Nonlinear coupling and squeezing in solid-state quantum circuits
Jian Zhou, Dan-Wei Zhang, Man-Lv Peng, Zheng‐Yuan Xue · Journal of Modern Optics · 2013
We propose an attractive realization of nonlinear coupling of superconducting charge qubit coupled to a transmission-line resonator. Our scheme provides a new approach to produce the strong squeezing effect via a flexible design of the superconducting qubit and mature experimental setup of circuit QED. By properly tuning the external magnetic flux, considerable squeezing can be generated. Strong coupling strength, immunity to noises and suppression of spontaneous emission make our scheme more robust and may be realized with conservative experimental parameters.