Controllable broadband microwave photon memory based on six-wave mixing and implementation method

• Main Authors: ZHANG ZUANXIAN, BIAN WU, YAN HUI, TU HAITAO, LIAO KAIYU
• Format: Patent
• Language: Chinese; English
• Published: 13.05.2022
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION

The invention discloses a controllable broadband microwave photon memory based on six-wave mixing and an implementation method. The microwave photon memory comprises a cigar-type cold atomic group, a microwave source, a signal modulator, an optical fiber, a dichroic mirror, a photomultiplier and a lock-in amplifier. Signal microwaves and auxiliary microwaves which are generated by the microwave source and need to be stored are modulated by the signal modulator and then input into the cigar type cold atomic group; the cigar-type cold atomic group stores signal microwaves into an atomic ensemble and converts the signal microwaves into light waves to be read under the action of the modulated auxiliary light waves; the photomultiplier is used for receiving the generated light wave; a lock-in amplifier recovers a waveform from the modulated light wave signal. The controllable six-wave mixing process of Rydberg atoms is utilized, signal microwaves are rapidly stored as Rydberg polaritons, the Rydberg polaritons are