Entanglement structures in disordered chains of nitrogen-vacancy centers

Abstract

A recent study [Phys. Rev. B 17 174111 (2022)] has hypothesized the assembly, along a specific type of one-dimensional defects of diamond, of chains of nitrogen-vacancy (NV) centers, potentially enabling the creation of qubit registers via their dipole-coupled electron spins. Here we investigate the connectivity of chains of up to ten coupled spins, mediated by the bi- and multipartite entanglement of their eigenstates. Rather conveniently, for regularly spaced spins the vast majority of the eigenstates displays strong connectivity, especially towards the center of the spectrum and for longer chains. Furthermore, positional disorder can change, and possibly reduce, the connectivity of the register, but seldom suppresses it.

10 pages, 6 figures

References in corpus (34)

• Quantum entanglement
• Three qubits can be entangled in two inequivalent ways
• Distributed Entanglement
• Entanglement detection
• Persistent entanglement in arrays of interacting particles
• Trapped-Ion Quantum Computing: Progress and Challenges
• The Role of Relative Entropy in Quantum Information Theory
• Universal state inversion and concurrence in arbitrary dimensions
• The nitrogen-vacancy center in diamond re-visited
• Room temperature entanglement between distant single spins in diamond
• Scalable quantum register based on coupled electron spins in a room temperature solid
• Silicon-Vacancy Spin Qubit in Diamond: A Quantum Memory Exceeding 10 ms with Single-Shot State Readout
• A 10-qubit solid-state spin register with quantum memory up to one minute
• Solid state quantum memory using the 31P nuclear spin
• Measures and dynamics of entangled states
• Entanglement Certification $-$ From Theory to Experiment
• Semiconductor Qubits In Practice
• High fidelity spin entanglement using optimal control
• 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
• Optomechanical Quantum Control of a Nitrogen Vacancy Center in Diamond
• Coupling Nitrogen Vacancy Centers in Diamond to Superconducting Flux Qubits
• Scalable Architecture for a Room Temperature Solid-State Quantum Information Processor
• Efficient and coherent excitation transfer across disordered molecular networks
• Interfacing quantum optical and solid state qubits
• Electron-Mediated Nuclear-Spin Interactions Between Distant NV Centers
• Entanglement in indistinguishable particle systems
• Global characteristics of all eigenstates of local many-body Hamiltonians: participation ratio and entanglement entropy
• Dephasing mechanisms of diamond-based nuclear-spin memories for quantum networks
• Deterministic single ion implantation of rare-earth ions for nanometer resolution colour center generation
• Coupling of nitrogen vacancy centers in nanodiamonds by means of phonons
• Stability and electronic structure of NV centers at dislocation cores in diamond
• Performance of quantum registers in diamond in the presence of spin impurities
• Quantized fields for optimal control in the strong coupling regime