Cavity piezo-mechanics for superconducting-nanophotonic quantum interface
Abstract
Hybrid quantum systems are essential for the realization of distributed quantum networks. In particular, piezo-mechanics operating at typical superconducting qubit frequencies features low thermal excitations, and offers an appealing platform to bridge superconducting quantum processors and optical telecommunication channels. However, integrating superconducting and optomechanical elements at cryogenic temperatures with sufficiently strong interactions remains a tremendous challenge. Here, we report an integrated superconducting cavity piezo-optomechanical platform where 10 GHz phonons are resonantly coupled with photons in a superconducting cavity and a nanophotonic cavity at the same time. Taking advantage of the large piezo-mechanical cooperativity (Cem ~7) and the enhanced optomechanical coupling boosted by a pulsed optical pump, we demonstrate coherent interactions at cryogenic temperatures via the observation of efficient microwave-optical photon conversion. This hybrid interface makes a substantial step towards quantum communication at large scale, as well as novel explorations in microwave-optical photon entanglement and quantum sensing mediated by gigahertz phonons.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 26, 2020
- Source ID
- 10.1038/s41467-020-17053-3
Entities
People
- Ayed Al Sayem
- Chang-Ling Zou
- Changchun Zhong
- Hong X Tang
- Liang Jiang
- Mingrui Xu
- Risheng Cheng
- Sihao Wang
- Wei Fu
- Xu Han
- Yuntao Xu
Organizations
- Air Force Office of Scientific Research
- Army Research Office
- National Science Foundation
- United States Department of Energy