Author(s): Jibiao Wang, Hao Guo, and Qijin Chen
The pairing and superfluid phenomena in a two-component Fermi gas can be strongly affected by the population and mass imbalances. Here we present phase diagrams of an atomic Fermi-Fermi mixture as they undergo BCS?Bose-Einstein condensation (BEC) crossover using a pairing fluctuation theory. We focu…
[Phys. Rev. A 87, 041601] Published Thu Apr 11, 2013
Author(s): Xiao-Ming Lu, Zhe Sun, Xiaoguang Wang, Shunlong Luo, and C. H. Oh
It is well known that classical information can be cloned, but nonorthogonal quantum states cannot be cloned, and noncommuting quantum states cannot be broadcast. We conceive a scenario in which the object we want to broadcast is the statistical distinguishability, as quantified by quantum Fisher in…
[Phys. Rev. A 87, 050302] Published Thu May 16, 2013
Author(s): S. Möbius, M. Genkin, A. Eisfeld, S. Wüster, and J. M. Rost
In Rydberg dressed ultracold gases, ground-state atoms inherit properties of a weakly admixed Rydberg state, such as sensitivity to long-range interactions. We show that through hyperfine-state-dependent interactions, a pair of atom clouds can evolve into a spin and subsequently into a spatial mesos…
[Phys. Rev. A 87, 051602] Published Mon May 13, 2013
Author(s): Sang Jae Yun and Chang Hee Nam
We propose a quantum computer architecture that is robust against decoherence and scalable. As a qubit we adopt rotational states of a nonpolar ionic molecule trapped in an ion trap. It is revealed that the rotational-state qubits are much more immune to decoherence than the conventional electronic-…
[Phys. Rev. A 87, 040302] Published Thu Apr 04, 2013
Author(s): Hannes Hultgren, Mikael Eklund, Dag Hanstorp, and Igor Yu. Kiyan
We present a real-time observation of electron motion in the ground state of the carbon atom. A wave packet is created in the ground triplet state of the atom via photodetachment of its negative ion in a strong laser field. Its dynamics is probed using the selectivity of strong-field ionization to o…
[Phys. Rev. A 87, 031404] Published Fri Mar 29, 2013
