Yin Zelong, Li Chunzhen, Allcock Jonathan, Zheng Yicong, Gu Xiu, Dai Maochun, Zhang Shengyu, An Shuoming
Tencent Quantum Laboratory, Tencent, 518057, Shenzhen, Guangdong, China.
Nat Commun. 2022 Jan 10;13(1):188. doi: 10.1038/s41467-021-27900-6.
Shortcuts to adiabaticity are powerful quantum control methods, allowing quick evolution into target states of otherwise slow adiabatic dynamics. Such methods have widespread applications in quantum technologies, and various shortcuts to adiabaticity protocols have been demonstrated in closed systems. However, realizing shortcuts to adiabaticity for open quantum systems has presented a challenge due to the complex controls in existing proposals. Here, we present the experimental demonstration of shortcuts to adiabaticity for open quantum systems, using a superconducting circuit quantum electrodynamics system. By applying a counterdiabatic driving pulse, we reduce the adiabatic evolution time of a single lossy mode from 800 ns to 100 ns. In addition, we propose and implement an optimal control protocol to achieve fast and qubit-unconditional equilibrium of multiple lossy modes. Our results pave the way for precise time-domain control of open quantum systems and have potential applications in designing fast open-system protocols of physical and interdisciplinary interest, such as accelerating bioengineering and chemical reaction dynamics.
绝热捷径是强大的量子控制方法，能使原本缓慢的绝热动力学快速演化为目标态。此类方法在量子技术中有着广泛应用，并且在封闭系统中已证明了各种绝热捷径协议。然而，由于现有方案中的复杂控制，实现开放量子系统的绝热捷径面临挑战。在此，我们展示了使用超导电路量子电动力学系统实现开放量子系统绝热捷径的实验。通过施加反绝热驱动脉冲，我们将单个有损模式的绝热演化时间从800纳秒减少到100纳秒。此外，我们提出并实施了一种最优控制协议，以实现多个有损模式的快速且与量子比特无关的平衡。我们的结果为开放量子系统的精确时域控制铺平了道路，并且在设计具有物理和跨学科意义的快速开放系统协议方面具有潜在应用，例如加速生物工程和化学反应动力学。
