Selective Noise Resistant Gate

Abstract

Realizing individual control on single qubits in a spin-based quantum register is an ever-increasing challenge due to the close proximity of the qubits resonance frequencies. Current schemes typically suffer from an inherent trade-off between fidelity and qubits selectivity. Here, we report on a new scheme which combines noise protection by dynamical decoupling and magnetic gradient based selectivity, to enhance both the fidelity and the selectivity. With a single nitrogen-vacancy center in diamond, we experimentally demonstrate quantum gates with fidelity = 0.9 $\pm$ 0.02 and a 50 kHz spectral bandwidth, which is almost an order of magnitude narrower than the unprotected bandwidth. Our scheme will enable selective control of an individual nitrogen-vacancy qubit in an interacting qubits array using relatively moderate gradients of about 1 mG/nm.

arXiv comment11 pages, 12 figures

References in corpus (24)

• Supplementary information for "Quantum supremacy using a programmable superconducting processor"
• Polynomial-Time Algorithms for Prime Factorization and Discrete Logarithms on a Quantum Computer
• Quantum Machine Learning
• Quantum algorithm for solving linear systems of equations
• Quantum Simulation
• The nitrogen-vacancy colour centre in diamond
• Universal dynamical decoupling of a single solid-state spin from a spin bath
• Decoherence-protected quantum gates for a hybrid solid-state spin register
• High fidelity spin entanglement using optimal control
• Sub-nanometer resolution in three-dimensional magnetic-resonance imaging of individual dark spins
• A neutral atom quantum register
• Scalable Architecture for a Room Temperature Solid-State Quantum Information Processor
• Vector magnetic field microscopy using nitrogen vacancy centers in diamond
• Fourier Magnetic Imaging with Nanoscale Resolution and Compressed Sensing Speed-up using Electronic Spins in Diamond
• Protected quantum computing: Interleaving gate operations with dynamical decoupling sequences
• Optical polarization of nuclear ensembles in diamond
• Decay of Rabi oscillations by dipolar-coupled dynamical spin environments
• Nanomechanical detection of nuclear magnetic resonance using a silicon nanowire oscillator
• Quantum Sensing of Weak Radio-Frequency Signals by Pulsed Mollow Absorption Spectroscopy
• Individual addressing of ions using magnetic field gradients in a surface-electrode ion trap
• Implementation of dynamically corrected gates for single-spin qubits
• Sub-optical resolution of single spins using magnetic resonance imaging at room temperature in diamond
• Nanoscale spin manipulation with pulsed magnetic gradient fields from a hard disc drive writer
• Optically Detected Magnetic Resonance Imaging

Cited by in corpus (2)

• Anisotropy with respect to the applied magnetic field of spin qubit decoherence times
• Selective nuclear-spin interaction based on a dissipatively stabilized nitrogen-vacancy center