (APT ) gyroscope by spinning an optical resonator. We show that, in the absence of any nonlinearity, the sensitivity or optical mode splitting of the linear device can be magnified up to 3 orders than that of the conventional device without EPs. Remarkably, the APT symmetry can be broken when including the Kerr nonlinearity of the materials and, as the result, the detection threshold can be significantly lowered, i.e., much weaker rotations which are well beyond the ability of a linear gyroscope can now be detected with the nonlinear device. Our work shows the powerful ability of APT gyroscopes in practice to achieve ultrasensitive rotation measurement.

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“…Optomechanical system with the coupling between a cavity field and a macroscopic mechanical oscillator provides us a perfect platform for testing the quantum properties of macroscopic objects, such as macroscopic entanglement, [ 1–8 ] macroscopic steering, [ 9–11 ] macroscopic superposition, [ 12–14 ] macroscopic state transfer, [ 15,16 ] and macroscopic mechanical squeezing. [ 17–23 ] Meanwhile, due to the connection of mechanical motion and cavity field, optomechanical system can be used for high‐precision measurements, for instance ultrasensitive force detection, [ 24–26 ] angular velocity detection, [ 27,28 ] small quantities of adsorbed mass detection, [ 29–31 ] and gravitational wave detection. [ 32–34 ] In the field of high‐precision measurements, optomechanical squeezing, that is, optical squeezing [ 35–38 ] or mechanical squeezing [ 39–41 ] can effectively improve the precision detection; therefore realizing the squeezing of mechanical mode in optomechanical system is significant for its potential applications.…”

Section: Introductionmentioning

confidence: 99%

Strong Squeezing of Duffing Oscillator in a Highly Dissipative Optomechanical Cavity System

Xiong

Chao

et al. 2020

Annalen der Physik

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In the conventional scheme of generating strong mechanical squeezing by the joint effect between mechanical parametric amplification and sideband cooling, the resolved sideband condition is required so as to overcome the quantum backaction heating. In the unresolved sideband regime, to suppress the quantum backaction, a (2) nonlinear medium is introduced to the cavity. The result shows that the quantum backaction heating effect caused by unwanted counter-rotating term can be completely removed. Hence, the strong mechanical squeezing can be obtained even for the system far from the resolved-sideband regime. IntroductionOptomechanical system with the coupling between a cavity field and a macroscopic mechanical oscillator provides us a perfect platform for testing the quantum properties of macroscopic objects, such as macroscopic entanglement, [1][2][3][4][5][6][7][8] macroscopic steering, [9][10][11] macroscopic superposition, [12][13][14] macroscopic state transfer, [15,16] and macroscopic mechanical squeezing. [17][18][19][20][21][22][23] Meanwhile, due to the connection of mechanical motion and cavity field, optomechanical system can be used for high-precision measurements, for instance ultrasensitive force detection, [24][25][26] angular velocity detection, [27,28] small quantities of adsorbed mass detection, [29][30][31] and gravitational wave detection. [32][33][34] In the field of high-precision measurements, optomechanical squeezing, that is, optical squeezing [35][36][37][38] or mechanical squeezing [39][40][41] can effectively improve the precision detection; therefore realizing the squeezing of mechanical mode in optomechanical system is significant for its potential applications.The basic method of generating mechanical squeezing is to introduce a parametric amplification to mechanical oscillator which can be obtained directly by two-phonon driving, [42,43] or indirectly by induced methods such as modulating the frequency of the mechanical oscillator [44] or the amplitude of driving field, [45] driving the cavity with two-tone fields, [46,47] employing the non-Marokovian bath of mechanical mode, [48] etc.Generally speaking, the stationary squeezing is restricted by 3 dB because of the instability caused by the parametric

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Improving optomechanical gyroscopes by coherent quantum noise cancellation processing

Cited by 25 publications

References 31 publications

Homodyne coherent quantum noise cancellation in a hybrid optomechanical force sensor

Homodyne coherent quantum noise cancellation in a hybrid optomechanical force sensor

Anti-$\mathcal{PT}$-symmetric Kerr gyroscope

Strong Squeezing of Duffing Oscillator in a Highly Dissipative Optomechanical Cavity System

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