Spin coherence in two-dimensional materials

Ye, Meng; Seo, Hosung; Galli, Giulia

doi:10.1038/s41524-019-0182-3

Cited by 90 publications

(100 citation statements)

References 50 publications

(64 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These methods have been recently successful in describing novel excitations, such as Moiré excitons [64][65][66] . Model systems have been very useful to calculate observables that not easily accessible in a first principle framework, such as decoherence and spin relaxation times [67][68][69][70][71][72][73] . For such effective systems, first principle methods are usually used to provide single-particle wave functions and parameters that build the models of the system of interest.…”

Section: (2) Theory For First Principles Many-body Predictions Simulmentioning

confidence: 99%

Quantum Materials with Atomic Precision: Artificial Atoms in Solids: Ab Initio Design, Control, and Integration of Single Photon Emitters in Artificial Quantum Materials

Narang

Ciccarino

Englund

2019

Adv Funct Materials

View full text Add to dashboard Cite

This Progress Report explores advances and opportunities in the atomic-scale design, fabrication and imaging of quantum materials towards creating artificial atoms in solids with tailored optoelectronic and quantum properties. The authors outline an "ab initio" approach to quantitatively linking first-principles calculations and atomic imaging with atomic patterning, setting the stage for new designer quantum nanomaterials.

show abstract

Section: (2) Theory For First Principles Many-body Predictions Simulmentioning

confidence: 99%

Quantum Materials with Atomic Precision: Artificial Atoms in Solids: Ab Initio Design, Control, and Integration of Single Photon Emitters in Artificial Quantum Materials

Narang

Ciccarino

Englund

2019

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

“…For instance, several promising spin defects have been identified in silicon carbide, including the divacancy (VV) 8,9 , Cr [10][11][12] , and V impurities 13 . There is also a growing interest in discovering and designing spin qubits in piezo-electric materials such as aluminum nitride 14,15 , in oxides 16 , and in 2D materials 17,18 .…”

Section: Introductionmentioning

confidence: 99%

Spin–spin interactions in defects in solids from mixed all-electron and pseudopotential first-principles calculations

Ghosh

Onizhuk

et al. 2021

npj Comput Mater

Self Cite

View full text Add to dashboard Cite

Understanding the quantum dynamics of spin defects and their coherence properties requires an accurate modeling of spin-spin interaction in solids and molecules, for example by using spin Hamiltonians with parameters obtained from first principles calculations. We present a real-space approach based on density functional theory for the calculation of spin-Hamiltonian parameters, where only selected atoms are treated at the all-electron level, while the rest of the system is described with the pseudopotential approximation. Our approach permits calculations for systems containing more than 1000 atoms, as demonstrated for defects in diamond and silicon carbide. We show that only a small number of atoms surrounding the defect needs to be treated at the all-electron level, in order to obtain an overall all-electron accuracy for hyperfine and zero-field splitting tensors. We also present results for coherence times, computed with the cluster correlation expansion method, highlighting the importance of accurate spin-Hamiltonian parameters for quantitative predictions of spin dynamics.

show abstract

“…While the hypothetical spin defects in BN are similar to NV in diamond or NV and DV in SiC, they have been computationally studied in isotopically pure h-BN material [147], promising an even longer coherence time T 2 (up to 30 ms) compared to 3D materials. However, their experimental verification is still not fully achieved as the isotopic purification of 2D material synthesis appears quite far from current material synthesis capabilities.…”

Section: Spin-photon Interfacementioning

confidence: 99%

Hexagonal boron nitride: a review of the emerging material platform for single-photon sources and the spin–photon interface

Castelletto

Inam

Sato

et al. 2020

Beilstein J. Nanotechnol.

View full text Add to dashboard Cite

Single-photon sources and their optical spin readout are at the core of applications in quantum communication, quantum computation, and quantum sensing. Their integration in photonic structures such as photonic crystals, microdisks, microring resonators, and nanopillars is essential for their deployment in quantum technologies. While there are currently only two material platforms (diamond and silicon carbide) with proven single-photon emission from the visible to infrared, a quantum spin–photon interface, and ancilla qubits, it is expected that other material platforms could emerge with similar characteristics in the near future. These two materials also naturally lead to monolithic integrated photonics as both are good photonic materials. While so far the verification of single-photon sources was based on discovery, assignment and then assessment and control of their quantum properties for applications, a better approach could be to identify applications and then search for the material that could address the requirements of the application in terms of quantum properties of the defects. This approach is quite difficult as it is based mostly on the reliability of modeling and predicting of color center properties in various materials, and their experimental verification is challenging. In this paper, we review some recent advances in an emerging material, low-dimensional (2D, 1D, 0D) hexagonal boron nitride (h-BN), which could lead to establishing such a platform. We highlight the recent achievements of the specific material for the expected applications in quantum technologies, indicating complementary outstanding properties compared to the other 3D bulk materials.

show abstract

Spin coherence in two-dimensional materials

Cited by 90 publications

References 50 publications

Quantum Materials with Atomic Precision: Artificial Atoms in Solids: Ab Initio Design, Control, and Integration of Single Photon Emitters in Artificial Quantum Materials

Quantum Materials with Atomic Precision: Artificial Atoms in Solids: Ab Initio Design, Control, and Integration of Single Photon Emitters in Artificial Quantum Materials

Spin–spin interactions in defects in solids from mixed all-electron and pseudopotential first-principles calculations

Hexagonal boron nitride: a review of the emerging material platform for single-photon sources and the spin–photon interface

Contact Info

Product

Resources

About