论文标题
超导Qubit的热纠缠，以进行任意相互作用强度
Thermal entanglement of superconducting qubits for arbitrary interaction strength
论文作者
论文摘要
我们研究了两个超导量子位的热纠缠，以实现任意相互作用强度和基态频率。我们计算系统的同时量化热纠缠。我们建议一种方案，其中两个超导量子盘之间的外部可调耦合器量子数框会产生纠缠。分析了三种不同情况的并发行为，在这种情况下，我们考虑温度的影响，Qubit Qubit有效耦合强度以及量子频率对热纠缠的影响。这里值得一提的是，要实现最大的纠缠状态，最好使用两个具有相同频率的超导量子台。我们还注意到，对于给定的温度，可以通过固定的内部电容和电感来调节热纠缠。
We investigate the thermal entanglement in two superconducting qubits for arbitrary interaction strength and ground state frequencies. We calculate the concurrence of the system to quantify the thermal entanglement. We suggest a scheme, where an external tunable coupler qubit sandwich between two superconducting qubits generates entanglement. The behavior of concurrence is analyzed for three different cases, in which we consider the effects of the temperature, the qubit-qubit effective coupling strength, and the qubit frequencies on the thermal entanglement. What deserves mentioning here is that to achieve maximally entangled states, it is better to use two superconducting qubits with the same frequencies. We also note that for a given temperature, the thermal entanglement can be tuned by qubit internal capacitance and inductance.
