Scaling topological qubits in van der Waals heterostructures
Abstract
Scaling topological qubits in van der Waals heterostructuresProposal to the Office of Naval ResearchPrincipal Investigator: Andrea Y,oung, University of California, Santa BarbaraProgram officer: Ian Appelbaum, Code 312Bilayer graphene is the best platform in which,to build a working topological qubit. Energy gaps for non-Abelian ground states are as large as 5 Kelvin, much larger than in compet,ing systems based on semiconductor quantum wells and nanowires. New nanofabrication and assembly techniques now allow for single any,on confinement, braiding, and fusion to be realized. In addition, recent advances in quantum engineering via microwave circuitry, de,veloped for precise control of spin and superconducting qubits, are ripe for deployment for fundamentally more coherent topo-logical, qubits in van der Waals materials. While fabrication techniques for van der Waals remain largely manual, we note that even without,improvements our architecture can be scaled to 100-1000 physical qubits, which, given realistic assumptions, are likely to break rec,ords for quantum volume, a combined metric of qubit count and coherence.This proposal seeks support for a three-year effort to perfo,rm fundamental demonstrations of the underlying technology and begin the path towards scaling. In this proposal, we provide backgrou,nd on the physics and fabrication of these devices, measurement geometry, and expected milestones under this program. This effort wo,uld complement and leverage a ?measurement only? approach to the same problem under an AFOSR-sponsored PECASE award and a separate p,ro-posed DURIP program for basic cryogenic instrumentation to be dedicated to this project.Project Abstract - Publicly Releasable
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Dec 06, 2022
- Source ID
- N000142312066
Entities
People
- Andrea Young
Organizations
- Office of Naval Research
- United States Navy
- University of California, Santa Barbara