Quantum computing researchers at NIST are developing hybrid quantum systems that combine microwave photons, acoustic phonons, and solid-state optical single-photon emitters on a single microchip. These systems aim to create efficient transducers for converting microwave quantum states into optical photons for quantum communication networks.
The project focuses on coupling nanoscale acoustic resonators with InAs quantum dot single photon sources. At ultra-low temperatures, the acoustic resonators act as simple quantum harmonic oscillators and can exchange a single quantum of sound (phonon) to a visible light photon via the embedded QD.
The goal is to create a quantum communication module that links multiple superconducting quantum computers over a kilometer-scale optical fiber network. NIST has fabricated first-generation devices proving the viability of this approach, and is aggressively pursuing improvements to reach quantum-compatible performance.
Keywords: Quantum, Harmonic, Phonons, Single Photon, Quantum Dot
