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quant-ph2020
A high fidelity light-shift gate for clock-state qubits
C. H. Baldwin, B. J. Bjork, M. Foss-Feig +7
To date, the highest fidelity quantum logic gates between two qubits have been achieved with variations on the geometric-phase gate in trapped ions, with the two leading variants b…
quant-ph2019
Eliminating Leakage Errors in Hyperfine Qubits
D. Hayes, D. Stack, B. Bjork +3
Population leakage outside the qubit subspace presents a particularly harmful source of error that cannot be handled by standard error correction methods. Using a trapped Y…
quant-ph2019
Subspace benchmarking high-fidelity entangling operations with trapped ions
C. H. Baldwin, B. J. Bjork, J. P. Gaebler +2
We present a new and simplified two-qubit randomized benchmarking procedure that operates only in the symmetric subspace of a pair of qubits and is well suited for benchmarking tra…