Protecting qubit coherence by spectrally engineered driving of the spin environment
Abstract
Modern quantum technologies rely crucially on techniques to mitigate quantum decoherence; these techniques can be either passive, achieved for example via materials engineering, or active, typically achieved via pulsed monochromatic driving fields applied to the qubit. Using a solid-state defect spin coupled to a microwave-driven spin bath, we experimentally demonstrate a decoherence mitigation method based on spectral engineering of the environmental noise with a polychromatic drive waveform, and show that it outperforms monochromatic techniques. Results are in agreement with quantitative modeling, and open the path to active decoherence protection using custom-designed waveforms applied to the environment rather than the qubit.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 29, 2022
- Source ID
- 10.1038/s41534-022-00560-0
Entities
People
- Ania C. Bleszynski Jayich
- David M. Weld
- Dolev Bluvstein
- Maxime Joos
- Yuanqi Lyu
Organizations
- Hertz Foundation
- National Science Foundation
- United States Department of Defense
- United States Department of Energy