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- Institute for Nuclear Research and Nuclear EnergyBG104 papers
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4 papers · 2 filters
Counterintuitive transitions between crossing energy levels
A. A. Rangelov, J. Piilo, N. V. Vitanov
We calculate analytically the probabilities for intuitive and counterintuitive transitions in a three-state system, in which two parallel energies are crossed by a third, tilted en…
Extension of the Morris-Shore transformation to multilevel ladders
A. A. Rangelov, N. V. Vitanov, B. W. Shore
We describe situations in which chains of N degenerate quantum energy levels, coupled by time-dependent external fields, can be replaced by independent sets of chains of length N,…
Stimulated Raman adiabatic passage into continuum
A. A. Rangelov, N. V. Vitanov, E. Arimondo
We propose a technique which produces nearly complete ionization of the population of a discrete state coupled to a continuum by a two-photon transition via a lossy intermediate st…
Fermion Coherence Hamiltonians
O. Cherbal, M. Drir, M. Maamache +1
We have established that the most general form of Hamiltonian that preserves fermionic coherent states stable in time, is that of the nonstationary free fermionic oscillator. This…