Current graduate students

Extended nonlocal games from quantum-classical

Vincent Russo, IQC

Several variants of nonlocal games have been considered in the study of quantum entanglement and nonlocality. In this talk, we shall consider two such variants called quantum-classical games and extended nonlocal games. The players, Alice and Bob, may play the game according to various classes of strategies. An entangled strategy is one in which Alice and Bob use quantum resources in the form of a shared quantum state and sets of measurements. One may ask whether the dimension of the shared state makes a difference in how well the players can perform using an entangled strategy.

Metal-oxide-semiconductor (MOS) Si quantum dots

Greg Holloway, IQC

Electrostatically defined quantum dots provide a flexible implementation for scalable spin-based quantum information processing. Recently Si has emerged as a promising platform for these systems, due to its long electron spin coherence times, and its compatibility with numerous fabrication processes. In this talk I will give a detailed description of the device architecture, as well as a description of transport through Si quantum dots.

Public lecture by Charles W. Clark

Much of what we understand about the world comes from our eyes, which sense the colors from red to violet that are expressed in the rainbow.

Come get your nerd on and learn about the world of physics with Nerd Nite KW! They will take you through quantum 101, and then see if you were paying attention with some friendly rounds of trivia. Aspiring scientists and experts alike are welcome. Special guest speaker Dr. Shohini Ghose, an Associate Professor of Physics and Computer Science and Director of the Centre for Women in Science at Wilfrid Laurier University in Canada, will also be giving a presentation. Make sure to also check out QUANTUM: The Exhibition while you're there.

Efficient Fault-Tolerant Quantum Computing

Martin Suchara, AT&T Labs Research

Quantum error correction presents some of the most significant and interesting challenges that must be resolved before building an efficient quantum computer. Quantum error correcting codes allow to successfully run quantum algorithms on unreliable quantum hardware. Because quantum hardware suffers from errors such as decoherence, leakage or qubit loss, and these errors corrupt delicate quantum states rather than binary information, the known error correction techniques are complex and have a high overhead. 

Continuous-variable quantum communication activities in Erlangen, Germany

Imran Khan, Max Planck Institute for the Science of Light

I will present our ongoing work on the subject of experimental quantum

communication using continuous variables, which is conducted at the Max

Planck Institute for the Science of Light in Erlangen, Germany. The work

is performed in the Quantum Information Processing group of Dr.

Christoph Marquardt within the division of Prof. Dr. Gerd Leuchs.

My talk will encompass the following topics:

Superchiral Field, Phase Modulation, Optical Cloaking

Joseph Choi, University of Rochester

Quantum mechanical or classical interactions between light and matter can demonstrate interesting effects even in simplified models. I will present three such works. The first is a semi-classical theory that corrects the enhancement from a "superchiral" field, by including the magnetic susceptibility term which is usually ignored because of how small it is.

Razieh Annabestani of the Department of Physics and Astronomy is defending his thesis:

Collective Dynamics in NMR and Quantum Noise

Razieh is supervised by Professor David Cory.

Single-photon implementation of an indefinite causal order

Lorenzo M. Procopio, University of Vienna

Investigating the role of causal order in quantum mechanics has recently revealed that the temporal distribution of events may not be a-priori well-defined in quantum theory. Although this has triggered a growing interest on the theoretical side, the existence of processes without a causal order is an experimental question. In this talk, I will present an optical implementation of an indefinite causal-order structure called quantum switch for two purposes; to execute an algorithm and to verify a causally non-separable process.

Chiral Atomically Thin Films

Cheol-Joo Kim, Cornell University

Chiral materials possess left- and right-handed counterparts linked by mirror symmetry. These materials are useful for advanced applications in polarization optics[1,2], stereochemistry[3,4] and spintronics[5]. In particular, the realization of spatially uniform chiral films with atomic-scale control of their handedness could provide a powerful means for developing nanodevices with novel chiral properties.