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Now showing items 141-150 of 170
Single atom as a macroscopic entanglement source
(American Physical Society, 2006)
We discuss the generation of a macroscopic entangled state in a single atom cavity-QED system. The three-level atom in a cascade configuration interacts dispersively with two classical coherent fields inside a doubly ...
Charge-Transfer from Molecular-Hydrogen to Stored O-2+ and O-3+ Ions
(American Physical Society, 1989)
Direct Observation of Hyperfine Quenching of the (2)3p0 Level in Helium-Like Nickel
(American Physical Society, 1991)
We report a clear demonstration of the effect of hyperfine quenching of a forbidden transition by direct comparison of the lifetimes of the 2 3P0 level in the heliumlike isotopes Ni-61(26+) and Ni-58(26+). We find the ...
Gaussian-state entanglement in a quantum beat laser
(American Physical Society, 2011)
Recently quantum beat lasers have been considered as a source of entangled radiation [S. Qamar, F. Ghafoor, M. Hillery, and M. S. Zubairy, Phys. Rev. A 77, 062308 (2008)]. We investigate and quantify the entanglement of ...
Electron-Transfer from H-2 and Ar to Stored Multiply Charged Argon Ions Produced by Synchrotron Radiation
(American Physical Society, 1992)
The rate coefficients for electron transfer from Ar and H-2 to Ar(q+) ions (3 less-than-or-equal-to q less-than-or-equal-to 6) have been measured using an ion-storage technique in a Penning ion trap. The ions were produced ...
Measurement of a magnetic-dipole transition probability in Xe32+ using an electron-beam ion trap
(American Physical Society, 1997)
The transition probability for the 3d(4) D-5(2) <-- D-5(3) magnetic-dipole transition in Ti-like Xe (Xe32+) has been measured using an electron-beam ion trap. The unusually weak dependence of the transition energy on nuclear ...
K-Shell-Hole Production, Multiple-Hole Production, Charge-Transfer, and Antisymmetry
(American Physical Society, 1980)
Quenching Collisions of Low-Energy Metastable Multiply-Charged Argon Ions
(American Physical Society, 1994)
Quenching rates have been measured for selected metastable levels of Ar(q+) ions (q = 2, 3, 9, and 10) stored in a Kingdon ion trap, with mean energies of 262q eV and 181q eV. Effective quenching cross sections derived ...
Collinear Laser-Beam Ion-Beam Measurement of the Mean Lifetime of the Ar Ii 4p'2f-Degrees-7/2 Level
(American Physical Society, 1993)
The mean lifetime tau of the 4p'F-2(7/2)-degrees level of Ar II has been measured using a variant of the collinear laser-beam-fast-ion-beam spectroscopy technique. Our variant requires no mechanical motion or laser frequency ...
Polarization and Pressure-Dependence of 2p-1s Transitions in He-Like and Li-Like Neon Recoil Ions
(American Physical Society, 1987)