PhD Candidate: Ian Hincks
Supervisors: David Cory, Joseph Emerson
Thesis available from MGO - mgo@uwaterloo.ca
Speaker: Twesh Upadhyaya
Colloquium
Interested in learning more about the Transformative Quantum Technologies (TQT) initiative? Attend the TQT information session from 1:00 – 3:00 PM in the RAC 2 Quiet Labs foyer. Please join us to learn about TQT’s program opportunities, latest research developments and future directions.
Understanding the interplay of non-equilibrium effects, dissipation and many body interactions is a fundamental challenge in condensed matter physics. In this work, as a case study, we focus on the transient dynamics and the steady state characteristics of the double-dot Aharonov-Bohm (AB) interferometer subjected to a voltage and/or temperature bias. We first consider an exactly solvable case, the noninteracting double-dot AB interferometer.
We present a verifiable and blind protocol for assisted universal quantum computing on continuous-variable (CV) platforms. This protocol is highly experimentally-friendly to the client, as it only requires Gaussianoperation capabilities from the latter. Moreover, the server is not required universal quantum-computational power either, its only function being to supply the client with copies of a single-mode non-Gaussian state. Universality is attained based on state-injection of the serverʼs non-Gaussian supplies.
Rydberg atoms, which possess large-dipole moments and the resulting strong dipole- dipole interactions, have been intensively investigated owing to its potential applications in diverse fields ranging from quantum nonlinear optics to quantum information and computation. Exclusive examples includes photon blockade, attractive photons and single-photon transistors, to mention a few.
We devise an all-optical scheme for the generation of entangled multimode photonic states encoded in temporal modes of light. The scheme employs a nonlinear down-conversion process in an optical loop to generate one- and higher-dimensional tensor network states of light. We illustrate the principle with the generation of two different classes of entangled tensor network states and report on a variational algorithm to simulate the ground-state physics of many-body systems.
In recent years, the magnetic random-access memory (MRAM) have been attracting attention as a next generation memory device due to their fast switching speed and non-volatility characteristics. The biggest challenge for the switching device using a magnetic material is an easy magnetization reversal.
Topological insulators are electronic systems with an insulating bulk and topologically protected boundary states. Conventional 2D topological insulators induce 1D edge states. Recent studies indicate that lower-dimensional topological states are also possible in electronic systems, which, however, has been confirmed only in Bismuth in experiments [1].