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Title: Quantum states of ultracold electronically excited atoms in a magnetic quadrupole trap

Abstract

In this work we present an investigation on the quantum dynamics of ultracold electronically excited atoms exposed to an external magnetic quadrupole field. We present a general Hamiltonian which describes the quantum dynamics of an atom in an arbitrary linear magnetic field. This makes our approach applicable to a wide range of atoms and magnetic field configurations. The system is solved by incorporating an adiabatic separation of the electronic and center-of-mass dynamics. We provide the adiabatic energy surfaces and discuss under which conditions trapped center-of-mass states can be achieved. We present energies and wave functions of the corresponding quantum states. By analyzing the properties of the combined center-of-mass and electronic quantum states we demonstrate that the extension of the electronic wave function can exceed that of the center-of-mass motion. Therefore such atoms cannot be considered as being pointlike. A discussion of electromagnetic transitions is also provided.

Authors:
 [1];  [1];  [2]
  1. Physikalisches Institut, Universitaet Heidelberg, Philosophenweg 12, 69120 Heidelberg (Germany)
  2. (Germany)
Publication Date:
OSTI Identifier:
20786539
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. A; Journal Volume: 72; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevA.72.053410; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; ATOMS; CENTER-OF-MASS SYSTEM; ENERGY-LEVEL TRANSITIONS; EXCITED STATES; HAMILTONIANS; MAGNETIC FIELD CONFIGURATIONS; MAGNETIC FIELDS; QUADRUPOLES; RADIATION PRESSURE; SURFACES; TRAPPING; TRAPS; WAVE FUNCTIONS

Citation Formats

Lesanovsky, Igor, Schmelcher, Peter, and Theoretische Chemie, Institut fuer Physikalische Chemie, Universitaet Heidelberg, INF 229, 69120 Heidelberg. Quantum states of ultracold electronically excited atoms in a magnetic quadrupole trap. United States: N. p., 2005. Web. doi:10.1103/PHYSREVA.72.0.
Lesanovsky, Igor, Schmelcher, Peter, & Theoretische Chemie, Institut fuer Physikalische Chemie, Universitaet Heidelberg, INF 229, 69120 Heidelberg. Quantum states of ultracold electronically excited atoms in a magnetic quadrupole trap. United States. doi:10.1103/PHYSREVA.72.0.
Lesanovsky, Igor, Schmelcher, Peter, and Theoretische Chemie, Institut fuer Physikalische Chemie, Universitaet Heidelberg, INF 229, 69120 Heidelberg. Tue . "Quantum states of ultracold electronically excited atoms in a magnetic quadrupole trap". United States. doi:10.1103/PHYSREVA.72.0.
@article{osti_20786539,
title = {Quantum states of ultracold electronically excited atoms in a magnetic quadrupole trap},
author = {Lesanovsky, Igor and Schmelcher, Peter and Theoretische Chemie, Institut fuer Physikalische Chemie, Universitaet Heidelberg, INF 229, 69120 Heidelberg},
abstractNote = {In this work we present an investigation on the quantum dynamics of ultracold electronically excited atoms exposed to an external magnetic quadrupole field. We present a general Hamiltonian which describes the quantum dynamics of an atom in an arbitrary linear magnetic field. This makes our approach applicable to a wide range of atoms and magnetic field configurations. The system is solved by incorporating an adiabatic separation of the electronic and center-of-mass dynamics. We provide the adiabatic energy surfaces and discuss under which conditions trapped center-of-mass states can be achieved. We present energies and wave functions of the corresponding quantum states. By analyzing the properties of the combined center-of-mass and electronic quantum states we demonstrate that the extension of the electronic wave function can exceed that of the center-of-mass motion. Therefore such atoms cannot be considered as being pointlike. A discussion of electromagnetic transitions is also provided.},
doi = {10.1103/PHYSREVA.72.0},
journal = {Physical Review. A},
number = 5,
volume = 72,
place = {United States},
year = {Tue Nov 15 00:00:00 EST 2005},
month = {Tue Nov 15 00:00:00 EST 2005}
}