Observing Quantum Nonlocality of Non-Abelian Anyons in a Van der Waals Heterostructure
Abstract
This proposal aims to observe the predicted non-local properties of non-abelian anyons such as the Majorana fermion. While recent experimental progress has determined the existence of the Majorana fermion in condensed matter systems, the nonlocality of the bound state has not been definitively observed. This property is essential to the numerous theoretical proposals harnessing non-abelian anyons for topological quantum computing. This project will provide substantial proof for the non-local nature of the Majorana bound state (MBS) and further engineer a hybrid system coupling topological and charge qubits. The work will not only expand the catalogue of quantum information science in Nevada but, importantly, open new lines of research at UNLV that are of interest to the DoD. The project will develop increasing complex devices over the course of the four-year funding period to determine the nonlocality of the MBS and engineer a hybrid topological-charge qubit with microwave readout. In the first stage of the research, we will build on our preliminary results of a topological crystalline insulator in a van der Waals heterostructure and create a strong topological insulating phase in trilayer graphene through proximity effects. The necessary topological superconductivity required for manifestation of Majorana defects will be determined using Fraunhofer spectroscopy. In the second stage of research, we will modify our unique topological superconducting device to include electrostatic gates to sever the 1D edge states into a 1D wire. Using tunneling spectroscopy, we will look for evidence of the Majorana bound state at the ends of this wire. Further modifying the device in the third stage of research, we will create an interferometer to observe the non-local properties of the MBS through electron teleportation measurements. Characterization of the flux dependence of our interferometer will provide irrefutable proof of this character directly supporting the multitude of theoretical proposals for topological qubits. Finally, we will combine both topological and charge qubits in a high-quality factor waveguide resonator to achieve facile readout and characterization of the coupled system. Our proposed device takes advantage of the developments in circuit quantum electrodynamics and extends them to a topological qubit in a hybrid system. Aligning with the purpose of this FOA, The PI will tap into the rich diversity of the student body at UNLV and the local population of southern Nevada to target improving representation of women and minorities in STEM fields. UNLV provides a unique environment to undertake this challenge as the student body is composed of primarily women and minority students. The PI will actively recruit at the undergraduate level from the Multicultural and Louis Stokes Alliance for Minority Participation (LSAMP) groups at UNLV. Peer-mentorship will be placed at the forefront which is decisive in retaining minorities in science. The PI has a strong track record of promoting underrepresented groups in science and this project will be a continuation of that success. The research here will feed into a long-term goal of investigating hybrid quantum systems for quantum computing. This project will serve as a steppingstone toward further future funding and student development in quantum science.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 28, 2023
- Source ID
- W911NF2310160
Entities
People
- Joshua O. Island
Organizations
- Army Contracting Command
- Office of the Secretary of Defense
- University of Nevada, Las Vegas