Long-range interactions and entanglement of slow single-photon pulses
Loading...
Date
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Description
We show that very large nonlocal nonlinear interactions between pairs of colliding slow-light pulses can be realized in atomic vapors in the regime of electromagnetically induced transparency. These nonlinearities are mediated by strong, long-range dipole--dipole interactions between Rydberg states of the multi-level atoms in a ladder configuration. In contrast to previously studied schemes, this mechanism can yield a homogeneous conditional phase shift of pi even for weakly focused single-photon pulses, thereby allowing a deterministic realization of the photonic phase gate.
4 pages, 2 figures
4 pages, 2 figures