A Knob for Changing Light Propagation from Subluminal to Superluminal

Abstract

We show how the application of a coupling field connecting the two lower metastable states of a lambda-system can produce a variety of new results on the propagation of a weak electromagnetic pulse. In principle the light propagation can be changed from subluminal to superluminal. The negative group index results from the regions of anomalous dispersion and gain in susceptibility.

6 pages,5 figures, typed in RevTeX, accepted in Phys. Rev. A

References in corpus (1)

• Transparent Anomalous Dispersion and Superluminal Light Pulse Propagation at a Negative Group Velocity

Cited by in corpus (32)

• Tunable fast and slow light in a hybrid optomechanical system
• Light propagation through closed-loop atomic media beyond the multiphoton resonance condition
• Tunable Electromagnetically Induced Transparency and Absorption with Dressed Superconducting Qubits
• Azimuthal modulation of electromagnetically induced transparency using structured light
• Phase induced transparency mediated structured beam generation in a closed-loop tripod configuration
• Narrow absorptive resonances in a four-level atomic system
• From Storage and Retrieval of Pulses to Adiabatons
• Sub and Super-Luminal Propagation of Intense Pulses in Media with Saturated and Reverse Absorption
• Electromagnetically induced absorption in a non-degenerate three-level ladder system
• Control of Fano resonances and slow light using Bose-Einstein condensates in a nanocavity
• Double-Electromagnetically Induced Transparency in a Y-type atomic system
• Absorption free superluminal light propagation in a three level pump-probe system
• Quantum coherence in a degenerate two-level atomic ensemble: for a transition $F_e=0\leftrightarrow F_g=1$
• Group velocity control in the ultraviolet domain via interacting dark-state resonances
• Effects of temperature and ground-state coherence decay on enhancement and amplification in a $\Delta$ atomic system
• Dark-Sates in Electromagnetically Induced Transparency Controlled by a Microwave Field
• Coherent medium as a polarization splitter of pulses
• Quantum Coherence Effects in Four-level Diamond Atomic System
• Efficient cloning and dragging of microwave pulse into optical frequency pulse in a Doppler-broadened atomic medium
• Storage and Retrieval of Light Pulses in a Fast-Light Medium via Active Raman Gain
• Superluminal light propagation via quantum interference in decay channels
• Gain-assisted superluminal light propagation via incoherent pump field
• Subluminal to superluminal propagation of an optical pulse in an f-deformed Bose- Einstein condensate
• Lossless anomalous dispersion and an inversionless gain doublet via dressed interacting ground states (DIGS)
• Probing, Quantifying and Freezing Coherence in a Thermal Ensemble of Atoms
• Control of light speed: From slow light to superluminal light
• Controlling subluminal to superluminal behavior of group velocity in an f-deformed Bose-Einstein condensate beyond the rotating wave approximation
• Phase control of squeezing in fluorescence radiation
• Quantum interferences from cross talk in $J=1/2\leftrightarrow J=1/2$ transitions
• Shape preserving atomic pulse amplifier
• Exact Analytical Solution of the Driven Qutrit in an Open Quantum System: V and $\Lambda$ Configurations
• Pulse propagation in a medium optically dressed by a phase-modulated field