Sparkes B M, Chrzanowski H M, Parrain D P, Buchler B C, Lam P K, Symul T
Centre for Quantum Computation and Communication Technology, Department of Quantum Science, Research School of Physics and Engineering, The Australian National University, Canberra, ACT 0200, Australia.
Rev Sci Instrum. 2011 Jul;82(7):075113. doi: 10.1063/1.3610455.
Digital control of optics experiments has many advantages over analog control systems, specifically in terms of the scalability, cost, flexibility, and the integration of system information into one location. We present a digital control system, freely available for download online, specifically designed for quantum optics experiments that allows for automatic and sequential re-locking of optical components. We show how the inbuilt locking analysis tools, including a white-noise network analyzer, can be used to help optimize individual locks, and verify the long term stability of the digital system. Finally, we present an example of the benefits of digital locking for quantum optics by applying the code to a specific experiment used to characterize optical Schrödinger cat states.
与模拟控制系统相比，光学实验的数字控制具有许多优势，特别是在可扩展性、成本、灵活性以及将系统信息集成到一个位置方面。我们展示了一个可在线免费下载的数字控制系统，它是专门为量子光学实验设计的，能够实现光学元件的自动和顺序重新锁定。我们展示了如何使用内置的锁定分析工具，包括白噪声网络分析仪，来帮助优化各个锁定，并验证数字系统的长期稳定性。最后，我们通过将该代码应用于一个用于表征光学薛定谔猫态的特定实验，给出了数字锁定对量子光学有益的一个例子。
