Heterogeneous III-V/Silicon Photonics for All-on-Chip Linear Optical Quantum Computing
Abstract
Linear optics (LO) is a promising approach for implementing universal quantum computing with modest resources, requiring only single-photon sources, simple optical elements, and single-photon detectors. Existing technologies capable of few-photon processing utilize integrated photonics to reduce computational overhead, but they rely on low-efficiency, off-chip optical sources and detectors that limit scalability and stability. Similar to the revolutionary advancements in classical computing enabled by integrated circuits, the realization of optical quantum computing requires interfacing all components onto a single chip, which imposes conceptual and practical challenges. The goal of this research is to address these challenges by developing an all-electrical, all-on-chip quantum photonic platform capable of implementing the basic logic gates necessary for universal quantum computation. This is achieved through the fabrication and metrology of III-V/silicon photonic circuits that combine state-of-the-art, electrically driven quantum dot (QD) single-photon sources, silicon-based photonics for LO operations, and superconducting nanowire single-photon detectors. The objectives are: (1) Develop novel QD single-photon diodes integrated with silicon-based photonic circuits, and implement on-chip quantum optical experiments to examine the influence of environmental noise, decoherence processes, and carrier tunneling dynamics on photon purity, indistinguishability, and delivery rates. (2) Demonstrate a fully integrated quantum photonic platform and devise LO protocols for implementing one- and two-qubit photonic gates. The realization of all-on-chip III-V/silicon quantum photonic circuits would profoundly impact how information is processed and communicated, potentially replacing existing and future computing technologies.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 12, 2021
- Source ID
- FA95502010150
Entities
People
- Galan Moody
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of California, Santa Barbara