Direct imaging of tunneling from a potential well
We experimentally map the wavefunction in the vicinity of a radial potential well. We photograph light intensity near the tunneling region as well as measure the spiraling phase structure via interference with a reference wave. This spiraling phase structure is required for conservation of angular momentum. The experimental image reveals the non-intuitive emission of light from a region in space that is empty of material and relatively far from the device.
Additional Information© 2009 Optical Society of America. Received 22 Jul 2009; revised 3 Sep 2009; accepted 10 Sep 2009; published 8 Oct 2009.
Published - Tomes2009p6204Opt_Express.pdf