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

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Cited by in corpus (8)

• Journeys from Quantum Optics to Quantum Technology
• Single-photon interference due to motion in an atomic collective excitation
• Giant Kerr nonlinearities and magneto-optical rotations in a Rydberg-atom gas via double electromagnetically induced transparency
• Coherent and Dynamic Beam Splitting based on Light Storage in Cold Atoms
• Creation of two-photon states via interactions between Rydberg atoms during light storage
• Propagation of coupled dark-state polaritons and storage of light in a tripod medium
• Controlled processing of signal stored in metamaterial with tripod structure
• Manipulation of quantum states in memory cell: controllable Mach-Zehnder interferometer