aqora

Superluminal Light Pulse Propagation at a Negative Group Velocity

L. J. Wang, Arthur Dogariu, A. Kuzmich

Springer eBooksJan 1, 20031 citation

Sub-to super-luminal group velocity in atomic medium with squeezed baths

Kariman I. Osman, Saad S. M. Hassan, Amitabh Joshi

Two conditions are formulated that shows a Λ-type three-level atomic system in squeezed baths along with quantum interference between decay channels becomes dispersionless or absorptionless. Relative phase of external fields controls the group velocity.

The Rochester Conferences on Coherence and Quantum Optics and the Quantum Information and Measurement meetingJan 1, 20070 citations

Absorption-Free Sub- and Super-Luminal Light Propagation via Quantum Interference

Jianchun Wu, Zhengdong Liu, Jun Zheng

We investigate the dispersive and absorptive properties of an N-type four-level atomic system in three coherent fields, and consider the susceptibility mathematically. It is shown that the group velocity of the probe field exhibits sub- and super-luminal under some conditions, meanwhile the absorption coefficient keeps zero during the occurrence and transition process of sub- and super-luminal pulses.

Chinese Physics LettersOct 1, 20120 citations

QUANTUM FLUCTUATIONS AND SIGNAL VELOCITY IN SUPERLUMINAL LIGHT PULSE PROPAGATION

L. J. WANG

Time and Matter International Colloquium on the Science of TimeFeb 1, 20061 citation

Squeezing-enhanced lateral light drag in a driven qubit model

Hazrat Ali, S. S. Hassan, Rania A. Alharbey +2 more

The European Physical Journal PlusJul 11, 20251 citation

Transient Dynamics of Light Propagation in A-Atom EIT Medium

Li, Yong, Liu +1 more

We investigate the transient phenomenon or property of the propagationof an optical probe field in a medium consisting of many A-type three-level atoms coupled to this probe field and a classical driven field. We observe a hidden symmetry and obtain an exact solution for this light propagation problem by means of the spectral generating method. This solution enlightens us to propose a practical protocol implementing the quantum memory robust for quantum decoherence in a crystal. As a transient dynamic process this solution also manifests an exotic result that a wave-packet of light will split into three packets propagating at different group velocities. It is argued that super-luminal group velocity and sub-luminal group velocity can be observed simultaneously in the same system. This interesting phenomenon is expected to be demonstrated experimentally.We investigate the transient phenomenon or property of the propagationof an optical probe field in a medium consisting of many A-type three-level atoms coupled to this probe field and a classical driven field. We observe a hidden symmetry and obtain an exact solution for this light propagation problem by means of the spectral generating method. This solution enlightens us to propose a practical protocol implementing the quantum memory robust for quantum decoherence in a crystal. As a transient dynamic process this solution also manifests an exotic result that a wave-packet of light will split into three packets propagating at different group velocities. It is argued that super-luminal group velocity and sub-luminal group velocity can be observed simultaneously in the same system. This interesting phenomenon is expected to be demonstrated experimentally.

理论物理通讯：英文版Jan 1, 20050 citations

Doppler broadening and squeezing-induced sub- and super-luminal group velocity in a driven qubit model

Related papers

Doppler broadening and squeezing-induced sub- and super-luminal group velocity in a driven qubit model

Related papers