(DURIP-19) A Low-Vibration Optical-Access Dilution Refrigerator for Quantum Sciences with Micromechanical Resonators
Abstract
Micromechanical resonators are quickly becoming important elements in quantum information processing, in particular in the transduction of information between physical platforms with different strengths. Here we propose a low-vibration, optical-access dilution refrigerator for quantum science with micromechanical resonators. This instrumentation will enable our ongoing projects funded by DOD. One project is to transduce quantum states between superconducting quantum bits and optical light, where the quantum states can be carried over long distances in optical fiber. Our experiments using micromechanical membrane motion have demonstrated state-of-the-art transduction efficiency and low noise, and are poised to connect to superconducting quantum bits. Other experiments include studies of quantum-limited displacement detection, micromechanical coupling to and between solid-state spins, and understanding of prospects for extreme coherence of engineered micromechanical motion at cryogenic temperatures. The proposed instrument will provide adequate sample space at the temperatures required to maintain superconducting circuits in their ground state, and achieve sufficient isolation of the micromechanical motion. To operate optical probes of the mechanical motion using high-finesse optical cavities the dilution refrigerator must be both low vibration and contain free-space optical windows.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Aug 12, 2021
- Source ID
- FA95502010081
Entities
People
- Cindy A. Regal
Organizations
- Air Force Office of Scientific Research
- Regents of the University of Colorado
- United States Air Force