## Search

Now showing items 1-10 of 44

#### Fast light solitons in resonant media

(Physical Review A, 2007-04-05)

Using the structure of the Maxwell-Schrodinger equations in two-level systems in the transient domain, we derive both single-soliton and multisoliton (2n pi pulse) solutions associated with fast light in resonant media. ...

#### Extreme subwavelength atom localization via coherent population trapping

(Journal of Physics B: Atomic, Molecular and Optical Physics, 2006-09-06)

We demonstrate an atom localization scheme based on monitoring of the atomic coherences. We consider atomic transitions in a Lambda configuration where the control field is a standing-wave field. The probe field and the ...

#### Solitons in interacting Dicke models of coupled cavities with two-level systems

(2007-07-05)

We consider an array of coupled optical cavities, each containing a multi-atom ensemble. We show that the nonlinearity inherent in the cooperative dynamics of the atoms in each ensemble coupled to the respective cavity ...

#### Electromagnetic field induced modification of branching ratios for emission in structured vacuum

(New Journal of Physics, 2008-01-17)

We report a fundamental effect of the electromagnetic field induced modification of the branching ratios for emission into several final states. The modifications are especially significant if the vacuum into which the ...

#### Nonclassical correlation of polarisation entangled photons in a biexciton-exciton cascade

(Journal of Physics B: Atomic, Molecular and Optical Physics, 2008-11-10)

We develop a theoretical model to study the Intensity-Intensity correlation of polarisation entangled photons emitted in a biexciton-exciton cascade. We calculate the degree of correlation and show how polarisation ...

#### Nonclassicality and decoherence of photon-subtracted squeezed states

(Physical Review A, 2006-12-04)

We discuss nonclassical properties of single-photon subtracted squeezed vacuum states in terms of the sub-Poissonian statistics and the negativity of the Wigner function. We derive a compact expression for the Wigner ...

#### Measurement-induced spatial modulation of spontaneous decay and photon arrival times

(Physical Review A, 2006-12-20)

We report a way of manipulating the spontaneous emission process leading to a spatial modulation of spontaneous decay. The effect is observed in the case of coherently driven atoms separated by less than a transition ...

#### Towards Heisenberg limit in magnetometry with parametric down converted photons

(Physical Review A, 2006-11-16)

Recent theoretical and experimental papers have shown how one can achieve Heisenberg limited measurements by using entangled photons. Here we show how the photons in non-collinear down conversion process can be used for ...

#### Entanglement of two distant Bose-Einstein condensates by detection of Bragg-scattered photons

(Physical Review A, 2008-07-31)

We show that it is possible to generate entanglement between two distant Bose-Einstein condensates by detection of Hanbury Brown-Twiss type correlations in photons Bragg-scattered by the condensates. Upon coincident detection ...

#### Quantum optical spring

(Physical Review A, 2008-07-22)

We study the dynamics of the quantum optical spring, i.e., a spring whose spring constant undergoes discrete jumps depending on the quantum state of another system. We show the existence of revivals and fractional revivals ...