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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.

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.

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.

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?

Thursday, April 17, 2014 12:00 pm - 1:00 pm EDT (GMT -04:00)

Kothari: Exponential improvement in precision for simulating sparse Hamiltonians

Robin Kothari

We provide a quantum algorithm for simulating the
dynamics of sparse Hamiltonians with complexity sublogarithmic in
the inverse error, an exponential improvement over previous methods.
Unlike previous approaches based on product formulas, the query
complexity is independent of the number of qubits acted on, and for
time-varying Hamiltonians, the gate complexity is logarithmic in the
norm of the derivative of the Hamiltonian. Our algorithm is based on
a significantly improved simulation of the continuous- and

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.