Quantum backaction evading measurements of a silicon nitride membrane resonator
arXiv:2201.11041 · doi:10.1088/1367-2630/ac88ef
Abstract
Quantum backaction disturbs the measurement of the position of a mechanical oscillator by introducing additional fluctuations. In a quantum backaction measurement technique, the backaction can be evaded, although at the cost of losing part of the information. In this work, we carry out such a quantum backaction measurement using a large 0.5 mm diameter silicon nitride membrane oscillator with 707 kHz frequency, via a microwave cavity readout. The measurement shows that quantum backaction noise can be evaded in the quadrature measurement of the motion of a large object.
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Cited by in corpus (6)
- Degeneracy-breaking and Long-lived Multimode Microwave Electromechanical Systems Enabled by Cubic Silicon-Carbide Membrane Crystals
- Magnon-microwave backaction noise evasion in cavity magnomechanics
- Cavity Optomechanical Probe of Gravity Between Massive Mechanical Oscillators
- A Novel Architecture for room temperature microwave optomechanical experiments
- Amplitude Noise Cancellation of Microwave Tones
- Quantum speed limit as a sensitive probe of Planck-scale effects