A parametric symmetry breaking transducer

Abstract

Force detectors rely on resonators to transduce forces into a readable signal. Usually these resonators operate in the linear regime and their signal appears amidst a competing background comprising thermal or quantum fluctuations as well as readout noise. Here, we demonstrate that a parametric symmetry breaking transduction leads to a novel and robust nonlinear force detection in the presence of noise. The force signal is encoded in the frequency at which the system jumps between two phase states which are inherently protected against phase noise. Consequently, the transduction effectively decouples from readout noise channels. For a controlled demonstration of the method, we experiment with a macroscopic doubly-clamped string. Our method provides a promising new paradigm for high-precision force detection.

arXiv comment7 pages, 5 figures

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• Classical many-body time crystals
• Distinctive class of dissipation-induced phase transitions and their universal characteristics
• Force sensing with nanowire cantilevers
• Observation of first- and second-order dissipative phase transitions in a two-photon driven Kerr resonator
• Gate-controlled phase switching in a Parametron
• Deterministic and stochastic sampling of two coupled Kerr parametric oscillators
• Energy Transfer into Period-Tripled States in Coupled Electromechanical Modes at Internal Resonance
• Extracting the lifetime of a synthetic two-level system
• Strong Phonon-Cavity Coupling and Parametric Interaction in a Single Microcantilever under Ambient Conditions
• Proliferation of unstable states and their impact on stochastic out-of-equilibrium dynamics
• Floquet expansion by counting pump photons
• The effects of nonlinear damping on degenerate parametric amplification