公开(公告)号：US11237454B2

公开(公告)日：2022-02-01

申请号：US16680908

申请日：2019-11-12

申请人： Massachusetts Institute of Technology

发明人： Jacques Johannes Carolan ,  Uttara Chakraborty ,  Nicholas C. Harris ,  Mihir Pant ,  Dirk Robert Englund

IPC分类号： H01S3/094 ,  G02F1/35 ,  H01S3/08 ,  H01S3/13 ,  H01S3/067 ,  H01S3/23 ,  G02F1/355 ,  G02F1/365 ,  H01S3/083 ,  H01S3/16

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

公开(公告)号：US20180314131A1

公开(公告)日：2018-11-01

申请号：US15792066

申请日：2017-10-24

申请人： Massachusetts Institute of Technology

发明人： Mihir Pant ,  Dirk Robert ENGLUND ,  Mikkel HEUCK

IPC分类号： G02F1/31 ,  H04B10/70 ,  G02F1/39 ,  G02F1/35

CPC分类号： G02F1/31 ,  G02F1/3501 ,  G02F1/3536 ,  G02F1/39 ,  G02F2001/3503 ,  H04B10/70

摘要： A photon source to deliver single photons includes a storage ring resonator to receive pump photons and generate a signal photon and an idler photon. An idler resonator is coupled to the storage resonator to couple the idler photon out of the storage resonator and into a detector. Detection of the idler photon stops the pump photons from entering the storage resonator. A signal resonator is coupled to the storage resonator to couple out the signal photon remaining in the storage resonator and delivers the signal photon to applications. The photon source can be fabricated into a photonic integrated circuit to achieve high compactness, reliability, and controllability.

公开(公告)号：US10429718B2

公开(公告)日：2019-10-01

申请号：US15792066

申请日：2017-10-24

申请人： Massachusetts Institute of Technology

发明人： Mihir Pant ,  Dirk Robert Englund ,  Mikkel Heuck

IPC分类号： G02F1/31 ,  G02F1/39 ,  H04B10/70 ,  G02F1/35

摘要： A photon source to deliver single photons includes a storage ring resonator to receive pump photons and generate a signal photon and an idler photon. An idler resonator is coupled to the storage resonator to couple the idler photon out of the storage resonator and into a detector. Detection of the idler photon stops the pump photons from entering the storage resonator. A signal resonator is coupled to the storage resonator to couple out the signal photon remaining in the storage resonator and delivers the signal photon to applications. The photon source can be fabricated into a photonic integrated circuit to achieve high compactness, reliability, and controllability.