Events

Alain Aspect, Institut d'Optique

From Einstein to Wheeler: wave particle duality for a photon

Join us for the next Quantum Frontiers Distinguished Lecture Series when Dr. Alain Aspect will talk about the weirdness of wave particle duality.

Anirudh of the Department of Physics and Astronomy will be defending his thesis:

Experimentally Testable Noncontextuality Inequalities via Fourier-Motzkin Elimination.

Jihyun is supervised by Professors Joseph Emerson and Robert Spekkens.

Joseph Salfi, University of New South Wales

The behavior of conventional transistors derives from large numbers of acceptor and donor impurities that promote carriers into the valence and conduction bands. More recently, nano-electronic devices based on the bound states of individual dopant impurities in silicon have received considerable attention for quantum computation, due to the long spin coherence times of dopants in silicon. This invariably requires control over dopant wavefunctions and the interactions between individual dopants [1].

Measurement-induced localization of an ultracold lattice gas

Mukund Vengalattore, Cornell University

The act of observation has profound consequences on a quantum system. I will describe our experimental demonstration of a Heisenberg microscope based on nondestructive imaging of a lattice gas. We show that the act of imaging these atoms induces their localization - a manifestation of the quantum Zeno effect.

Applications of order isomorphisms of C*-algebras

Fred Shultz, Wellesley College

We will review known results about order isomorphisms of C*-algebras,
and will describe some applications to complete positivity of maps and
a generalization of the Choi matrix. (This is joint work with Vern Paulsen.)
Then we will describe some applications to quantum information theory.

What are the properties of the electromagnetic field radiated by a quantum conductor, or how to generate entangled radiation with a normal metal ?

Bertrand Reulet, University of Sherbrooke

​A classical current in a conductor radiates a classical electromagnetic field. We explore some properties of the field radiated by a conductor when electron transport must be described by quantum mechanics, i.e. when the electron current becomes quantum itself.

Join us for two days at the Institute for Quantum Computing (IQC) for the Teaching Quantum Technology workshop (TQT) December 5-6. You will have the opportunity to attend lectures and engage in hands-on activities focused on the integration of quantum technology into the current teaching curriculum. We will discuss quantum information science and technology to give you a deeper understanding of quantum mechanics.

Jamie Sikora, Centre for Quantum Technologies, National University of Singapore

In this talk, I will discuss correlations that can be generated by performing local measurements on bipartite quantum systems. I'll present an algebraic characterization of the set of quantum correlations which allows us to identify an easy-to-compute lower bound on the smallest Hilbert space dimension needed to generate a quantum correlation. I will then discuss some examples showing the tightness of our lower bound.

Separations in query complexity using cheat sheets

Shalev Ben-David, Massachusetts Institute of Technology (MIT)

We show a power 2.5 separation between bounded-error randomized and quantum query complexity for a total Boolean function, refuting the widely believed conjecture that the best such separation could only be quadratic (from Grover's algorithm). We also present a total function with a power 4 separation between quantum query complexity and approximate polynomial degree, showing severe limitations on the power of the polynomial method.