High-Fidelity Single-Qubit Gates for Two-Electron Spin Qubits in GaAs
arXiv:1404.1712 · doi:10.1103/PhysRevLett.113.150501
Abstract
Single-qubit operations on singlet-triplet qubits in GaAs double quantum dots have not yet reached the fidelities required for fault-tolerant quantum information processing. Considering experimentally important constraints and using measured noise spectra, we numerically minimize the effect of decoherence (including high-frequency 1/f-like noise) and show theoretically that quantum gates with fidelities higher than 99.9% are achievable. We also present a self-consistent tuning protocol which should allow the elimination of individual systematic gate errors directly in an experiment.
5 pages, 4 figures
References in corpus (14)
- Fault-tolerant quantum computation with high threshold in two dimensions
- Optimized Dynamical Decoupling in a Model Quantum Memory
- Demonstration of Entanglement of Electrostatically Coupled Singlet-Triplet Qubits
- How to Enhance Dephasing Time in Superconducting Qubits
- Universal quantum control of two-electron spin quantum bits using dynamic nuclear polarization
- Electrometry Using Coherent Exchange Oscillations in a Singlet-Triplet-Qubit
- Enhancing the Coherence of a Spin Qubit by Operating it as a Feedback Loop That Controls its Nuclear Spin Bath
- Randomized benchmarking and process tomography for gate errors in a solid-state qubit
- Adaptive hybrid optimal quantum control for imprecisely characterized systems
- Universal set of quantum gates for double-dot spin qubits with fixed interdot coupling
- Measurement of Temporal Correlations of the Overhauser Field in a Double Quantum Dot
- Noise-resistant control for a spin qubit array
- Robust quantum gates for singlet-triplet spin qubits using composite pulses
- Robustness of composite pulses to time-dependent control noise
Cited by in corpus (35)
- Reduced sensitivity to charge noise in semiconductor spin qubits via symmetric operation
- Noise suppression using symmetric exchange gates in spin qubits
- Closed-loop control of a GaAs-based singlet-triplet spin qubit with 99.5% gate fidelity and low leakage
- Long-lived valley states in bilayer graphene quantum dots
- High-fidelity single-shot readout for a spin qubit via an enhanced latching mechanism
- Exact Rotating Wave Approximation
- Single-shot readout in graphene quantum dots
- Neural-network-designed pulse sequences for robust control of singlet-triplet qubits
- Control Electronics For Semiconductor Spin Qubits
- Systematic Magnus-based approach for suppressing leakage and non-adiabatic errors in quantum dynamics
- High-fidelity gate set for exchange-coupled singlet-triplet qubits
- Exchange-interaction of two spin qubits mediated by a superconductor
- Noise filtering of composite pulses for singlet-triplet qubits
- Fault-Tolerant Quantum Computation for Singlet-Triplet Qubits with Leakage Errors
- Non-Gaussian signatures and collective effects in charge noise affecting a dynamically-decoupled qubit
- Optimal Control of Quantum Measurement
- 30 GHz-voltage controlled oscillator operating at 4 K
- Negative exchange interactions in coupled few-electron quantum dots
- Filter Functions for Quantum Processes under Correlated Noise
- Transfer of a quantum state from a photonic qubit to a gate-defined quantum dot
- Self-Consistent Calibration of Quantum Gate Sets
- Analytic Filter Function Derivatives for Quantum Optimal Control
- Engineering adiabaticity at an avoided crossing with optimal control
- Charge-noise tolerant exchange gates of singlet-triplet qubits in asymmetric double quantum dots
- qopt: An experiment-oriented Qubit Simulation and Quantum Optimal Control Package
- Phonon-assisted relaxation and decoherence of singlet-triplet qubits in Si/SiGe quantum dots
- Leakage and sweet spots in triple-quantum-dot spin qubits: A molecular-orbital study
- Simple operation sequences to couple and interchange quantum information between spin qubits of different kinds
- Towards a realistic GaAs-spin qubit device for a classical error-corrected quantum memory
- Feedback-tuned noise-resilient gates for encoded spin qubits
- Fast high-fidelity geometric gates for singlet-triplet qubits
- Dipole coupling of a bilayer graphene quantum dot to a high-impedance microwave resonator
- On Noise-Sensitive Automatic Tuning of Gate-Defined Sensor Dots
- Noise suppression and long-range exchange coupling for gallium arsenide spin qubits
- Correcting on-chip distortion of control pulses with silicon spin qubits