Qubit ZooDemonstrates a coherence time exceeding 10 minutes for a single qubit in the hyperfine states of a ¹⁷¹Yb⁺ ion sympathetically cooled by a ¹³⁸Ba⁺ ion in the same Paul trap. Uses thousands of dynamical decoupling pulses to suppress magnetic-field fluctuation noise.
Key Results
- Coherence time T₂ > 10 minutes for a single trapped-ion qubit
- Platform: ¹⁷¹Yb⁺ hyperfine qubit with ¹³⁸Ba⁺ sympathetic cooling
- Sympathetic cooling eliminates heating-induced detection inefficiency
- Dynamical decoupling (thousands of pulses) suppresses magnetic field noise
- Record single-qubit coherence time at the time of publication
Links
- Journal: Nature Photonics
- arXiv: 1701.04195