Seminar

Daniel Terno, Macquarie University

The debate on wave vs particle nature of light goes back to the days of Huygens and Newton. When used to model properties of quantum system these concepts lose their objective meaning and simply become the two aspects of wave-particle duality. Duality played a central role in Bohr—Einstein debates and prompted Bohr to formulate the complementarity principle. Complementarity leaves open the possibility that by adapting to the specific experimental sit-up a quantum system always behaves definitely either as a particle or as a wave.

Tim J. Bartley, National Institute of Standards and Technology, Boulder

Fundamental to quantum optics is the study of the distribution of photons in modes of an electromagnetic field. Until now, direct photon number measurements on nonclassical states occupying a single mode have been limited to the few-photon regime (typically no more than 5). I will present results from direct measurements of nonclassical states containing up to 50 (fifty) photons, at telecom wavelengths and with total raw efficiencies well above 60%.

Ben Baragiola, University of New Mexico

Traveling wave packets of light prepared with a definite number of photons, known as multimode Fock states, are well-suited for the role of "flying qubits" to relay information in a quantum computing device. In both the optical and microwave domain, propagating single-photon fields are routinely produced and manipulated, with ongoing progress toward higher photon numbers.

Michele Piscitelli, Royal Holloway University

The focus of this talk will be a general introduction to Nuclear Magnetic Resonance (NMR) detection schemes that are based on the use of Superconducting Quantum Interference Devices (SQUIDs) as highly sensitive magnetometers. I will begin by providing an overview of the relevant concepts and principles behind SQUID-detected NMR. In the main part of my talk I will be presenting our experimental results and achievements in the field of ultralow field SQUID NMR spectroscopy and Magnetic Resonance Imaging (MRI).

Jerry Chow, IBM T.J. Watson Research Center, USA

Fault tolerant quantum computing is possible by employing quantum error correction techniques. In this talk I will describe an implementation of a true quantum code using 4 lithographically defined superconducting qubits in a square lattice capable of measuring both types of possible quantum errors occurring on a single qubit. The experiment requires highly coherent qubits, high quality quantum operations implementing the detecting circuit, and a high quality independent qubit measurement set-up.

Viatcheslav Dobrovitski,

Na Young Kim, Stanford University

We in modern society are beneficiaries of advanced electronics, photonics and the combination of two. As an effort to develop new platforms of electronics, photonics and optoelectronics harnessing quantum nature, I have studied transport properties of carbon nanotubes, where long-range interaction plays a significant role. In photonics domain, I have been studying exciton-polaritons in a quantum-well-microcavity structure, where dynamical macroscopic condensation emerge via stimulated scattering process arising from exchange interactions.

Konstantinos Lagoudakis,  Stanford University

Light matter interactions lie in the heart of several phenomena of fundamental and applied interest. Both condensation of exciton polaritons in semiconductor microcavities as well as quantum information processing with charged quantum dots in micro-resonators rely on strong light matter interactions.

Matthieu Nannini, McGill University

While IBM Zurich's millipede project of data storage did not
have the success anticipated it would, a new technology for nano
lithography was born. Since 2009, IBM Zurich has been refining their

Laura Mančhinska, CQT, Singapore

Quantum thermodynamics is a research field that aims at fleshing out the ultimate limits of thermodynamic processes in the quantum regime. A complete picture of quantum thermodynamics allows for catalysts, i.e., systems facilitating state transformations while remaining essentially intact in their state, very much reminding of catalysts in chemical reactions. In this work, we present a comprehensive analysis of the power and limitation of such thermal catalysis.