公开(公告)号：US20200150511A1

公开(公告)日：2020-05-14

申请号：US16680908

申请日：2019-11-12

申请人： Jacques Johannes Carolan ,  Uttara Chakraborty ,  Nicholas C. HARRIS ,  Mihir PANT ,  Dirk Robert ENGLUND

发明人： Jacques Johannes Carolan ,  Uttara Chakraborty ,  Nicholas C. HARRIS ,  Mihir PANT ,  Dirk Robert ENGLUND

IPC分类号： G02F1/35 ,  H01S3/083 ,  H01S3/094 ,  H01S3/08 ,  H01S3/13 ,  H01S3/067 ,  H01S3/23 ,  G02F1/355 ,  G02F1/365

摘要： Typically, quantum systems are very sensitive to environmental fluctuations, and diagnosing errors via measurements causes unavoidable perturbations. Here, an in situ frequency-locking technique monitors and corrects frequency variations in single-photon sources based on resonators. By using the classical laser fields used for photon generation as probes to diagnose variations in the resonator frequency, the system applies feedback control to correct photon frequency errors in parallel to the optical quantum computation without disturbing the physical qubit. Our technique can be implemented on a silicon photonic device and with sub 1 pm frequency stabilization in the presence of applied environmental noise, corresponding to a fractional frequency drift of