Impact of nuclear spin dynamics on electron transport through donors

2015/09/10 by Samuel K. Gorman, S. K. Gorman, Matthew A. Broome +4
Chemistry · Engineering · Materials Science · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Atomic physics #Chemistry #Condensed matter physics #Electron #Graphene research and applications #Hyperfine structure #Nuclear physics #Physics #Quantum and electron transport phenomena #Spin (aerodynamics) #Spins #cond-mat.mes-hall #quant-ph

paper · pdf · doi:10.1103/physrevb.92.125413

published as Phys. Rev. B, 92, 125413, 2015 · 10 pages, 6 figures

openalex publication_date 2015/09/10 · arxiv created 2015/09/17 · arxiv updated 2015/09/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We present an analysis of electron transport through two weakly coupled precision-placed phosphorus donors in silicon. In particular, we examine the (1,1)\ensuremath↔(0,2) charge transition where we predict a type of current blockade driven entirely by the nuclear spin dynamics. Using this nuclear spin blockade mechanism, we devise a protocol to read out the state of single nuclear spins using electron-transport measurements only. We extend our model to include realistic effects such as Stark shifted hyperfine interactions and multidonor clusters. In the case of multidonor clusters we show how nuclear spin blockade can be alleviated, allowing for low magnetic field electron-spin measurements.

Citations

• Two-dimensional architectures for donor-based quantum computing
• A single-atom electron spin qubit in silicon
• Robust Two-Qubit Gates for Donors in Silicon Controlled by Hyperfine Interactions
• Quantum communication through spin chain dynamics: an introductory overview
• Exchange in Silicon-Based Quantum Computer Architecture
• Coherent Manipulation of Coupled Electron Spins in Semiconductor Quantum Dots
• Control and Detection of Singlet-Triplet Mixing in a Random Nuclear Field