Force Sensing in an Optomechanical System with Feedback-Controlled In-Loop Light

Bemani, F.; Černotík, Ondřej; Ruppert, László; Vitali, David; Filip, Radim

doi:10.1103/physrevapplied.17.034020

Cited by 22 publications

(11 citation statements)

References 53 publications

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“…Furthermore, this hybrid optomechanical system contains an ensemble of N number of two-level ultracold atoms trapped inside it and interacts non-resonantly with the intracavity field and a classical control field. For a sufficiently large value of N, this trapped atomic ensemble behaves effectively as a negative-mass oscillator (NMO) [92,93,[96][97][98][99]. The cavity mode is also coherently driven by a classical field of frequency, ω L ,; input power, P L ; and wavelength, λ L .…”

Section: The Model Hamiltonianmentioning

confidence: 99%

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

et al. 2023

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The weak force sensing based on a coherent quantum noise cancellation (CQNC) scheme is presented in a hybrid cavity optomechanical system containing a trapped ensemble of ultracold atoms and an optical parametric amplifier (OPA). In the proposed system, the back-action noise can be completely eliminated at all frequencies and through the proper choice of the OPA parameters, and the noise spectral density can also be reduced at lower frequencies. This leads to a significant enhancement in the sensitivity of the cavity optomechanical weak force sensor, and the noise spectral density also surpasses the standard quantum limit (SQL) even for the small input power at the lower detection frequency. Furthermore, the experimental feasibility of this scheme is also briefly discussed. This study can be used for the realization of a force sensor based on hybrid cavity optomechanical systems and for the coherent quantum control in macroscopic systems.

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Section: The Model Hamiltonianmentioning

confidence: 99%

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

et al. 2023

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“…A variety of experiments explore mechanical resonators of different masses and sizes. The properties of these systems and their ability to interact with external systems allow conceptually different applications ranging from gravitational wave sensing [3], compact sensors of various external stimuli [4][5][6][7][8], and stochastic heat engines [9][10][11][12], to quantum mechanical entanglement [13][14][15] or photon-phonon transducers in quantum networks [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…The vibrational modes supported by a structure can be complex, depending on the structure's geometry, and can be fundamentally understood in the context of the theory of elasticity to form a collection of normal modes. This multimodeness can be a limitation in feedback cooling experiments where the signal of an optical mode whose phase is sensitive to mechanical motion is used to produce a negative feedback on the oscillator to damp its motion [8,20,[34][35][36][37]. Likewise, besides specific advantageous situations where the ratio of mechanical modes' frequencies is integer [23], it limits the ability of a pulsed position measurement to estimate one quadrature of a single mechanical resonator while evading backaction, as any instantaneous measurement probes all modes at once [21,22].…”

Section: Introductionmentioning

confidence: 99%

Nanomechanical Design Strategy for Single-Mode Optomechanical Measurement

La Gala,

Mathew,

Neveu

et al. 2022

Preprint

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The motion of a mechanical resonator is intrinsically decomposed over a collection of normal modes of vibration. When the resonator is used as a sensor, its multimode nature often deteriorates or limits its performance and sensitivity. This challenge is frequently encountered in state-of-the-art optomechanical sensing platforms. We present a mechanical design strategy that ensures that optomechanical measurements can retrieve information on a single mechanical degree of freedom, and implement it in a sliced photonic crystal nanobeam resonator. A spectral design approach is used to make mechanical symmetries robust against practical disorder. The effectiveness of the method is evaluated by deriving a relevant figure of merit for continuous and pulsed measurement application scenarios. The method can be employed in any mechanical design that presents unwanted spurious mechanical modes. In the nanobeam platform, we experimentally show an increase of the signal to noise ratio of the mode of interest over the first spurious mode by four orders of magnitudes.

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Section: Introductionmentioning

confidence: 99%

“…Quantum optical interferometers exploit the interference between a probe and a reference beam to detect weak signals [10], a prominent example being the detection of gravitational waves from black hole mergers [11,12]. A similar approach can be adopted for microwave traveling waves [13], microwave cavity fields [14], matter waves [15,16], between light and atomic ensembles [17,18], and optomechanics [19][20][21].Numerous sensing proposals use quantum non-Gaussian states as probes for improved estimation of phase and displacement [22][23][24]. For example, quantum displacement sensing has been performed with Fock states and non-Gaussian superpositions of Fock states of the phononic modes of trapped ions [25,26].…”

mentioning

confidence: 99%

Quantum Rabi interferometry of motion and radiation

Park¹,

Hastrup²,

Marek³

et al. 2022

Preprint

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The precise determination of a displacement of a mechanical oscillator or a microwave field in a predetermined direction in phase space can be carried out with trapped ions or superconducting circuits, respectively, by coupling the oscillator with ancilla qubits. Through that coupling, the displacement information is transferred to the qubits which are then subsequently read out. However, unambiguous estimation of displacement in an unknown direction in the phase space has not been attempted in such oscillator-qubit systems. Here, we propose a hybrid oscillator-qubit interferometric setup for the unambiguous estimation of phase space displacements in an arbitrary direction, based on feasible Rabi interactions beyond the rotating-wave approximation. Using such a hybrid Rabi interferometer for quantum sensing, we show that the performance is superior to the ones attained by single-mode estimation schemes and a conventional interferometer based on Jaynes-Cummings interactions. Moreover, we find that the sensitivity of the Rabi interferometer is independent of the thermal occupation of the oscillator mode, and thus cooling it to the ground state before sensing is not required. We also perform a thorough investigation of the effect of qubit dephasing and oscillator thermalization. We find the interferometer to be fairly robust, outperforming different benchmark estimation schemes even for large dephasing and thermalization. I. INTRODUCTIONQuantum sensing is about estimating unknown processes of interest using a finite ensemble of probes and detectors with a sensitivity that goes beyond the reach of classical sensing [1-5]. Historically, optical probes have been at the center of this field due to the experimental accessibility of lasers and non-classical light resources, high-efficiency detectors, and the strong robustness of light to external noise sources [6][7][8][9]. Quantum optical interferometers exploit the interference between a probe and a reference beam to detect weak signals [10], a prominent example being the detection of gravitational waves from black hole mergers [11,12]. A similar approach can be adopted for microwave traveling waves [13], microwave cavity fields [14], matter waves [15,16], between light and atomic ensembles [17,18], and optomechanics [19][20][21].Numerous sensing proposals use quantum non-Gaussian states as probes for improved estimation of phase and displacement [22][23][24]. For example, quantum displacement sensing has been performed with Fock states and non-Gaussian superpositions of Fock states of the phononic modes of trapped ions [25,26]. Similarly, for superconducting circuits, the preparation of microwave Fock states and their superpositions has been recently mastered [27][28][29][30] as well as the preparation of non-Gaussian acoustic modes of a quartz crystal [31], which can be also used for measuring displacements. Superconducting transmon has been recently used for sensing magnons [32][33][34], search for dark matter [35], microwave radiometry [36][37][38] including sensing...

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Force Sensing in an Optomechanical System with Feedback-Controlled In-Loop Light

Cited by 22 publications

References 53 publications

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

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

Nanomechanical Design Strategy for Single-Mode Optomechanical Measurement

Quantum Rabi interferometry of motion and radiation

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