Achieving high-fidelity single-qubit gates in a strongly driven charge qubit with 1/f charge noise
Abstract
Charge qubits formed in double quantum dots represent quintessential two-level systems that enjoy both ease of control and efficient readout. Unfortunately, charge noise can cause rapid decoherence, with typical single-qubit gate fidelities falling below 90%. Here we develop analytical methods to study the evolution of strongly driven charge qubits, for general and 1/f charge-noise spectra. We show that special pulsing techniques can simultaneously suppress errors due to strong driving and charge noise, yielding single-qubit gates with fidelities above 99.9%. These results demonstrate that quantum dot charge qubits provide a potential route to high-fidelity quantum computation.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 31, 2019
- Source ID
- 10.1038/s41534-019-0127-1
Entities
People
- Mark Friesen
- S. N. Coppersmith
- Yuan-Chi Yang
Organizations
- Army Research Office
- Office of Naval Research