Implementing optimal control pulse shaping for improved single-qubit gates

Details Implementing optimal control pulse shaping for improved single-qubit gates Implementing optimal control pulse shaping for improved single-qubit gates

2010-05-07

arxiv.org/abs/1005.1279v1

Phys. Rev. A 82, 040305(R) (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevA.82.040305

We employ pulse shaping to abate single-qubit gate errors arising from the weak anharmonicity of transmon superconducting qubits. By applying shaped pulses to both quadratures of rotation, a phase error induced by the presence of higher levels is corrected. Using a derivative of the control on the quadrature channel, we are able to remove the effect of the anharmonic levels for multiple qubits coupled to a microwave resonator. Randomized benchmarking is used to quantify the average error per gate, achieving a minimum of 0.007+/-0.005 using 4 ns-wide pulse.

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