节点文献
Macroscopic resonant tunneling in an rf-SQUID flux qubit
【摘要】 We have observed the macroscopic resonant tunneling of magnetic flux between macroscopically distinct quantum states in a superconducting flux qubit.The dependences of the macroscopic resonant tunneling on the barrier height of the potential well,the flux bias and the initial state are investigated.Detailed measurements of the tunneling rate as a function of the flux bias reveal the feature of the quantum noise in the superconducting flux qubit.
【Abstract】 We have observed the macroscopic resonant tunneling of magnetic flux between macroscopically distinct quantum states in a superconducting flux qubit.The dependences of the macroscopic resonant tunneling on the barrier height of the potential well,the flux bias and the initial state are investigated.Detailed measurements of the tunneling rate as a function of the flux bias reveal the feature of the quantum noise in the superconducting flux qubit.
【Key words】 rf-SQUID; macroscopic resonant tunneling; quantum noise; flux qubit;
- 【文献出处】 Chinese Physics B ,中国物理B , 编辑部邮箱 ,2011年05期
- 【分类号】O469
- 【被引频次】1
- 【下载频次】37