Modulation of single-photon-level wave packets with two-component electromagnetically induced transparency

Abstract

Coherent manipulation of single-photon wave packets is essentially important for optical quantum communication and quantum information processing. In this paper, we realize controllable splitting and modulation of single-photon-level pulses by using a tripod-type atomic medium. The adoption of two control beams enable us to store one signal pulse into superposition of two distinct atomic collective excitations. By controlling the time delay between the two control pulses, we observe splitting of a stored wave packet into two temporally-distinct modes. By controlling the frequency detuning of the control beams, we observe both temporal and frequency-domain interference of the retrieval signal pulses, which provides a method for pulse modulation and multi-splitting of the signal photons.

5 pages, 4 figures

References in corpus (5)

• Coherent Optical Memory with High Storage Efficiency and Large Fractional Delay
• Magneto-optical rotation and cross-phase modulation via coherently driven tripod atoms
• Resonance beating of light stored using atomic spinor polaritons
• Experimental demonstration of spinor slow light
• Beam splitting and Hong-Ou-Mandel interference for stored light

Cited by in corpus (3)

• Journeys from Quantum Optics to Quantum Technology
• Coherent and Dynamic Beam Splitting based on Light Storage in Cold Atoms
• Propagation of coupled dark-state polaritons and storage of light in a tripod medium