论文标题
在有通量和电荷噪声的情况下进行多级谐振隧道
Multilevel resonant tunneling in the presence of flux and charge noise
论文作者
论文摘要
通量量子位中的宏观共振隧道（MRT）是提取有关量子周围环境产生的噪声信息的重要实验工具。在这里，我们提出了RF-squid通量Qubit中MRT信号的详细推导，从而允许通量的影响和电荷波动对系统中的Interwell和Intrawell转变。考虑到目标井中的初始井和激发状态的基态之间的过渡，使我们能够表征磁通量和电荷噪声源，影响磁通量的运行。 MRT峰是由影响特定过渡的主要噪声源形成的，磁通噪声决定了地面的线形至地面隧道，而电荷噪声则表明自己是将地面扩大到激发峰的额外扩展。
Macroscopic resonant tunneling (MRT) in flux qubits is an important experimental tool for extracting information about noise produced by a qubit's surroundings. Here we present a detailed derivation of the MRT signal in the RF-SQUID flux qubit allowing for effects of flux and charge fluctuations on the interwell and intrawell transitions in the system. Taking into consideration transitions between the ground state in the initial well and excited states in the target well enable us to characterize both flux and charge noise source affecting the operation of the flux qubit. The MRT peak is formed by the dominant noise source affecting specific transition, with flux noise determining the lineshape of the ground to ground tunneling, whereas charge noise reveals itself as additional broadening of the ground to excited peak.
