Spin coherence in strongly coupled spin baths in quasi-two-dimensional layers

Abstract

We investigate the spin-coherence decay of NV${}^{-}$-spins interacting with the strongly-coupled bath of nitrogen defects in diamond layers. For thin diamond layers, we demonstrate that the spin-coherence times exceed those of bulk diamond, thus allowing to surpass the limit imposed by high defect concentrations in bulk. We show that the stretched-exponential parameter for the short-time spin-coherence decay is governed by the hyperfine interaction in the bath, thereby constraining random-noise models. We introduce a novel method based on the cluster-correlation expansion applied to strongly-interacting bath partitions. Our results facilitate material development for quantum-technology devices.

Letter with Supplemental Material

References in corpus (38)

• Quantum sensing
• The nitrogen-vacancy colour centre in diamond
• Sensitivity Optimization for NV-Diamond Magnetometry
• The foundations of statistical mechanics from entanglement: Individual states vs. averages
• Universal dynamical decoupling of a single solid-state spin from a spin bath
• Canonical Typicality
• Room temperature coherent control of coupled single spins in solid
• Universal control and error correction in multi-qubit spin registers in diamond
• Detection and control of individual nuclear spins using a weakly coupled electron spin
• Theory of electron spin decoherence by interacting nuclear spins in a quantum dot
• One-second coherence for a single electron spin coupled to a multi-qubit nuclear-spin environment
• Atomic-scale imaging of a 27-nuclear-spin cluster using a single-spin quantum sensor
• Engineering shallow spins in diamond with nitrogen delta-doping
• Quantum theory for electron spin decoherence induced by nuclear spin dynamics in semiconductor quantum computer architectures: Spectral diffusion of localized electron spins in the nuclear solid-state environment
• Theory of nuclear induced spectral diffusion: Spin decoherence of phosphorus donors in Si and GaAs quantum dots
• Scalable Architecture for a Room Temperature Solid-State Quantum Information Processor
• Decoherence of dipolar spin ensembles in diamond
• Fault-tolerant operation of a logical qubit in a diamond quantum processor
• Quantum decoherence dynamics of divacancy spins in silicon carbide
• Quantum many-body theory of qubit decoherence in a finite-size spin bath
• Electron spin decoherence of single Nitrogen-Vacancy defects in diamond
• Electron spin decoherence in isotope-enriched silicon
• Quantum many-body theory for electron spin decoherence in nanoscale nuclear spin baths
• Quantum Decoherence of the Central Spin in a Sparse System of Dipolar Coupled Spins
• Single Electron Spin Decoherence by Nuclear Spin Bath: Linked Cluster Expansion Approach
• Materials challenges for quantum technologies based on color centers in diamond
• Distribution of local entropy in the Hilbert space of bi-partite quantum systems: Origin of Jaynes' principle
• Hybrid solid state qubits: the powerful role of electron spins
• Probing many-body dynamics in a two dimensional dipolar spin ensemble
• Probing the coherence of solid-state qubits at avoided crossings
• Converting a real quantum bath to an effective classical noise
• Derivation of Markovian master equations for spatially correlated decoherence
• Two-dimensional spin systems in PECVD-grown diamond with tunable density and long coherence for enhanced quantum sensing and simulation
• Excitation- and state-transfer through spin chains in the presence of spatially correlated noise
• Dual-probe decoherence microscopy: Probing pockets of coherence in a decohering environment
• Performance of quantum registers in diamond in the presence of spin impurities
• Self-consistent noise characterization of quantum devices
• Long-lived coherence in driven spin systems: from two to infinite spatial dimensions

Cited by in corpus (3)

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