Continuous generation of delayed light

Abstract

We use a Raman four-wave mixing process to read-out light from atomic coherence which is continuously written. The light is continuously generated after an effective delay, allowing the atomic coherence to evolve during the process. Contrary to slow-light delay, which depends on the medium optical depth, here the generation delay is determined solely by the intensive properties of the system, approaching the atomic coherence lifetime at the weak driving limit. The generated light is background free. We experimentally probe these properties utilizing spatial diffusion as an 'internal clock' for the atomic evolution time.

References in corpus (10)

• Stationary pulses of light in an atomic medium
• Single Photon Transistor Mediated by Inter-State Rydberg Interaction
• Nonlinear quantum optics mediated by Rydberg interactions
• Optical $\pi$ Phase Shift Created with a Single-Photon Pulse
• Storing images in warm atomic vapor
• Deterministic single photons via conditional quantum evolution
• Stationary Light Pulses without Bragg Gratings
• Stationary Light Pulses in Cold Atomic Media
• Interfacing GHz-bandwidth heralded single photons with a room-temperature Raman quantum memory
• Theory of Thermal Motion in Electromagnetically Induced Transparency: Diffusion, Doppler, Dicke and Ramsey

Cited by in corpus (1)

• Structured beams invariant to coherent diffusion