Faculty

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.

Volkher Scholz, Institute for Theoretical Physics ETH Zurich

We derive new Heisenberg-type uncertainty relations for both joint measurability and the error- disturbance tradeoff for arbitrary observables of finite-dimensional systems. The relations are formulated in terms of a directly operational quantity, namely the probability of distinguishing the actual operation of a device from its hypothetical ideal, by any possible testing procedure whatsoever.

Tuesday, April 8, 2014 11:00 am - 11:00 am EDT (GMT -04:00)

Fan: Quantum receivers beyond the stand quantum limit of coherent optical communications

Jingyun Fan, National Institute of Standards and Technology

Measurements based on the quantum properties of physical system have enabled many tasks which are not possible by any classical means. In this talk, I introduce two quantum receivers that discriminate nonorthogonal optical coherent states unconditionally surpassing the standard quantum limit, with mean photon numbers ranging from single photon level to many photons, thus bridging the gap between quantum information technology and state-of-the art coherent communications.

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.

Monday, March 10, 2014 2:30 pm - 3:30 pm EDT (GMT -04:00)

Solano: Quantum simulations as our quantum theatre

Enrique Solano, Universidad del País Vasco, Bilbao, Spain

I will introduce the field of quantum simulations from a wide
scientific perspective. Then, I will discuss the relevance of quantum
simulations for reproducing different aspects of quantum physics:
nonrelativistic and relativistic quantum dynamics, physical and unphysical
quantum operations, as well as strong and ultrastrong light-matter
interactions. Finally, I will give examples in the context of trapped-ion
and circuit QED technologies.

Monday, June 23, 2014 12:00 am - Friday, June 27, 2014 12:00 am EDT (GMT -04:00)

Algebraic Combinatorics: Spectral Graph Theory, Erdös-Ko-Rado Theorems and Quantum Information Theory

A conference to celebrate the work of Chris Godsil

It is surprising that the characteristic polynomial ofChris Godsil the adjacency matrix of a graph provides a useful window onto combinatorial properties of the graph itself, but this approach to graph theory has been a source of interesting and useful results for over 80 years.

Wednesday, April 9, 2014 3:00 pm - 4:00 pm EDT (GMT -04:00)

Traub: Algorithms and Complexity for Quantum Computing

Joseph F. Traub, Columbia University

We introduce the notion of strong quantum speedup. To compute this
speedup one must know the classical computational complexity. What is it about the problems of quantum physics and quantum chemistry that enable us to get lower bounds on the classical complexity?

Friday, January 17, 2014 12:00 pm - Monday, January 20, 2014 12:00 pm EST (GMT -05:00)

Quantum Innovators

The Quantum Innovators workshop will bring together the most promising young researchers in quantum physics and engineering for a three-day conference aimed at exploring the frontier of our field.