Monday, February 29, 2016 — 11:00 AM EST

Measuring Entanglement Entropy in a Many-body System

K. Rajibul Islam, MIT-Harvard Center for Ultracold Atoms

Entanglement, perhaps the most counter-intuitive feature of quantum mechanics, describes non-local correlations between quantum objects. In recent years, entanglement has emerged as a central concept in our understanding of quantum many-body physics. It allows us to characterize phases of quantum matter that cannot be distinguished by broken symmetries, such as topological states.

Tuesday, February 16, 2016 — 2:30 PM EST

Toward single atom qubits on a surface: Pump-probe spectroscopy and electrically-driven spin resonance

William Paul, IBM Research

Single Fe atoms placed on a thin MgO film have exceptional magnetic properties: Their spin relaxation lifetime can extend to many milliseconds, and their quantum state can be coherently manipulated by RF electric fields. In this talk, we will discuss a scanning tunneling microscopy (STM) investigation of the dynamics of spin-relaxation and the electric-field-driven spin resonance of individual Fe atoms on a MgO/Ag(001) surface.

Friday, February 12, 2016 — 11:00 AM EST

Progress toward a spin squeezed optical atomic clock beyond the standard quantum limit

Boris Braverman, Massachusetts Institute of Technology

State of the art optical lattice atomic clocks have reached a relative
inaccuracy level of order $10^{-18}$, making them the most stable time
references in existence.

Monday, February 8, 2016 — 4:00 PM EST

Catalysis of Stark-tuned Interactions between Ultracold Rydberg Atoms

Aye Lu Win, Old Dominion University

The strong long-range interaction between ultracold Rydberg atoms gives rise to a number of interesting phenomena that have been studied in recent years including resonant energy transfer collisions, many-body quantum simulations, quantum information processing, and ultracold plasmas. The dipole-dipole interaction between a pair of Rydberg atoms can result in a state-changing interaction if the energy defect for the process is small.

Monday, February 8, 2016 — 1:00 PM EST

Nanocontacts atom-by-atom with a friction emulator

Dorian Gangloff, Massachusetts Institute of Technology

Friction is the basic, ubiquitous mechanical interaction between two surfaces that results in resistance to motion and energy dissipation. To test long-standing atomistic models of friction processes at the nanoscale, we implemented a synthetic nanofriction interface using laser cooled ions subject to the periodic potential of an optical standing wave.

Thursday, October 15, 2015 — 10:00 AM EDT to Friday, March 11, 2016 — 4:00 PM EST
LIGHT Illuminated graphic including list of sponsors

Celebrating light and light-based technologies

LIGHT Illuminated celebrates the United Nation's International Year of Light. In this interactive exhibition at THEMUSEUM you can learn about the value and importance of light-based technologies by exploring a black-light room, playing with colour mixing stations, and trying to get through a laser maze.

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