TQT Transformative Quantum Technologies logo
Login
  • En
  • Fr
Get Connected
TQT Transformative Quantum Technologies logo
Login
Get Connected

"Find People, Projects, etc."

Generic selectors
Exact matches only
Search in title
Search in content
Post Type Selectors
job
publications
equipment
media
research
projects
people
events
labs
Filter by Categories
Committee
Leadership
Science
Staff
  • Home
  • Research
  • Opportunities
  • Events
  • About
  • Get Connected
  • Institute for Quantum Computing

    Combined momentum- and real-space photoelectric probes of dimensionality-tuned Weyl semimetals

    Go Back Back

    More Topics

    2d 3d ARPES heterostructures joint project materials MoTe2 new ideas nodes seed fund semimetals topological transport UBC Weyl

    Summary

     

    The library of two-dimensional (2D) materials has recently grown to include topological insulators and semimetals. Their incorporation in special device geometries may lead to novel quantum electronics with enhanced functionalities. Weyl semimetals, in particular, offer the most robust form of topological protection. Recent results from our group indicate that Weyl nodes should be observable at room temperature in thin molybdenum ditelluride (MoTe2) and are furthermore tunable by changing dimensionality. Weyl nodes correspond to points of bulk band degeneracy and are separated in momentum space. In this joint project with Dr. Andrea Damascelli’s group at the University of British Columbia (UBC), we utilize micro-angle-resolved photoemission spectroscopy (micro-ARPES) to image in momentum space the Weyl nodes and surface arcs of MoTe2 and further investigate changes induced by lower dimensionality. Once the Weyl nodes are mapped, we perform transport measurements and utilize scanning photocurrent microscopy to image novel photogalvanic effects induced by the Weyl points in real space. We expect this project will pave the way for future materials exploration and device development that exploits the unique properties of 2D materials through combined ARPES and nanoscale device transport studies.

    Figure 1. Sample device geometry. MoTe2 flakes of various thicknesses are transferred on prepatterned gold electrodes deposited on a hexagonal boron nitride (BN)/graphite (Gr) heterostructure and capped with single-layer hBN. The bottom layers provide an ultra-flat substrate for the MoTe2.

     

    Principal Investigator (PI) or Team Coordinator

    Adam Wei Tsen

    sidebar icon sidebar icon sidebar icon

    Share

    • Share on Twitter
    • Share on Facebook
    • Share on LinkedIn

    Related Content

    Development of Terahertz Polariton Lasers

    Development of Terahertz Polariton Lasers

    Theoretical and experimental results show that the polariton lasing mechanism is a promising basis for a compact, efficient source of terahertz radiation.

    July 1, 2017

    PI: Zbigniew Wasilewski

    Skip Tags electrical & computer engineering new ideas + 2 Additional

    • Share on Twitter
    • Share on Facebook
    • Share on LinkedIn
    • Go to Development of Terahertz Polariton Lasers
    Metasurfaces for high-efficiency parametric downconversion and complex quantum state generation

    Metasurfaces for high-efficiency parametric downconversion and complex quantum state generation

    Summary  Entangled photon sources are crucial for quantum computing, quantum sensing, and quantum communication. Of growing importance are sources relying on spontaneous parametric downconversion (SPDC). Unfortunately, these sources of entangled photons are often constrained by momentum conservation laws. To overcome this limitation and expand the possibility of quantum state engineering, we intend to use metasurfaces […]

    February 1, 2023

    PI: Zbig Wasilewski

    Skip Tags entangled photons quantum processing + 1 Additional

    • Share on Twitter
    • Share on Facebook
    • Share on LinkedIn
    • Go to Metasurfaces for high-efficiency parametric downconversion and complex quantum state generation
    Rydberg Atom Array Quantum Simulator
    TQT Computation

    Rydberg Atom Array Quantum Simulator

    Summary  Quantum simulators enable probing the static and dynamic properties of correlated quantum many-body systems that would otherwise be numerically inaccessible using classical simulators. We are developing quantum simulators based on arrays of neutral atoms excited to Rydberg states. Such Rydberg atom arrays are advantageous for simulating the dynamics of interacting spin systems (Ising spin […]

    February 27, 2020

    PI: Alexandre Cooper-Roy

    Skip Tags atom arrays computation + 8 Additional

    • Share on Twitter
    • Share on Facebook
    • Share on LinkedIn
    • Go to Rydberg Atom Array Quantum Simulator
    Quantum Sensing with Small Quantum Systems
    TQT Sensing

    Quantum Sensing with Small Quantum Systems

    Summary   There are small quantum systems over which we have very good control and which have long lifetimes. Examples include the phosphorous (P) defect in silicon (Si) and the nitrogen vacancy (NV) defect in diamond. With P defect in Si, we focus on improving our understanding of the hyperpolarization mechanism to better enable engineering of […]

    December 1, 2016

    PI: David Cory

    Skip Tags chemistry grand challenge + 6 Additional

    • Share on Twitter
    • Share on Facebook
    • Share on LinkedIn
    • Go to Quantum Sensing with Small Quantum Systems

    Connect with Us

    Join us at the frontier of quantum technology development. Request a visit, explore opportunities, and stay informed.

    Get Connected
    TQT Logo
    First Canada Logo
    • twitter icon
    • facebook icon
    • youtube icon
    • Home
    • Research
    • Opportunities
    • Events
    • About
    • Get Connected
    • Institute for Quantum Computing
    TQT Logo
    • Home
    • Research
    • Opportunities
    • Events
    • About
    • Get Connected
    • Institute for Quantum Computing
    • twitter icon
    • facebook icon
    • youtube icon
    First Canada Logo
    TQT Logo
    • twitter icon
    • facebook icon
    • youtube icon
    • Research
    • Overview
    • Updates
    • Projects
    • Publications
    • Labs
    • Quantum Innovation Cycle
    • Opportunities
    • Overview
    • Quantum for Health Design Challenge
    • Quantum for Environment Design Challenge
    • Quantum Seed
    • Technology Development
    • Open Positions
    • Events
    • All Events
    • About
    • Overview
    • People
    • Media
    • Contact
    First Canada Logo