Robust Dynamical Decoupling for Arbitrary Quantum States of a Single NV Center in Diamond

Abstract

Dynamical decoupling is a powerful technique for extending the coherence time (T${}_2$) of qubits. We apply this technique to the electron spin qubit of a single nitrogen-vacancy center in type IIa diamond. In a crystal with natural abundance of ${}^{13}$C nuclear spins, we extend the decoherence time up to 2.2 ms. This is close to the T${}_1$ value of this NV center (4 ms). Since dynamical decoupling must perform well for arbitrary initial conditions, we measured the dependence on the initial state and compared the performance of different sequences with respect to initial state dependence and robustness to experimental imperfections.

EPL Accepted

References in corpus (17)

• Quantum Computing
• Sensing electric fields using single diamond spins
• Dynamical decoupling and noise spectroscopy with a superconducting flux qubit
• Universal dynamical decoupling of a single solid-state spin from a spin bath
• Electron spin coherence exceeding seconds in high purity silicon
• Optimized Dynamical Decoupling in a Model Quantum Memory
• Fault-Tolerant Quantum Dynamical Decoupling
• Dynamic polarization of single nuclear spins by optical pumping of NV color centers in diamond at room temperature
• Extending Quantum Coherence in Diamond
• Robust dynamical decoupling with bounded controls
• Robust dynamical decoupling for quantum computing and quantum memory
• Dynamical Decoupling of a single electron spin at room temperature
• Coherence of single spins coupled to a nuclear spin bath of varying density
• Single-spin magnetometry with multi-pulse sensing sequences
• Electron spin decoherence of single Nitrogen-Vacancy defects in diamond
• Performance comparison of dynamical decoupling sequences for a qubit in a rapidly fluctuating spin-bath
• Application of Optimal Control to CPMG Refocusing Pulse Design

Cited by in corpus (16)

• Solid-state electronic spin coherence time approaching one second
• Locking of electron spin coherence over fifty milliseconds in natural silicon carbide
• Optimizing a Dynamical Decoupling Protocol for Solid-State Electronic Spin Ensembles in Diamond
• Protected quantum computing: Interleaving gate operations with dynamical decoupling sequences
• Room-temperature high-speed nuclear-spin quantum memory in diamond
• Experimental realization of time-dependent phase-modulated continuous dynamical decoupling
• Experimental protection of 2-qubit quantum gates against environmental noise by dynamical decoupling
• Preparing multiparticle entangled states of NV centers via adiabatic ground-state transitions
• Coherence protection and decay mechanism in qubit ensembles under concatenated continuous driving
• Experimental characterization of spin-3/2 silicon vacancy centers in 6H-SiC
• The non-vanishing effect of detuning errors in dynamical decoupling based quantum sensing experiments
• Measuring environmental quantum noise exhibiting a non-monotonous spectral shape
• Quantum bath control with nuclear spin state selectivity via pulse-adjusted dynamical decoupling
• Level anti-crossings of an NV center in diamond: Decoherence-free subspaces and 3D sensors of microwave magnetic fields
• Room-Temperature Electrical Readout of Spin Defects in van der Waals Materials
• Decoherence mitigation by real-time noise acquisition