Document Type
Article
Publication Date
8-28-2007
Publication Title
Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
Department
Department of Physics and Astronomy
Abstract
We study a configuration for displacement detection consisting of a nanomechanical resonator coupled to both a radio frequency superconducting interference device and to a superconducting stripline resonator. We employ an adiabatic approximation and rotating wave approximation and calculate the displacement sensitivity. We study the performance of such a displacement detector when the stripline resonator is driven into a region of nonlinear oscillations. In this region the system exhibits noise squeezing in the output signal when homodyne detection is employed for readout. We show that displacement sensitivity of the device in this region may exceed the upper bound imposed upon the sensitivity when operating in the linear region. On the other hand, we find that the high displacement sensitivity is accompanied by a slowing down of the response of the system, resulting in a limited bandwidth.
DOI
10.1103/PhysRevE.76.026217
Original Citation
Buks E, Zaitsev S, Segev E, Abdo B, Blencowe MP. Displacement detection with a vibrating rf superconducting interference device: beating the standard linear limit. Phys Rev E Stat Nonlin Soft Matter Phys. 2007 Aug;76(2 Pt 2):026217. doi: 10.1103/PhysRevE.76.026217. Epub 2007 Aug 28. PMID: 17930131.
Dartmouth Digital Commons Citation
Buks, Eyal; Zaitsev, Stav; Segev, Eran; Abdo, Baleegh; and Blencowe, M. P., "Displacement Detection with A Vibrating Rf Superconducting Interference Device: Beating the Standard Linear Limit" (2007). Dartmouth Scholarship. 1992.
https://digitalcommons.dartmouth.edu/facoa/1992
