Feedback control for quantum information processing (A11*)

面对与环境的相互作用，保持相干性对于可靠地操纵量子态和量子信息处理至关重要。实现这一目标的一个突出策略依赖于误差综合征的测量和随后的主动量子误差校正。这种纠错码通常依赖于投影综合症读出。在实践中，这种投影测量可能太困难或太耗时。在这个项目中，我们探索基于反馈的策略来实现这一目标，使用弱而不是投影测量，重点是拓扑量子计算和潜在的绝热量子动力学。

Maintaining coherence in the face of interactions with the environment is essential for reliably manipulating quantum states and thus quantum information processing. One prominent strategy towards this goal relies on the measurement of error syndromes and subsequent active quantum error correction. Such error correcting codes typically rely on projective syndrome readout. In practice, such projective measurements may be too difficult or too time consuming. In this project, we explore feedback-based strategies towards this goal which use weak rather than projective measurements, with a focus on topological quantum computation and the underlying adiabatic quantum dynamics.