中文摘要：

在20mK极低温下,测量了超导磁通量子比特的环流方向,并测到量子比特（qubit）信号.通过改变磁通量子比特的势垒高度,得到qubit信号强度随势垒高度的变化的实验数据并建立理论模型解释了实验现象.

英文摘要：

At the extremely low temperature of 20mK,We measured the superconducting flux qubit loop current with DC-SQUID,and find the qubit signal.Then we changed the barrier bias voltage of the flux qubit and did measurements with each barrier height to get the relationship between flux qubit signal magnitude and the barrier bias voltage.We also build up a theory model to explain the Experimental phenomena.