Noise-resistant control for a spin qubit array

Abstract

We develop a systematic method of performing corrected gate operations on an array of exchange-coupled singlet-triplet qubits in the presence of both fluctuating nuclear Overhauser field gradients and charge noise. The single-qubit control sequences we present have a simple form, are relatively short, and form the building blocks of a corrected CNOT gate when also implemented on the inter-qubit exchange link. This is a key step towards enabling large-scale quantum computation in a semiconductor-based architecture by facilitating error reduction below the quantum error correction threshold for both single-qubit and multi-qubit gate operations.

5 pages + 4 pages supplementary material

References in corpus (11)

• Demonstration of Entanglement of Electrostatically Coupled Singlet-Triplet Qubits
• Universal quantum control of two-electron spin quantum bits using dynamic nuclear polarization
• Enhancing the Coherence of a Spin Qubit by Operating it as a Feedback Loop That Controls its Nuclear Spin Bath
• Electron Spin Dephasing due to Hyperfine Interactions with a Nuclear Spin Bath
• Electron spin decoherence in isotope-enriched silicon
• Measurement of Temporal Correlations of the Overhauser Field in a Double Quantum Dot
• Dynamical Quantum Error Correction of Unitary Operations with Bounded Controls
• Nonperturbative master equation solution of central spin dephasing dynamics
• Robust Ising Gates for Practical Quantum Computation
• Concatenated composite pulses compensating simultaneous systematic errors
• Average Fidelity in n-Qubit systems

Cited by in corpus (9)

• Suppressing qubit dephasing using real-time Hamiltonian estimation
• Exchange-based two-qubit gate for singlet-triplet qubits
• Cooperative pulses in robust quantum control: Application to broadband Ramsey-type pulse sequence elements
• Noise-compensating pulses for electrostatically controlled silicon spin qubits
• Directly accessible entangling gates for capacitively coupled singlet-triplet qubits
• Environmental noise effects on entanglement fidelity of exchange-coupled semiconductor spin qubits
• Charge-noise tolerant exchange gates of singlet-triplet qubits in asymmetric double quantum dots
• Benchmarking of dynamically corrected gates for the exchange-only spin qubit in $1/f$ noise environment
• Construction of Arbitrary Robust One-Qubit Operations Using Planar Geometry