Chip-scale Group-IV Integrated Photonics for Single-Photon Detection and Quantum Metrology
Abstract
Quantum photonics is a key enabler of quantum applications such as quantum computing and quantum communications. However, the lack of a room-temperature on-chip single photon detector (SPD) has held back the widespread use or practicality of quantum integrated photonics. This proposal offers an innovative 300K single-photon avalanche diode (SPAD) solution for the silicon-on-insulator SOI platform operating at the industry-standard 1550 nm wavelength. Our detector uses an avalanche diode in Si for carrier multiplication and a separate efficient GeSn absorber, both of which are CMOS compatible. Preliminary studies show that reductions in dark count rates and increases in waveguide coupling efficiency are needed to enable quantum metrology. Our basic research will investigate end-fire coupling to embedded GeSn, and cladding-mode side coupling to a flip-chip bonded SPAD mini-die. After SPAD efficiency of greater than90 percent has been reached in our research, we shall investigate the design of quantum gyroscope chips and quantum chem-bio sensor chips, entirely at room temperature and totally integrated with an LD-pumped quantum source generator, interferometer, and SPAD array in order to achieve sensor resolution that is 200 percent or 400 percent greater than the classical limit of such sensors. Finally, atomic-level states in silicon waveguides produced by carbon-implanted point defects shall be investigated as offering quantum performances similar to those attained using nitrogen-vacancy centers in diamond.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 07, 2023
- Source ID
- FA95502110347
Entities
People
- Greg Sun
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Massachusetts