Abstract
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 . We measure a combined qubit state preparation and single-shot readout fidelity of 99.93%, a memory coherence time of , 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.
- Received 19 May 2014
DOI:https://doi.org/10.1103/PhysRevLett.113.220501
© 2014 American Physical Society
Viewpoint
Trapped Ions Make Impeccable Qubits
Published 24 November 2014
Qubits based on trapped ions can be prepared and manipulated with record-breaking accuracy, offering a promising scalable platform for quantum computing.
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