Two-photon diffraction and quantum lithography.
We report a proof-of-principle experimental demonstration of quantum lithography. Utilizing the entangled nature of a two-photon state, the experimental results have beaten the classical diffraction limit by a factor of 2. This is a quantum mechanical two-photon phenomenon but not a violation of the uncertainty principle.
D'Angelo
M
M
Department of Physics, University of Maryland, Baltimore County, Baltimore, Maryland 21250, USA.
Chekhova
M V
MV
Shih
Y
Y