307 citations · 568 across the 7 of their papers we have counts for
8 papers
Leakage benchmarking with decohering subgroups in the presence of preparation and measurement errors
Shawn Geller, Tongyu Zhao, Alex Kwiatkowski +3
A common problem with physical qubits is that the state can leak outside the computational subspace. To characterize the problem, it is desirable to measure both the leakage probab…
Constructing an approximate logical Markovian model of consecutive QEC cycles of a stabilizer code
Alex Kwiatkowski, Aaron J. Friedman, Shawn Geller +3
As quantum error correction (QEC) experiments continue to make rapid progress, there is increased interest in designing experiments with guarantees of logical performance. At prese…
An atomic boson sampler
Aaron W. Young, Shawn Geller, William J. Eckner +4
A boson sampler implements a restricted model of quantum computing. It is defined by the ability to sample from the distribution resulting from the interference of identical bosons…
Coherent coupling and non-destructive measurement of trapped-ion mechanical oscillators
Pan-Yu Hou, Jenny J. Wu, Stephen D. Erickson +10
Precise quantum control and measurement of several harmonic oscillators, such as the modes of the electromagnetic field in a cavity or of mechanical motion, are key for their use a…
Improving quantum state detection with adaptive sequential observations
Shawn Geller, Daniel C. Cole, Scott Glancy +1
For many quantum systems intended for information processing, one detects the logical state of a qubit by integrating a continuously observed quantity over time. For example, ion a…
High-fidelity indirect readout of trapped-ion hyperfine qubits
Stephen D. Erickson, Jenny J. Wu, Pan-Yu Hou +8
We propose and demonstrate a protocol for high-fidelity indirect readout of trapped ion hyperfine qubits, where the state of a qubit ion is mapped to a $^{25}\text{…
Direct observation of deterministic macroscopic entanglement
Shlomi Kotler, Gabriel A. Peterson, Ezad Shojaee +9
Quantum entanglement of mechanical systems emerges when distinct objects move with such a high degree of correlation that they can no longer be described separately. Although quant…
A microfabricated optically-pumped magnetic gradiometer
Dong Sheng, Abigail R. Perry, Sean P. Krzyzewski +3
We report on the development of a microfabricated atomic magnetic gradiometer based on optical spectroscopy of alkali atoms in the vapor phase. The gradiometer, which operates in t…