Peano V, Schwefel H, Marquardt C, Marquardt F (2015)
Publication Type: Journal article
Publication year: 2015
Book Volume: 115
Article Number: 243603
Journal Issue: 24
DOI: 10.1103/PhysRevLett.115.243603
It has been predicted and experimentally demonstrated that by injecting squeezed light into an optomechanical device, it is possible to enhance the precision of a position measurement. Here, we present a fundamentally different approach where the squeezing is created directly inside the cavity by a nonlinear medium. Counterintuitively, the enhancement of the signal-to-noise ratio works by deamplifying precisely the quadrature that is sensitive to the mechanical motion without losing quantum information. This enhancement works for systems with a weak optomechanical coupling and/or strong mechanical damping. This can allow for larger mechanical bandwidth of quantum-limited detectors based on optomechanical devices. Our approach can be straightforwardly extended to quantum nondemolition qubit detection.
APA:
Peano, V., Schwefel, H., Marquardt, C., & Marquardt, F. (2015). Intracavity Squeezing Can Enhance Quantum-Limited Optomechanical Position Detection through Deamplification. Physical Review Letters, 115(24). https://doi.org/10.1103/PhysRevLett.115.243603
MLA:
Peano, Vittorio, et al. "Intracavity Squeezing Can Enhance Quantum-Limited Optomechanical Position Detection through Deamplification." Physical Review Letters 115.24 (2015).
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