System and method for cryogenic optoelectronic data link

US11621786B1 · kind B1 · utility

Assignee

• SeeQC, Inc. · US

Inventors

• Igor V. Vernik · Yorktown Heights, US
• Oleg A. Mukhanov · Putnam Valley, US
• Alan M. Kadin · Princeton Junction, US
• Christopher T. Phare · New York, US
• Michal Lipson · New York, US
• Keren Bergman · Princeton, US

Key dates

• Filing date: Sep 6, 2021
• Grant date: Apr 4, 2023
• Expiry date: Sep 6, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04B10/5563
• WIPO field: Telecommunications
• WIPO sector: Electrical engineering

Abstract

A cryogenic optoelectronic data link, comprising a sending module operating at a cryogenic temperature less than 100 K. An ultrasensitive electro-optic modulator, sensitive to input voltages of less than 10 mV, may include at least one optically active layer of graphene, which may be part of a microscale resonator, which in turn may be integrated with an optical waveguide or an optical fiber. The optoelectronic data link enables optical output of weak electrical signals from superconducting or other cryogenic electronic devices in either digital or analog form. The modulator may be integrated on the same chip as the cryogenic electrical devices. A plurality of cryogenic electrical devices may generate a plurality of electrical signals, each coupled to its own modulator. The plurality of modulators may be resonant at different frequencies, and coupled to a common optical output line to transmit a combined wavelength-division-multiplexed (WDM) optical signal.