Quantum Institute: Visitor Schedule

The Quantum Lunch is regularly held on Thursdays in the Theoretical Division Conference Room, TA-3, Building 123, Room 121.

The organizing committee includes Ryan O. Behunin (T-4 & CNLS), Malcolm Boshier (P-21), Adolfo del Campo (T-4 & CNLS), Michael Di Rosa (C-PCS), Ivar Martin (T-4), Changhyun Ryu (P-21), Rolando D. Somma (T-4), Christopher Ticknor (T-1), and Wojciech H. Zurek (T-4).

For more information, or to nominate a speaker, contact Adolfo del Campo.

To add your name to the Quantum Lunch email list, contact Ellie Vigil.

Monday, October 15, 2012
2:00 PM - 3:00 PM

Speaker: Edward Hinds

(Centre for Cold Matter, Imperial College London)

Technical Host: Malcolm Boshier

TOPIC: Towards cavity QED on a chip

Abstract
A single quantum emitter coupled to an optical cavity can be a versatile tool for quantum processing. It can be a source of single photons, a nonlinearity causing single photons to interact with each other, and an interconnect between flying qubits (the photons) and qubit memory (the emitter). The physics of these processes has been quite fully developed using individual macroscopic cavities coupled to atoms or ions. An important next step is to scale the systems to include many cavities and many individual quantum emitters. This motivates the development in my laboratory of microfabricated chips that offer a degree of scalability. I will describe [1] experiments on single atoms coupled to single microfabricated cavities, [2] new chips in which many cavities are interconnected to make a chain capable of computation, and [3] first steps towards the use of single dye molecules as the quantum emitters.

[1] J. Goldwin, M. Trupke, J. Kenner, A. Ratnapala and E. A. Hinds, "Cavity-enhanced atom detection with cooperative noise reduction", Nature Communications 2, 418 (2011).
[2] G. Lepert, M. Trupke, M. J. Harmann, M. B. Plenio, E. A. Hinds "Arrays of waveguide-coupled optical cavities that interact strongly with atoms" New Journal of Physics 13, 113002 (2011).
[3] J. Hwang and E. A. Hinds, "Dye molecules as single-photon sources and large optical nonlinearities on a chip" New J. Phys. 13 085009 (2011).