(Quantum Accelerator) An Entangled Photon Pair Source for Hybrid Optical Microwave Quantum Networks
Abstract
The vision of this research is to realize a quantum internet for distributed quantum information technology through efficient and robust distribution of quantum states over long distances. This project focuses on an essential component in such a network: a quantum interconnect between leading low temperature microwave-regime quantum computers and room temperature quantum optical fiber networks. Connecting leading quantum computing technology with optical quantum information networks leads to two major advances of importance to defense: 1. Forming networks of quantum computers will significantly increase computational power and accelerate solutions to materials design and advanced simulation problems that are beyond the capacity of classical computers to solve. 2. Incorporating future quantum computers as nodes in optical networks will provide the error correction and entanglement distillation required to enhance quantum encryption networks from simple point-to-point links to complex multi-node networks. A key challenge is that optical networks cannot yet interface with leading quantum platforms like superconducting qubits. What is needed is a way to create quantum entanglement between microwave and optical photons. Our aim is to engineer a hybrid source to generate a pair of entangled photons: an optical photon for fiber transmission at room temperature, and a microwave photon to couple to superconducting circuits. In this project we have made progress on the underlying theory of hybrid sources and characterized a candidate device to realize a new hybrid source protocol. Our hybrid entangled source protocol is tailored to leverage the appealing properties of rare-earth atom ensembles in crystals. To build the best possible device it is essential to understand the theory of the atom-light interactions, and experimentally test the rare-earth atom properties in candidate architectures.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 07, 2022
- Accession Number
- AD1191599
Entities
People
- John Bartholomew
Organizations
- University of Sydney