Phase modulation induced by cooperative effects in electromagnetically induced transparency

Abstract

We analyze the influence of dipole-dipole interactions in an electromagnetically induced transparency setup at high density. We show both analytically and numerically that the polarization contribution to the local field strongly modulates the phase of a weak pulse. We give an intuitive explanation for this local field induced phase modulation and show that it distinctively differs from the nonlinear self-phase modulation a strong pulse experiences in a Kerr medium.

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Cited by in corpus (5)

• Electromagnetically Induced Transparency in strongly interacting Rydberg Gases
• Negative refraction with tunable absorption in an active dense gas of atoms
• Noise-induced topological transformations of vortex solitons in optical fibers filled with a cold atomic gas
• Controllable linear $\pi$-phase modulation in a thermal atom vapor without diffraction or absorption
• Diffractionless image propagation and frequency conversion via four-wave mixing exploiting the thermal motion of atoms