"Optics with a single atom," by Dr. Erik Streed (Griffith University, Australia)

Date: 
Friday, June 21, 2013 - 11:00am to 12:00pm
Series: 
AMO Seminars

AMO Seminar

Friday, June 21, 2013
11:00AM
Physics & Astronomy Building (PAB) Room 4-330

Guest Speaker: Dr. Erik Streed (Centre for Quantum Dynamics, Griffith University, Australia)

Talk Title: "Optics with a single atom"

Abstract:

What is the smallest object that can function as an optical component? We have shown the first absorption imaging by a single isolated atom (174Yb+) and subsequently used our technique to induce and measure a large optical phase shift of 1.3(0.1) radians in light scattered by the atom. The observed image contrast of 3.1(3)% achieved the maximum allowed by atomic theory for our setup. Imaging resolution on the order of the 370 nm illumination wavelength allowed us to perform spatial interferometry between the scattered light and unscattered illumination light, enabling us to isolate the phase shift in the scattered component.  Our results point to new opportunities in microscopy, quantum information, and nanophotonics.