公开(公告)号：US10126506B2

公开(公告)日：2018-11-13

申请号：US15486088

申请日：2017-04-12

Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY

Inventor： Jacob C. Mower ,  Jelena Notaros ,  Mikkel Heuck ,  Dirk Robert Englund ,  Cosmo Lupo ,  Seth Lloyd

IPC: H04B10/40 ,  G02B6/293 ,  G02F1/225 ,  G02F1/21

Abstract: A large-scale tunable-coupling ring array includes an input waveguide coupled to multiple ring resonators, each of which has a distinct resonant wavelength. The collective effect of these multiple ring resonators is to impart a distinct time delay to a distinct wavelength component (or frequency component) in an input signal, thereby carrying out quantum scrambling of the input signal. The scrambled signal is received by a receiver also using a large-scale tunable-coupling ring array. This receiver-end ring resonator array recovers the input signal by imparting a compensatory time delay to each wavelength component. Each ring resonator can be coupled to the input waveguide via a corresponding Mach Zehnder interferometer (MZI). The MZI includes a phase shifter on at least one of its arms to increase the tunability of the ring array.