Entanglement between an autoionizing system and a neighboring atom

Lukš, A.; Peřina, Jan; Leoński, W.; Peřinová, V.

doi:10.1103/physreva.85.012321

Cited by 7 publications

(22 citation statements)

References 24 publications

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“…For a given M , the element d N (M ) of this distribution We note that the densities of the negativity have already been introduced for bipartite entangled states composed of a qubit and continuum of states [60,61] as well as two continua of states.…”

Section: Negativity Of the Twin Beammentioning

confidence: 99%

Comparative study of nonclassicality, entanglement, and dimensionality of multimode noisy twin beams

2015

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The nonclassicality, entanglement, and dimensionality of a noisy twin beam are determined using a characteristic function of the beam written in the Fock basis. One-to-one correspondence between the negativity quantifying entanglement and the nonclassicality depth is revealed. Twin beams, which are either entangled or nonclassical (independent of their entanglement), are observed only for the limited degrees of noise, which degrades their quantumness. The dimensionality of the twin beam quantified by the participation ratio is compared with the dimensionality of entanglement determined from the negativity. Partitioning of the degrees of freedom of the twin beam into those related to entanglement and to noise is suggested. Both single-mode and multimode twin beams are analyzed. Weak nonclassicality based on integrated-intensity quasidistributions of multimode twin beams is studied. The relation of the model to the experimental twin beams is discussed.

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Section: Negativity Of the Twin Beammentioning

confidence: 99%

Comparative study of nonclassicality, entanglement, and dimensionality of multimode noisy twin beams

2015

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“…Finally, also the dipole-dipole interaction between the discrete levels of both atoms is taken into play in (c). We note that detuning of energy levels of both atoms from the laser frequency does not qualitatively modify the behavior of the system (for more details, see [17] for semiclassical model). Also, we analyze the system at time t = 2 bellow.…”

Section: A Appropriate Parametrizationmentioning

confidence: 96%

“…In [17], the entanglement between an auto-ionization system and a neighbor atom is studied for a classical driving field. Besides the possibility to calculate a measure of entanglement for the two atomic systems, a somewhat * Electronic address: vlasta.perinova@upol.cz arbitrary, but systematic, filtering is adopted.…”

Section: Introductionmentioning

confidence: 99%

Quantum correlation and entanglement between an ionizing system and a neighboring atom interacting directly and via a quantized field

et al. 2014

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Quantum correlations between two neighbor atoms are studied. It is assumed that one atomic system comprises a single auto-ionizing level and the other atom does not contain any auto-ionizing level. The excitation of both atoms is achieved by the interaction with the same mode of the quantized field. It is shown that the long-time behavior of two atoms exhibits quantum correlations even when the atoms do not interact directly. This can be shown using the optical excitation of the neighbor atom. Also a measure of entanglement of two atoms can be applied after reduction of the continuum to two levels.

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“…AI models have also been applied in the context of electromagnetic-wave propagation in atomic media [36][37][38], for the description of interactions in a group of two [39][40][41][42][43][44] or three [45] atomic systems. Even quantum entanglement phenomena have been discussed in these systems [46].…”

Section: Introductionmentioning

confidence: 99%

Electromagnetically induced transparency for a double Fano-profile system

et al. 2014

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Abstract.A Λ-like model of atomic levels involving two auto-ionizing states is considered. The levels are irradiated by two external electromagnetic fields, a strong driving and a weak probing ones. The analytical formula for medium susceptibility shows an additional electromagnetically induced transparency window caused by the second auto-ionizing level. Characteristics of both transparency windows are analyzed depending on parameters of auto-ionizing levels and the external driving field. Manipulation of these characteristics seems to be very effective because of their large sensitivity with respect to the parameters involved in the problem. This manipulation becomes even more feasible when considered model is implemented in so-called laser-induced continuum structure.

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Entanglement between an autoionizing system and a neighboring atom

Cited by 7 publications

References 24 publications

Comparative study of nonclassicality, entanglement, and dimensionality of multimode noisy twin beams

Comparative study of nonclassicality, entanglement, and dimensionality of multimode noisy twin beams

Quantum correlation and entanglement between an ionizing system and a neighboring atom interacting directly and via a quantized field

Electromagnetically induced transparency for a double Fano-profile system

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