| Literature DB >> 29219573 |
Atsushi Noguchi1,2, Rekishu Yamazaki1,2, Yutaka Tabuchi1, Yasunobu Nakamura1,3.
Abstract
We demonstrate ultrasensitive measurement of fluctuations in a surface-acoustic-wave (SAW) resonator using a hybrid quantum system consisting of the SAW resonator, a microwave (MW) resonator, and a superconducting qubit. The nonlinearity of the driven qubit induces parametric coupling, which up-converts the excitation in the SAW resonator to that in the MW resonator. Thermal fluctuations of the SAW resonator near the quantum limit are observed in the noise spectroscopy in the MW domain.Year: 2017 PMID: 29219573 DOI: 10.1103/PhysRevLett.119.180505
Source DB: PubMed Journal: Phys Rev Lett ISSN: 0031-9007 Impact factor: 9.161