Robust control of entanglement in a Nitrogen-vacancy centre coupled to a Carbon-13 nuclear spin in diamond

Abstract

We address a problem of generating a robust entangling gate between electronic and nuclear spins in the system of a single nitrogen-vacany centre coupled to a nearest Carbon-13 atom in diamond against certain types of systematic errors such as pulse-length and off-resonance errors. We analyse the robustness of various control schemes: sequential pulses, composite pulses and numerically-optimised pulses. We find that numerically-optimised pulses, produced by the gradient ascent pulse engineering algorithm (GRAPE), are more robust than the composite pulses and the sequential pulses. The optimised pulses can also be implemented in a faster time than the composite pulses.

15 pages, 5 figures

References in corpus (2)

• Solid state quantum memory using the 31P nuclear spin
• Tackling Systematic Errors in Quantum Logic Gates with Composite Rotations

Cited by in corpus (16)

• Introduction to Quantum Optimal Control for Quantum Sensing with Nitrogen-Vacancy Centers in Diamond
• A Tutorial on Optimal Control and Reinforcement Learning methods for Quantum Technologies
• Optimizing for an arbitrary perfect entangler. II. Application
• Suppressing decoherence and improving entanglement by quantum-jump-based feedback control in two-level systems
• Hessian-based optimization of constrained quantum control
• Optimal quantum optical control of spin in diamond
• High Fidelity Quantum Gates in the Presence of Dispersion
• Short composite rotation robust against two common systematic errors
• Gate-set evaluation metrics for closed-loop optimal control on nitrogen-vacancy center ensembles in diamond
• Three-state coherent control using narrowband and passband sequences
• General off-resonance error robust symmetric composite pulses with three elementary operations
• High-Fidelity Entangling Gates for Electron and Nuclear Spin Qubits in Diamond
• Robust microwave cavity control for NV ensemble manipulation
• Low power, fast and broadband ESR quantum control using a stripline resonator
• Ultrabroadband, ultranarrowband and ultrapassband composite polarisation half-wave plates, ultrabroadband composite polarisation pi-rotators and on the quantum-classical analogy
• Efficiency of optimal control for noisy spin qubits in diamond