All-optical coherent quantum-noise cancellation in cascaded optomechanical systems

Schweer, Jakob; Steinmeyer, D.; Hammerer, Klemens; Heurs, M.

doi:10.1103/physreva.106.033520

Cited by 2 publications

(1 citation statement)

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“…Another approach for obtaining the sub-SQL is based on the CQNC of the back-action noise through quantum interference. In this approach, an anti-noise path in the system is introduced through the addition of an ancillary oscillator which manifests an equal and opposite response to the light field, and it cancels the backaction noise [76][77][78]. So, the CQNC scheme can delete the backaction noise induced due to the radiation pressure at all frequencies and surpass the SQL [79,80].…”

Section: Introductionmentioning

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: Introductionmentioning

confidence: 99%