(Quantum Accelerator) Ultra-low power magneto-optic devices for quantum computing in silicon photonics
Abstract
Interconnecting a large number of qubit that operates at cryogenic temperatures and interfacing them with the room temperature environment are two fundamental challenges of the upcoming quantum revolution. Integrated optics is the most suitable candidate to address those essential requirements because it allows large scalability for high data transfer rate and minimize the heat transfer with the external environment. At cryogenic temperatures, only lasers and photodetectors have been demonstrated to operate efficiently, while isolators, switches, and modulators must be redesigned to work at such operating condition. Here, I propose to investigate magneto-optic effect to realize this essential subset of optical components. The magneto-optic effect is well suited for cryogenic applications since it is larger at lower temperatures. I will design and manufacture the proposed devices based on bonding a magneto-optic garnet on top of a silicon photonic chip, and I will design and fabricate an integrated superconductor magnet to control the driving magnetic field that induces the magneto-optic effect. The proposed solution promises to be very compact (<100?m) and extremely energy efficient, since the dissipated power in a superconductor can be assumed negligible below its critical temperature. This set of solutions can inspire a new class of magneto-optic devices that can efficiently serve for cryogenic applications and quantum computing systems.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 21, 2022
- Source ID
- FA95502110042XX0
Entities
People
- Paolo Pintus
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of California, Santa Barbara