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Amir Jafari-Salim, IQC

In this talk, I will give a summary of my recent research on superconducting nanostructures for quantum detection of electromagnetic radiation. In this regard, electrodynamics of topological excitations in 1D superconducting nanowires and 2D superconducting nanostrips is investigated. Topological excitations in superconducting nanowires and nanostrips lead to crucial deviation from the bulk properties.

Monday, April 21, 2014 1:00 pm - 1:00 pm EDT (GMT -04:00)

Imai: NMR as a low energy probe of condensed matter

Takashi Imai, McMaster University

NMR (Nuclear Magnetic Resonance) is a versatile probe of condensed matter, and has a broad range of applications in chemistry, medicine (MRI), oil industry, etc. NMR has become so popular outside the conventional realm of physics that the crucial role NMR has been playing in condensed matter physics is sometimes overlooked. I will explain how condensed matter physicists use NMR as a powerful low energy probe of solids, drawing examples from modern research into statistical physics, magnetism, and superconductivity.

Tuesday, April 22, 2014 11:00 am - 12:00 pm EDT (GMT -04:00)

Hilke: Graphene growth and characterization for device applications

Michael Hilke, McGill University

We will review several proof of principle applications for graphene based devices performed in our group, including in field sensors, electronics, THz spectroscopy, spintronics, nanofluidics, and even musical instruments. We will then discuss the synthesis mechanism of graphene as well as the synthesis of very large single layered graphene monocrystals with various shapes, ranging from hexagons to fractals, dubbed graphlocons.

Monday, April 28, 2014 11:00 am - 12:00 pm EDT (GMT -04:00)

Stobinska: Quantum state engineering of multiphoton quantum superpositions

Magdalena Stobinska, University of Gdańsk/Polish Academy of Sciences, Warsaw

We discuss a device capable of filtering out two-mode states of light with mode populations differing by more than a certain threshold, while not revealing which mode is more populated. It would allow engineering of macroscopic quantum states of light in a way which is preserving specific superpositions. As a result, it would enhance optical phase estimation with these states. We propose an optical scheme, which is a relatively simple, albeit non-ideal, operational implementation of such a filter.

Monday, May 5, 2014 2:30 pm - 3:30 pm EDT (GMT -04:00)

Pappas: Quantum Information, Surfaces, and Interfaces

David P. Pappas, NIST

Progress in the field of experimental quantum information processing has been steady over the past decade with important developments continuing to be made in the understanding, design, and measurement of systems at the quantum level. As the boundaries of these measurements are pushed, we are finding that surface and interfacial properties play an increasingly important role. In general, this field has benefitted immensely from advances in VLSI.

Tuesday, May 6, 2014 4:00 pm - 5:30 pm EDT (GMT -04:00)

Quantum Industry Lecture Series: Jonathan Hodges

IQC presents the first in a series of lectures from members of industry in quantum computing and quantum information. Jonathan Hodges, VP of engineering for Diamond Nanotechnologies, will be speaking about his research as well as the day-to-day realities of working in industry. You can learn more about the company here: http://www.diamondnanotechnologies.com/

Monday, May 12, 2014 2:30 pm - 3:30 pm EDT (GMT -04:00)

Fawzi: Achieving the limits of the bounded/noisy quantum-storage model

Omar Fawzi, McGill University

The goal of two-party cryptography is to enable Alice and Bob to solve tasks in cooperation even if they do not trust each other. Examples of such tasks include bit commitment, coin flipping and oblivious transfer. Unfortunately, it has been shown that even using quantum communication, none of these tasks can be implemented when the adversary is completely general.

Wednesday, May 21, 2014 1:00 pm - 2:00 pm EDT (GMT -04:00)

Elkouss: Analysis of a rate-adaptive reconciliation protocol

David Elkouss, Universidad Complutense de Madrid

"Quantum key distribution performs the trick of growing a secret key in two distant places connected by a quantum channel. In practical systems, whether because of finite resources or external conditions, the quantum channel is subject to fluctuations. A rate adaptive information reconciliation protocol, that adapts to the changes in the communication channel, is then required to minimize the leakage of information in the classical postprocessing.

Monday, May 26, 2014 12:00 am - Friday, June 6, 2014 12:00 am EDT (GMT -04:00)

Undergraduate School on Experimental Quantum Information Processing (USEQIP)

The Undergraduate School on Experimental Quantum Information Processing (USEQIP) is a two-week program on the theoretical and experimental study of quantum information aimed primarily at students completing their third undergraduate year. The lectures and experiments are geared toward students in engineering, physics, chemistry, mathematics and computer science, though all interested students are invited to apply.

Monday, May 26, 2014 2:30 pm - 3:30 pm EDT (GMT -04:00)

Xiaodong Xu: Spin and pseudospins in 2D semiconductors

Xiaodong Xu, The University of Washington

Electronic valleys are extrema of Bloch energy bands in momentum space. Having multiple valleys gives the electron states pseudospin degrees of freedom in addition to their real spin. In this talk, I will discuss our experimental progress on the investigation of spins and pseudospins using atomically thin semiconductors, which are either single or bilayer group VI transition metal dichalcogenides.