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- IBM Research - Thomas J. Watson Research CenterUS61 papers
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4 papers · 2 filters
Spurious harmonic response of multipulse quantum sensing sequences
M. Loretz, J. M. Boss, T. Rosskopf +3
Multipulse sequences based on Carr-Purcell decoupling are frequently used for narrow-band signal detection in single spin magnetometry. We have analyzed the behavior of multipulse…
Optimized pulse shapes for a resonator-induced phase gate
Andrew W. Cross, Jay M. Gambetta
The resonator-induced phase gate is a multi-qubit controlled-phase gate for fixed-frequency superconducting qubits. Through off-resonant driving of a bus resonator, statically coup…
Detecting arbitrary quantum errors via stabilizer measurements on a sublattice of the surface code
A. D. Córcoles, Easwar Magesan, Srikanth J. Srinivasan +4
To build a fault-tolerant quantum computer, it is necessary to implement a quantum error correcting code. Such codes rely on the ability to extract information about the quantum er…
Efficient Algorithms for Maximum Likelihood Decoding in the Surface Code
Sergey Bravyi, Martin Suchara, Alexander Vargo
We describe two implementations of the optimal error correction algorithm known as the maximum likelihood decoder (MLD) for the 2D surface code with a noiseless syndrome extraction…