2D Electronic Materials for Quantum Science and Quantum Functions
Abstract
Individual sheets of atoms known as atomic layers are interesting because science has revealed new physical properties upon thinning layered materials to one or few atomic layers, and the possibility of engineering new device characteristics by stacking such atomic layers of different materials. This field of Ò2D materialsÓ has experienced explosive growth because such materials are now viewed as future platforms for a wide number of varied applications. This proposal focuses on examining quantum science and realizing some quantum functions in 2D materials. Photo-excited electrical studies of 2D materials can help uncover novel phenomena while helping to determine the physical characteristics of fundamental and composite particles. Thus, this project aims to study photo-excited transport for electrons/holes and composite fermions in the linearly dispersed monolayer graphene system and in the parabolic bilayer graphene systems, as well as in the flat bands of small angle twisted bi-layer graphene system. An aim here is to determine the dependence of the fundamental field for the microwave/terahertz radiation induced oscillations on the Fermi wave vector in monolayer graphene and Bernal stacked bilayer graphene. In the twisted bilayer graphene system, one aim is to characterize the velocity renormalization vs. the twist angle. Quantum entanglement is a special type of correlation that occurs among a set of particles when the quantum state of a given particle cannot be described independently of the quantum state of the others. In a bid to realize quantum functions, this project aims to use photo-emission from 2D materials to realize entangled microwave photons- a needed quantum resource for quantum applications. In one approach, four wave mixing in linearly dispersed 2D materials in a magnetic field will serve to produce polarization entangled microwave photons. In another approach, a NbSe2 SQUID terminated coplanar waveguide in a flux-driven Josephson parametric amplifier will serve to produce entangled microwave photons in a two-mode squeezed state. This research project will be carried out at the Physics & Astronomy Department of Georgia State University [GSU], a Title III-V predominantly black institution, and one of the most diverse universities in the nation. Ongoing STEM educational components will help translate the abilities of general university students into the pursuit of a career path or a graduate degree in a STEM field, by providing them early exposure to research experience through mini-science projects and extra credit for work in the PIÕs lab. The PI also participates in the ArmyÕs High School Apprenticeship (HSAP) and Undergraduate Research Apprenticeship Programs (URAP), which provide paid summer lab-research apprenticeships to high school students and undergraduates, and hosts visiting undergraduates at GSUÕs NSF-Research Experience for Undergraduates (REU) program. In other aspects, the PI will develop outreach to local high school science teachers, increase their mutual interactions and exposure to experimental science, and bring in even more high school students to carry out experiments at GSU for science fair projects/science talent search competitions. All these efforts in tandem ensure a broad diversity of interacting students at the PIÕs Nanoscience, Low Temperature and High Magnetic Field Laboratory. Such education/training in a southern urban inner-city environment will add heterogeneity to the nationÕs science and technology skill base and fill the pipeline with future quantum ready professionals.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 28, 2023
- Source ID
- W911NF2310203
Entities
People
- Ramesh Mani
Organizations
- Army Contracting Command
- Georgia State University
- Office of the Secretary of Defense