14.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR1.6k papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR1.4k papers
- Heidelberg UniversityDE1.3k papers
- Max Planck SocietyDE1.1k papers
- University of ZurichCH1.1k papers
- European Organization for Nuclear ResearchCH1k papers
- Laboratoire de Physique Nucléaire et de Hautes ÉnergiesFR990 papers
- Institute of Nuclear Physics, Polish Academy of SciencesPL973 papers
- University of Maryland, College ParkUS940 papers
- Rutherford Appleton LaboratoryGB939 papers
- Institute for Nuclear ResearchRU922 papers
- Istituto Nazionale di Fisica Nucleare, Sezione di BolognaIT912 papers
10 papers · 2 filters
Enhanced lifetime of positronium atoms via collective radiative effects
Ni Cui, Mihai Macovei, Karen Z. Hatsagortsyan +1
A method is proposed to manipulate the annihilation dynamics of a dense gas of positronium atoms employing superradiance and subradiance regimes of the cooperative spontaneous emis…
Underlining some limitations of the statistical formalism in quantum mechanics
Filippo Fratini, Armen G. Hayrapetyan
We show that two chosen ensembles of spin states, which are differently prepared but are described by the same density matrix in quantum mechanics, do not fully share the same meas…
Formation of supermodes in atom-microcavity chains
Sandra Isabelle Schmid, Joerg Evers
A chain of atom-microcavity systems coupled by a common fiber is considered. We analyze the formation of supermodes and focus on the dependence of this effect on the chain geometry…
Photon scattering from strongly driven atomic ensembles
Lu-ling Jin, Joerg Evers, Mihai Macovei
The second order correlation function for light emitted from a strongly and near-resonantly driven dilute cloud of atoms is discussed. Because of the strong driving, the fluorescen…
Microcavities coupled to multilevel atoms
S. I. Schmid, J. Evers
A three-level atom in the -configuration coupled to a microcavity is studied. The two transitions of the atom are assumed couple to different counterpropagating mode pairs in th…
Non-diffracting Optical Beams in a Three-level Raman System
T. N. Dey, J. Evers
Diffractionless propagation of optical beams through atomic vapors is investigated. The atoms in the vapor are operated in a three-level Raman configuration. A suitably chosen cont…
PT symmetry and spontaneous symmetry breaking in a microwave billiard
S. Bittner, B. Dietz, U. Guenther +4
We demonstrate the presence of parity-time (PT) symmetry for the non-Hermitian two-state Hamiltonian of a dissipative microwave billiard in the vicinity of an exceptional point (EP…
Bragg scattering of light in vacuum structured by strong periodic fields
Gagik Yu. Kryuchkyan, Karen Z. Hatsagortsyan
Elastic scattering of laser radiation due to vacuum polarization by spatially modulated strong electromagnetic fields is considered. The Bragg interference arising at a specific im…
Pathway interference in a loop array of three coupled microresonators
Sandra Isabelle Schmid, Keyu Xia, Jörg Evers
A system of three coupled toroidal microresonators arranged in a loop configuration is studied. This setup allows light entering the resonator setup from a tapered fiber to evolve…
Laser assisted decay of quasistationary states
H. M. Castañeda Cortés, S. V. Popruzhenko, D. Bauer +1
The effects of intense electromagnetic fields on the decay of quasistationary states are investigated theoretically. We focus on the parameter regime of strong laser fields and non…