556 citations · 2.2k across the 11 of their papers we have counts for
11 papers
Spectator Errors in Tunable Coupling Architectures
D. M. Zajac, J. Stehlik, D. L. Underwood +9
The addition of tunable couplers to superconducting quantum architectures offers significant advantages for scaling compared to fixed coupling approaches. In principle, tunable cou…
Tunable Coupling Architecture for Fixed-frequency Transmons
J. Stehlik, D. M. Zajac, D. L. Underwood +9
Implementation of high-fidelity two-qubit operations is a key ingredient for scalable quantum error correction. In superconducting qubit architectures tunable buses have been explo…
Single-Spin Relaxation in a Synthetic Spin-Orbit Field
F. Borjans, D. M. Zajac, T. M. Hazard +1
Strong magnetic field gradients can produce a synthetic spin-orbit interaction that allows for high fidelity electrical control of single electron spins. We investigate how a field…
Shuttling a single charge across a one-dimensional array of silicon quantum dots
A. R. Mills, D. M. Zajac, M. J. Gullans +3
Significant advances have been made towards fault-tolerant operation of silicon spin qubits, with single qubit fidelities exceeding 99.9%, several demonstrations of two-qubit gates…
High-fidelity quantum gates in Si/SiGe double quantum dots
Maximilian Russ, D. M. Zajac, A. J. Sigillito +4
Motivated by recent experiments of Zajac et al. [arXiv:1708.03530], we theoretically describe high-fidelity two-qubit gates using the exchange interaction between the spins in neig…
A Coherent Spin-Photon Interface in Silicon
X. Mi, M. Benito, S. Putz +4
Electron spins in silicon quantum dots are attractive systems for quantum computing due to their long coherence times and the promise of rapid scaling using semiconductor fabricati…
Quantum CNOT Gate for Spins in Silicon
D. M. Zajac, A. J. Sigillito, M. Russ +4
Single qubit rotations and two-qubit CNOT operations are crucial ingredients for universal quantum computing. While high fidelity single qubit operations have been achieved using t…
Strong Coupling of a Single Electron in Silicon to a Microwave Photon
X. Mi, J. V. Cady, D. M. Zajac +2
Silicon is vital to the computing industry due to the high quality of its native oxide and well-established doping technologies. Isotopic purification has enabled quantum coherence…
Circuit Quantum Electrodynamics Architecture for Gate-Defined Quantum Dots in Silicon
X. Mi, J. V. Cady, D. M. Zajac +3
We demonstrate a hybrid device architecture where the charge states in a double quantum dot (DQD) formed in a Si/SiGe heterostructure are read out using an on-chip superconducting…
Investigation of Mobility Limiting Mechanisms in Undoped Si/SiGe Heterostructures
X. Mi, T. M. Hazard, C. Payette +4
We perform detailed magnetotransport studies on two-dimensional electron gases (2DEGs) formed in undoped Si/SiGe heterostructures in order to identify the electron mobility limitin…
A Reconfigurable Gate Architecture for Si/SiGe Quantum Dots
D. M. Zajac, T. M. Hazard, X. Mi +2
We demonstrate a reconfigurable quantum dot gate architecture that incorporates two interchangeable transport channels. One channel is used to form quantum dots and the other is us…