Search
Now showing items 111-120 of 147
Entanglement criteria and nonlocality for multimode continuous-variable systems RID B-8901-2008
(American Physical Society, 2009)
We demonstrate how to efficiently derive a broad class of inequalities for entanglement detection in multimode continuous variable systems. The separability conditions are established from partial transposition (PT) in ...
Coherence-induced entanglement
(American Physical Society, 2005)
We show how atomic coherence can lead to entanglement between two thermal fields at a temperature T. We first show that the passage of a three-level atom in V configuration without coherence cannot create entanglement. ...
Reply to "Comment on 'Quantum search protocol for an atomic array' "
(American Physical Society, 2002)
Our quantum search protocol indicates that entanglement is not required for rootN speedup. We also reemphasize the quantum error correction mechanism in our scheme.
Vacuum squeezing in atomic media via self-rotation RID A-1272-2007 RID B-9041-2008
(American Physical Society, 2002)
When linearly polarized light propagates through a medium in which elliptically polarized light would undergo self-rotation, squeezed vacuum can appear in the orthogonal polarization. A simple relationship between self-rotation ...
Electromagnetically induced transparency controlled by a microwave field
(American Physical Society, 2009)
We have experimentally studied the propagation of two optical fields in a dense rubidium (Rb) gas in the case when an additional microwave field is coupled to the hyperfine levels of Rb atoms. The Rb energy levels form a ...
Chirping a two-photon transition in a multistate ladder RID C-2713-2008 RID A-7617-2010
(American Physical Society, 2007)
We consider a two-photon transition in a specific ladder system driven by a chirped laser pulse. In the weak field limit, we find that the excited state probability amplitude arises due to interference of multiple quantum ...
Optical beam steering based on electromagnetically induced transparency
(American Physical Society, 2006)
We propose a scheme that provides all-optically-controlled steering of light beam. The system is based on steep dispersion of a coherently driven medium. Using the eikonal equation, we study the steering angle, the spread ...
Glucose concentration measured by the hybrid coherent anti-Stokes Raman-scattering technique
(American Physical Society, 2010)
We investigate the possibility of using a hybrid coherent anti-Stokes Raman scattering technique for noninvasive monitoring of blood glucose levels. Our technique combines instantaneous coherent excitation of several ...
Control of the Lamb shift by a driving field
(American Physical Society, 2010)
A unitary transformation approach is used to study the energy level shift of the atom coupled to both a vacuum electromagnetic field and a driving laser. The Lamb shift of the energy levels is shown to depend on the Rabi ...
Optically controlled delays for broadband pulses
(American Physical Society, 2005)
We propose a scheme that provides large controllable delays for broadband optical pulses. The system is based on the steep dispersion of a coherently driven medium, in which the narrow electromagnetically induced transparency ...