Increasing energy relaxation time of superconducting qubits with nonmagnetic infrared filter and shield

• Published in: Chinese physics B Vol. 25; no. 5; pp. 457 - 460
• Main Author: 刘宇浩 李蒙蒙 兰栋 薛光明 谭新生 于海峰 于扬
• Format: Journal Article
• Language: English
• Published: 01.05.2016
• Subjects: Absorption; Infrared; Infrared filters; Microwaves; Qubits (quantum computing); Relaxation time; Shields; Superconductivity; 准粒子; 屏蔽; 滤波器; 红外辐射; 能量弛豫时间; 超导; 量子比特; 非磁性介质

One of the primary origins of the energy relaxation in superconducting qubits is the quasiparticle loss. The quasiparticles can be excited remarkably by infrared radiation. In order to minimize the density of quasiparticle and increase the qubit relaxation time, we design and fabricate the infrared...