Department of Physics, Engineering Physics & Astronomy

Queen's University
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Department of Physics, Engineering Physics & Astronomy
Department of Physics, Engineering Physics & Astronomy

Good Vibrations: Building Quantum Technologies in the Vibronic States of Molecules & Solids

Benjamin Sussman
NRC Ottawa, Ottawa University

Thurs., March 27, 2014
10:30 AM @ Stirling Hall, 401


The unusual features of quantum mechanics are enabling the development of technologies not possible with classical physics. These devices utilize nonclassical phenomena in the states of atoms, ions, and solid-state media as the basis for many prototypes including, e.g., new photon sources, advanced communications, and high-sensitivity measurements. Here we investigate vibronic states in molecules and solids as distinct alternative substrates. We demonstrate a memory for light based on storing photons in the vibrations of hydrogen molecules and the optical phonons of diamond. The ultra wide bandwidth molecular memory can be used to store femtosecond pulses for many operational time bins before the states decohere. These system can also be used, via Raman interactions, to optically amplify quantum fluctuations up to macroscopic levels, visible to the naked eye. These fluctuations have found application in the generation of quantum keys, for secure communications.