Current undergraduate students

A Monochromatic Atom-wide Electron Probe for Nanoscale Materials Excitations

Maureen Joel Lagos
Department of Materials Science and Engineering
Canadian Centre for Electron Microscopy
McMaster University, Ontario, Canada

Wednesday, October 2, 2019
2:30 p.m.
C2-361 (Reading Room)

Abstract: 

Security in the Quantum Future

Quantum theory is quickly becoming quantum technology.

David Snoke, University of Pittsburgh

Much of our intuition about light comes from our experience that light has very weak interaction with other light—a beam of light easily passes through another beam of light, so that the Star Wars scenes of “light sabers” bouncing off each other are just imaginary. But in solids, the properties of light can be changed dramatically, especially in solids that we design for new effects.

Michael Chen

Designing control pulses to generate desired unitary evolution subjugated to experimental constraints (e.g., decoherence time, bandwidth) is a common task for quantum platforms, these type of problems are often addressed in the context of quantum optimal control. Parallel Automatic Differentiation Quantum Optimal Control (PADQOC) is an open-source, Python based general quantum optimal control solver built on top of Tensorflow 2. It is designed to be fast, extensible and useful for controlling general quantum systems.

David Reichmuth, Heriot-Watt University

One-out-of-two (1-2) oblivious transfer is a cryptographic primitive, in which a sender holds two bits, x0 and x1, and a receiver receives one of them, in such a way that the receiver does not know both bits, and the sender does not know which bit the receiver obtained. While information-theoretical security for quantum versions of such protocols is not possible, it is of interest to examine possible security bounds, which previous work has shown to be set at 0.749 in “complete” protocols employing pure symmetric states.

Yichen Huang - Microsoft Research

We present two concrete examples where the Renyi rather than just the von Neumann entanglement entropy is necessary in order to obtain certain insights into quantum many-body systems.

Meenu Kumari

Nonlocality is a useful quantum resource in applications such as quantum key distribution and quantum random number generation. We study nonlocality in a multi-qubit model—quantum kicked top (QKT). This system is of particular interest because it displays regular behavior, bifurcations and chaotic behavior in the classical limit, and is one of the few chaotic systems that has been experimentally realized.

Andrea Coladangelo, Caltech

In a non-local game, two or more non-communicating, but entangled, players cooperatively try to win a game consisting of a one-round interaction with a classical referee. In this talk, I will describe a two-player non-local game with the property that an epsilon-close to optimal strategy requires the players to share an entangled state of dimension 2^{1/poly(epsilon)}.

“Quantum physics” has taken its position with “rocket science” in pop culture as a shorthand for frighteningly complicated science. Quantum physics has also taken on a sort of magical connotation in fiction, with features like entanglement, superposition, and tunneling, spurring imagination. But where does the science draw the line? How much is joyful speculation, and how much is disregard for reality? And if it’s always seen as either magical or scary, how does that affect the perception of quantum science?

Co-organized by the National Research Council of Canada 

The meeting brings together the Canadian community of scientists and engineers who perform research and development on spin-based quantum technologies. This will be the third annual workshop, with the main goal to foster spin qubit research and attract and train highly qualified personnel for the emerging quantum technologies sector in Canada.