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5 papers · 1 filter
A Systematic Formulation of Slow Polaritons in Atomic Gases
G. Juzeliunas, H. J. Carmichael
We formulate a theory of slow polaritons in atomic gases and apply it to the slowing down, storing, and redirecting of laser pulses in an EIT medium. The normal modes of the couple…
Real measurements and Quantum Zeno effect
Julius Ruseckas, B. Kaulakys
In 1977, Mishra and Sudarshan showed that an unstable particle would never be found decayed while it was continuously observed. They called this effect the quantum Zeno effect (or…
Phase Diagram of the Spin-Orbital model on the Square Lattice
E. Zasinas, O. P. Sushkov, J. Oitmaa
We study the phase diagram of the spin-orbital model in both the weak and strong limits of the quartic spin-orbital exchange interaction. This allows us to study quantum phase tran…
Spatial and Temporal Noise Spectra of Spatially Extended Systems with Order-Disorder Phase Transitions
Kestutis Staliunas
The noise power spectra of spatially extended dynamical systems are investigated, using as a model the Complex Ginzburg-Landau equation with a stochastic term. Analytical and numer…
Possibility of the tunneling time determination
Julius Ruseckas
We show that it is impossible to determine the time a tunneling particle spends under the barrier. However, it is possible to determine the asymptotic time, i.e., the time the part…