公开(公告)号：US20250060774A1

公开(公告)日：2025-02-20

申请号：US18722121

申请日：2022-10-14

Applicant: Massachusetts Institute of Technology

Inventor： Charles ROQUES-CARMES ,  Marin SOLJACIC

IPC: G06E1/04

Abstract: Optical and electronic processors for calculating second-order and higher-order polynomials are described. A photonic processor can include an optical matrix multiplying unit OMMU that can perform vector-matrix multiplication. A portion of the inputs to the OMMU can be fed forward to combine with outputs from the OMMU when calculating polynomials. The described apparatus can also be used for probabilistic computing and polynomial combinatorial optimization.

公开(公告)号：US20220012619A1

公开(公告)日：2022-01-13

申请号：US17239830

申请日：2021-04-26

Applicant: Massachusetts Institute of Technology

Inventor： Charles ROQUES-CARMES ,  Yichen Shen ,  Li JING ,  Tena DUBCEK ,  Scott A. SKIRLO ,  Hengameh BAGHERIANLEMRASKI ,  Marin SOLJACIC

IPC: G06N10/00 ,  G06N3/04 ,  G06N7/00 ,  G06N3/08 ,  G06N3/067

Abstract: A photonic parallel network can be used to sample combinatorially hard distributions of Ising problems. The photonic parallel network, also called a photonic processor, finds the ground state of a general Ising problem and can probe critical behaviors of universality classes and their critical exponents. In addition to the attractive features of photonic networks—passivity, parallelization, high-speed and low-power—the photonic processor exploits dynamic noise that occurs during the detection process to find ground states more efficiently.

公开(公告)号：US20180287329A1

公开(公告)日：2018-10-04

申请号：US15944360

申请日：2018-04-03

Applicant: Massachusetts Institute of Technology

Inventor： Yi YANG ,  Aviram MASSUDA ,  Charles ROQUES-CARMES ,  Nicholas H. RIVERA ,  Tena DUBCEK ,  John D. JOANNOPOULOS ,  Karl Kimon BERGGREN ,  Ido E. KAMINER ,  Marin SOLJACIC ,  Yujia YANG ,  Steven E. KOOI ,  Phillip Donald Keathley

IPC: H01S3/09 ,  H01S3/101

Abstract: An apparatus for generating Smith-Purcell radiation having at least one spectral component at a wavelength A includes a periodic structure including a dielectric material and an electron source, in electromagnetic communication with the periodic structure, to emit an electron beam propagating within about 5λ from a surface of the periodic structure to induce emission of the Smith-Purcell radiation. The electron beam has an electron energy tunable between about 0.5 keV and about 40 keV so as to change a wavelength of the Smith-Purcell radiation.