Physics-Informed Optimisation of Conveyor Mode Spin Qubit Transport

• URL: http://arxiv.org/abs/2510.06943v1
• Date: Wed, 08 Oct 2025 12:27:14 GMT
• Title: Physics-Informed Optimisation of Conveyor Mode Spin Qubit Transport
• Authors: Andrii Sokolov, Conor Power, Elena Blokhina,
• Abstract summary: We present a physics-informed algorithm for optimizing electrostatic bias equences that enable conveyor-mode electron transport in silicon-based quantum dot devices.<n>Our approach combines self-consistent Poisson and Schrodinger solvers to maintain a constant ground state energy and enable near-constant velocity shuttling.<n>We validate the algorithm across three representative technologies: Fully-Depleted Silicon on Insulator (FD-SOI), Silicon Metal-Oxide-Seminconductor (SiMOS) and Silicon-Germanium Heterostracture (Si/SiGe)
• Score: 0.061173711613792085
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Scalable quantum information processing in spin-based architectures necessitates the a bility to reliably shuttle quantum states across extended device regions with minimal decoherence. In this work, we present a physics-informed algorithm for optimizing electrostatic bias equences that enable conveyor-mode electron transport in silicon-based quantum dot devices. Our approach combines self-consistent Poisson and Schrodinger solvers to maintain a constant ground state energy and enable near-constant velocity shuttling, with potential applicability to both single-electron and hole transport. We validate the algorithm across three representative technologies: Fully-Depleted Silicon on Insulator (FD-SOI), Silicon Metal-Oxide-Seminconductor (SiMOS) and Silicon-Germanium Heterostracture (Si/SiGe), highlighting key limitations and material-specific effects that influence transport fidelity. Our findings underscore the impact of gate geometry, dielectric interfaces, and quantum dot size on the stability of shuttling operations, and offer pathways toward improving coherence preservation in large-scale quantum systems.

Related papers

• Digital Quantum Simulation of Flat-Band and All-Bands-Flat Dynamics for Tunable Quantum Transport [0.0]
  We present high-fidelity digital quantum simulations of flat-band (FB) and all-bands-flat (ABF) lattices.<n>We achieve controllable quantum transport, where the ABF lattice acts as a quantum switch.<n>These results establish flat-band engineered systems as a promising pathway for scalable control of quantum transport in emerging quantum technologies.
  arXiv  Detail & Related papers  (2025-08-12T08:27:17Z)
• Approximate quantum circuit compilation for proton-transfer kinetics on quantum processors [0.7147139889072891]
  We develop and demonstrate quantum computing algorithms based on the Nuclear-Electronic Orbital framework.<n>We assess the potential of current quantum devices for simulating proton transfer kinetics with high accuracy.
  arXiv  Detail & Related papers  (2025-07-11T19:56:43Z)
• Electron-Electron Interactions in Device Simulation via Non-equilibrium Green's Functions and the GW Approximation [71.63026504030766]
  electron-electron (e-e) interactions must be explicitly incorporated in quantum transport simulation.<n>This study is the first one reporting large-scale atomistic quantum transport simulations of nano-devices under non-equilibrium conditions.
  arXiv  Detail & Related papers  (2024-12-17T15:05:33Z)
• Deep Learning Accelerated Quantum Transport Simulations in Nanoelectronics: From Break Junctions to Field-Effect Transistors [7.377639942466163]
  DeePTB-NEGF is an integrated framework combining deep learning tight-binding Hamiltonian prediction with non-equilibrium Green's Function methodology.<n>We demonstrate it through two challenging applications: comprehensive break junction simulations and carbon nanotube field-effect transistors.
  arXiv  Detail & Related papers  (2024-11-13T17:27:32Z)
• Transport properties and quantum phase transitions in one-dimensional superconductor-ferromagnetic insulator heterostructures [44.99833362998488]
  We propose a one-dimensional electronic nanodevice inspired in recently fabricated semiconductor-superconductor-ferromagnetic insulator hybrids. We show that the device can be tuned across spin- and fermion parity-changing QPTs by adjusting the FMI layer length orange and/or by applying a global backgate voltage. Our findings suggest that these effects are experimentally accessible and offer a robust platform for studying quantum phase transitions in hybrid nanowires.
  arXiv  Detail & Related papers  (2024-10-18T22:25:50Z)
• Thermalization and Criticality on an Analog-Digital Quantum Simulator [133.58336306417294]
  We present a quantum simulator comprising 69 superconducting qubits which supports both universal quantum gates and high-fidelity analog evolution. We observe signatures of the classical Kosterlitz-Thouless phase transition, as well as strong deviations from Kibble-Zurek scaling predictions. We digitally prepare the system in pairwise-entangled dimer states and image the transport of energy and vorticity during thermalization.
  arXiv  Detail & Related papers  (2024-05-27T17:40:39Z)
• From Goldilocks to Twin Peaks: multiple optimal regimes for quantum transport in disordered networks [68.8204255655161]
  Open quantum systems theory has been successfully applied to predict the existence of environmental noise-assisted quantum transport. This paper shows that a consistent subset of physically modelled transport networks can have at least two ENAQT peaks in their steady state transport efficiency.
  arXiv  Detail & Related papers  (2022-10-21T10:57:16Z)
• Jellybean quantum dots in silicon for qubit coupling and on-chip quantum chemistry [0.6818394664182874]
  Small size and excellent integrability of silicon metal-oxide-semiconductor (SiMOS) quantum dot spin qubits make them an attractive system for mass-manufacturable, scaled-up quantum processors. This paper investigates the charge and spin characteristics of an elongated quantum dot for the prospects of acting as a qubit-qubit coupler.
  arXiv  Detail & Related papers  (2022-08-08T12:24:46Z)
• Simulation of interaction-induced chiral topological dynamics on a digital quantum computer [3.205614282399206]
  Chiral edge states are sought-after as paradigmatic topological states relevant to quantum information processing and electron transport. We demonstrate chiral topological propagation that is induced by suitably designed interactions, instead of flux or spin-orbit coupling. By taking advantage of the quantum nature of the platform, we circumvented difficulties from the limited qubit number and gate fidelity in present-day noisy intermediate-scale quantum (NISQ)-era quantum computers.
  arXiv  Detail & Related papers  (2022-07-28T18:00:29Z)
• A scalable superconducting quantum simulator with long-range connectivity based on a photonic bandgap metamaterial [0.0]
  We present a quantum simulator architecture based on a linear array of qubits locally connected to a superconducting photonic-bandgap metamaterial. The metamaterial acts both as a quantum bus mediating qubit-qubit interactions, and as a readout channel for multiplexed qubit-state measurement. We characterize the Hamiltonian of the system using a measurement-efficient protocol based on quantum many-body chaos.
  arXiv  Detail & Related papers  (2022-06-26T06:51:54Z)
• A quantum processor based on coherent transport of entangled atom arrays [44.62475518267084]
  We show a quantum processor with dynamic, nonlocal connectivity, in which entangled qubits are coherently transported in a highly parallel manner. We use this architecture to realize programmable generation of entangled graph states such as cluster states and a 7-qubit Steane code state.
  arXiv  Detail & Related papers  (2021-12-07T19:00:00Z)
• Entanglement generation via power-of-SWAP operations between dynamic electron-spin qubits [62.997667081978825]
  Surface acoustic waves (SAWs) can create moving quantum dots in piezoelectric materials. We show how electron-spin qubits located on dynamic quantum dots can be entangled.
  arXiv  Detail & Related papers  (2020-01-15T19:00:01Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.