Abstract

The article studies the attenuation of vacuum Rabi oscillations for a system of two superconducting solid-state qubits placed in a high-Q microwave cavity. Two different cases are considered in which: 1) the first qubit is excited at the initial time and 2) the initial state comprises an entangled symmetric and antisymmetric pair of states. The dependence of the attenuation on various parameters, primarily on the coupling constant between qubits and the field and on the distance between qubits, is studied in detail. It is shown that, for some parameters, the relaxation time of the excited state of a qubit in such a system is significantly longer than that of a single qubit in the cavity.

中文翻译：

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高Q腔中两量子位结构中真空Rabi振荡的阻尼

摘要

本文研究了放置在高Q微波腔中的两个超导固态量子位系统的真空Rabi振荡衰减。考虑了两种不同的情况，其中：1）第一个量子比特在初始时间被激发，以及2）初始状态包括一对对称的对称和反对称的纠缠状态。详细研究了衰减对各种参数的依赖性，主要取决于量子位与场之间的耦合常数以及量子位之间的距离。结果表明，对于某些参数，在这样的系统中，量子位的激发态的弛豫时间明显比腔中单个量子位的弛豫时间长。