Wave front reversal of single photons

V. I. Bespalov, Alexander A. Betin, A. I. Dyatlov +4 more

V. I. Bespalov, Alexander A. Betin, A. I. Dyatlov +4 more

N. B. Baranova, Boris Ya Zel'dovich

Alain Aspect, Philippe Grangier

N. S. Shiren

It is shown that backward-wave photon echoes may be generated and the echo wave fronts are time reversed with respect to the first pulse of either a two- or three-pulse input sequence. Some comparisons are made with the four-wave degenerate parametric technique for generating time-reversed wave fronts.

Mahmoud Gaafar, Jannik Holtorf, Manfred Eich +1 more

We discuss how dynamic light stopping and pulse time reversal can be implemented in dispersive waveguides via indirect photonic transitions induced by moving refractive index fronts. The previous concepts of light stopping/time reversal either require complex local variation of the device’s refractive index or rely on the strict phase matching condition, which imposes limitations on the amount of manipulated information. Until now, only single pulses or continuous waves were manipulated experimentally. Our scheme is not limited by a strict phase matching condition and does not require local index variations, thus it can manipulate broadband signals in a single step process. Here, we present several numerically integrated results for pulse time reversal and stopping/storage via indirect front-induced transitions. The presented results are experimentally feasible using existing photonic waveguide technologies.