Events

Jeff Thompson, Harvard

Strong interactions between light and atoms at the single-quantum level are an important ingredient for quantum technologies, and for studies of complex many-particle quantum systems. In this talk, I will describe the development of a novel experimental platform that allows for trapping a single rubidium atom in the evanescent mode of a nano-fabricated optical cavity with sub-wavelength dimensions.

This event has been postponed and will be rescheduled for a later date.

Marzio Pozzuoli, Ryerson University

The RuggedCom Story – “A Tale of Canadian Technology Entrepreneurship & Crossing the Chasm”

In 2001 RuggedCom was a fledging startup. A decade later it was bought by Siemens for nearly half a billion dollars. Mr. Pozzuoli, its founder, will discuss its path to success and the role played in that success by the Canadian experience and the strategies outlined in Geoffrey Moore’s iconic book “Crossing the Chasm”.

Masayuki Okano, Kyoto University

Optical coherence tomography (OCT) has been a key technology in medicine and biology [1]; however, the axial resolution has been limited to the order of 10 μm due to the dispersion. As an alternative technique, quantum optical coherence tomography (QOCT) has been demonstrated in 19-μm resolution and shows dispersion-tolerance by virtue of the quantum correlation of entangled photon pairs [2].

Swati Singh, Harvard

The study of the interaction between quantum systems and their environment is central to the understanding of a broad range of problems. Important examples include the elusive quantum to classical transition, as illustrated most famously by the Schrödinger cat paradox, and non-equilibrium dynamics, as illustrated by the central spin problem. On the applied side, this understanding is an essential step towards quantum metrology, including the development of quantum noise limited detectors.

Jens Koch, Northwestern University

Quantum simulators such as systems of ultracold atoms in optical lattices enable one to explore exotic quantum phases of matter and systematically study quantum phase transitions between them. Recently demonstrated photonic systems based on circuit QED (Quantum ElectroDynamics) arrays feature exciting properties that set them apart from these conventional quantum simulators. In particular, a crucial difference is the intrinsic open-system character of photon-based systems.

Nathalie de Leon - Harvard University

Large-scale quantum networks will require efficient interfaces between photons and stationary quantum bits. Nitrogen vacancy (NV) centers in diamond are a promising candidate for quantum information processing because they are optically addressable, have spin degrees of freedom with long coherence times, and as solid-state entities, can be integrated into nanophotonic devices.

Niel de Beaudrap, IQC

Probability distributions and quantum states are examples of abstract
"distributions" over information such as bit-strings, in which more
than one bit-string may be a possible outcome. Probability
distributions are vectors of non-negative reals; quantum states are
vectors of complex-valued amplitudes, which may interfere
destructively. To investigate the importance of destructive
interference of "possibilities" independently of quantum mechanics, we

David McKay, University of Chicago

Superconducting Josephson‐junction (JJ) qubits are an emerging technology for quantum information processing. These qubits can be engineered with strong coupling to two or three‐dimensional microwave cavities which implements the cavity quantum electrodynamics (QED)  paradigm ‐ coherent coupling of a two‐level system to a harmonic oscillator. Cavity QED enables high fidelity qubit state readout, cavity‐mediated two‐qubit gates, and storing quantum information in noise‐insensitive photonic states.

Viv Kendon, Durham University

Practical quantum gate operations for quantum computing usually take
advantage of extra degrees of freedom in a physical qubit system or use
an extra, ancilla, system. For example, the collective vibrational
modes of ions in a trap are used for the Cirac-Zoller gate. I will
describe our search for the simplest forms of ancilla-controlled quantum
operations. Solving this theoretical puzzle can potentially lead us to
simpler designs for quantum computers that are easier to build. This

Masahiro Hotta, Tohoku University

Quantum Energy Teleportation (QET) is a protocol that allows one to teleport energy making use of pre-existing entanglement of the ground state of quantum many-body systems or quantum fields. I will review the latest results on QET and I will explain its implications on information thermodynamics, such as quantum Maxwell demons and Black Hole thermodynamics. I will also comment on current experimental prospects for QET via the quantum Hall effect.