论文标题
具有定期驱动相互作用量子的时间分子
Time molecules with periodically driven interacting qubits
论文作者
论文摘要
我们提供了时间量子力学干扰现象的数值证据：时间分子（TM）。在两个相互作用的量子位的动力学中观察到各种此类频镜状态，但具有$ t $ $ t $的周期性序列。 TMS定期出现，持续时间很大，$ΔT_\ MATHRM {TM} \ GG T $。所有TMS均显示总偏振的值几乎为零，并且纠缠熵$ s $的强大增强为相应的钟状状态的最大值$ s = \ ln 2 $。 TMS是由Floquet特征值和最大纠缠的Floquet Eigenstates的存在产生的。 TMS与已有的系统参数保持稳定，并增加了Qubit数量的数量。可以在微波实验中观察到TMS，并具有一系列超导Qubit的阵列。
We provide numerical evidence for a temporal quantum-mechanical interference phenomenon: time molecules (TM). A variety of such stroboscopic states are observed in the dynamics of two interacting qubits subject to a periodic sequence of $π$-pulses with the period $T$. The TMs appear periodically in time and have a large duration, $δt_\mathrm{TM} \gg T$. All TMs demonstrate an almost zero value of the total polarization and a strong enhancement of the entanglement entropy $S$ up to the maximum value $S=\ln 2$ of a corresponding Bell state. The TMs are generated by the commensurability of the Floquet eigenvalues and the presence of maximally entangled Floquet eigenstates. The TMs remain stable with detuned system parameters and with an increased number of qubits. The TMs can be observed in microwave experiments with an array of superconducting qubits.
