High-fidelity gate operations for quantum computing beyond dephasing time limits
arXiv:1506.04593 · doi:10.1103/PhysRevA.92.062332
Abstract
The implementation of quantum gates with fidelities that exceed the threshold for reliable quantum computing requires robust gates whose performance is not limited by the precision of the available control fields. The performance of these gates also should not be affected by the noisy environment of the quantum register. Here we use randomized benchmarking of quantum gate operations to compare the performance of different families of gates that compensate errors in the control field amplitudes and decouple the system from the environmental noise. We obtain average fidelities of up to 99.8\%, which exceeds the threshold value for some quantum error correction schemes as well as the expected limit from the dephasing induced by the environment.
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Cited by in corpus (5)
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- Operational Markovianization in Randomized Benchmarking
- High-fidelity two-qubit gates via dynamical decoupling of local 1/f noise at optimal point
- Protection of quantum evolutions under parity-time symmetric non-Hermitian Hamiltonians by dynamical decoupling
- Intrinsic bounds of a two-qudit random evolution