固态电路QED系统中三模连续变量纠缠的实现

The Realization of Tripartite Continuous Variable Entanglement Generated in Solid-state Circuit QED

通过三个超导传输线谐振器与四能级超导量子比特相互耦合实现了固态电路QED系统中三模连续变量纠缠,并分析了四能级超导量子比特系统的能级跃迁与经典场的驱动和谐振器的耦合之间的关联.结果表明:采用绝热消除的方法可以在三个固态谐振器中实现三模连续变量纠缠,为多模连续变量纠缠研究提供了新途径.

The paper indicates that the tripartite continuous-variable entanglement could be realized in the solid-stated circuit through the interconnection between the energy transition of the four-level superconductor qubit system and the three superconducting transmission line resonators. Thus the correlation between the energy level transition of the four-level superconductor qubit system and the driving of classical fields and the coupling of resonators is analyzed. It turns out that an effective tripartite continuous-variable entanglement could be realized in the three solid-stated resonators via the application of the adiabatic eliminated method, besides, the research provides a new way to research the multipartite CV entanglement.