Even-order aberration cancellation in quantum interferometry.
We report the first experimental demonstration of even-order aberration cancellation in quantum interferometry. The effect is a spatial counterpart of the spectral group velocity dispersion cancellation, which is associated with spectral entanglement. It is manifested in temporal interferometry by virtue of the multiparameter spatial-spectral entanglement. Spatially entangled photons, generated by spontaneous parametric down-conversion, were subjected to spatial aberrations introduced by a deformable mirror that modulates the wave front. We show that only odd-order spatial aberrations affect the quality of quantum interference.
Bonato
Cristian
C
Department of Electrical & Computer Engineering, Boston University, Boston, Massachusetts 02215, USA.
Sergienko
Alexander V
AV
Saleh
Bahaa E A
BE
Bonora
Stefano
S
Villoresi
Paolo
P