公开(公告)号：US20240419951A1

公开(公告)日：2024-12-19

申请号：US17973118

申请日：2022-10-25

Applicant: California Institute of Technology

Inventor： Gordon H.Y. Li ,  Ryoto Sekine ,  Rajveer Nehra ,  Robert M. Gray ,  Alireza Marandi

IPC: G06N3/048 ,  G06N3/067

Abstract: A device implementing a nonlinear activation function including a material having nonlinear susceptibility phase-matching a coherent nonlinear interaction involving a signal comprising a signal wavelength and a bias comprising a bias wavelength, so that (1) a first phase difference between the signal and the bias induces the interaction comprising second harmonic generation (generating a second harmonic of the bias wavelength) or sum frequency generation (generating a sum frequency of the bias and the signal, and (2) a second phase difference between the signal and the bias induces the interaction comprising parametric amplification amplifying the bias and attenuating the signal. A positive input to the nonlinear activation function is represented by the signal having an input energy and the first phase difference. A negative input is represented by second phase difference. The output is an output energy of the signal as function of the input energy.

公开(公告)号：US20240005196A1

公开(公告)日：2024-01-04

申请号：US18155444

申请日：2023-01-17

Applicant: California Institute of Technology

Inventor： Alireza Marandi ,  Rajveer Nehra ,  Ryoto Sekine ,  Luis M. Ledezma

IPC: G06N10/70 ,  G06N10/40

CPC classification number: G06N10/70 ,  G06N10/40

Abstract: A photonic integrated circuit comprising one or more waveguides comprising a second order non-linearity configured to operate on optical pulses each having a pulse length shorter than 1000 optical cycles, as measured at their full width at half maximum. The circuit is configured to generate one or more quantum states carried by one or more of the optical pulses, manipulate one or more of the quantum states, and/or measure one or more of the quantum states.