Patent ID: 11929788
Assignee: INSTITUTE OF SEMICONDUCTORS, CHINESE ACADEMY OF SCIENCES
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 12:
13. A method of solving a combinatorial optimization problem based on the microwave photonic Ising machine of claim 1, comprising:
generating an optical signal by a laser light source, inputting the optical signal to a storage, correlation and photoelectric conversion module through a phase and electro-optical conversion module, converting the optical signal into an electrical signal and inputting the electrical signal to the phase and electro-optical conversion module, so as to cause an oscillation of a closed loop;
generating a microwave pulse signal by a microwave pulse local oscillator source, and converting, by the phase and electro-optical conversion module, the microwave pulse signal, the optical signal and the electrical signal into a phase-random two-phase microwave pulse spin optical signal, wherein
the phase-random two-phase microwave pulse spin optical signal is stored and correlated by the storage, correlation and photoelectric conversion module to generate a phase-specific two-phase microwave pulse spin optical signal, and the phase-specific two-phase microwave pulse spin optical signal is converted into a phase-specific two-phase microwave pulse spin electrical signal; or
the phase-random two-phase microwave pulse spin optical signal is converted into a phase-random two-phase microwave pulse spin electrical signal, and the phase-random two-phase microwave pulse spin electrical signal is correlated to generate a phase-specific two-phase microwave pulse spin electric signal; and
outputting the phase-specific two-phase microwave pulse spin electrical signal to the phase and electro-optical conversion module so as to form a closed microwave photonic loop, wherein a gain of the microwave photonic loop is gradually increased so that the phase-random two-phase microwave pulse spin optical signal or the phase-random two-phase microwave pulse spin electrical signal reaches a specific distribution corresponding to a minimum gain state of the microwave photonic loop, wherein the minimum gain corresponds to an optimal solution of the combinatorial optimization problem.