期刊
PHYSICAL REVIEW LETTERS
卷 113, 期 22, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.113.220501
关键词
-
资金
- EPSRC
- EPSRC [EP/I028978/1] Funding Source: UKRI
We implement all single-qubit operations with fidelities significantly above the minimum threshold required for fault-tolerant quantum computing, using a trapped-ion qubit stored in hyperfine atomic clock states of Ca-43(+). We measure a combined qubit state preparation and single-shot readout fidelity of 99.93%, a memory coherence time of T-2* = 50 sec, and an average single-qubit gate fidelity of 99.9999%. These results are achieved in a room-temperature microfabricated surface trap, without the use of magnetic field shielding or dynamic decoupling techniques to overcome technical noise.
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