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Physics

Atomic / Molecular / Quantum

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Displaying 751 - 775 of 1133

Line shapes, positions and intensities of water transitions near 1.28 microns

November 7, 2014
Author(s)
Vincent T. Sironneau, Joseph T. Hodges
We present measurements of approximately 70 isolated, self-broadened, water vapor lines which are assigned to the (1,0,1)(0,0,0), (0,0,2)(0,0,0), (1,2,0)(0,0,0), and (2,0,0)(0,0,0) vibrational bands and which occur in the transparency window region

Spin-orbit-coupled topological Fulde-Ferrell states of fermions in a harmonic trap

November 7, 2014
Author(s)
Lei Jiang, Eite Tiesinga, Xie-Ji Liu, Hui Hu, Han Pu
Motivated by recent experimental breakthroughs in generating spin-orbit coupling in ultracold Fermi gases using Raman laser beams, we present a systematic study of spin-orbit-coupled Fermi gases confined in a quasi-one-dimensional trap in the presence of

Scattering resonances and bound states for strongly interacting Rydberg polaritons

November 3, 2014
Author(s)
Przemek Bienias, Soonwon Choi, Ofer Firstenberg, Mohammad F. Maghrebi, Mikhail Lukin, Alexey Gorshkov, Hans Peter Buchler
We provide a rigorous framework describing a low-density gas of slow-light polaritons propagating in one dimension under the conditions of electromagnetically induced transparency and interacting via strong Rydberg-Rydberg interactions. Specifically, we

Which resonances in small metallic nanoparticles are plasmonic?

November 3, 2014
Author(s)
Emily Townsend, Garnett W. Bryant
We use time-dependent density functional theory to examine the character of various resonances corresponding to peaks in the optical response of small metallic nanoparticles. Each resonance has both "sloshing" and "inversion" character. The sloshing mode

Extended and Revised Analysis of Singly Ionized Tin: Sn II

October 28, 2014
Author(s)
K. Haris, Alexander Kramida, A. Tauheed
The electronic structure of singly ionized tin (Sn II) is partly a one-electron and partly a three-electron system with ground configuration 5s25p. The excited configurations are of the type 5s2nℓ in the one-electron part, and 5s5p2, 5p3 and 5s5pnℓ (nℓ =

Kitaev chains with long-range interactions

October 9, 2014
Author(s)
Davide Vodola, Luca Lepori, Elisa Ercolessi, Alexey Gorshkov, Guido Pupillo
We propose and analyze a generalization of the Kitaev chain for fermions with long-range p-wave pairing, which decays with distance as a power-law with exponent $\alpha$. Using the integrability of the model, we demonstrate the existence of two types of

Optimizing Passive Quantum Clocks

October 8, 2014
Author(s)
Michael J. Mullan, Emanuel Knill
We describe protocols for passive atomic clocks based onquantum interrogation of the atoms. Unlike previous techniques, our protocols are adaptive and take advantage of prior information about the clock's state. To reduce deviations from an ideal clock

Collapse and revivals for systems of short-range phase coherence

October 7, 2014
Author(s)
Khan W. Mahmud, Lei Jiang, Philip R. Johnson, Eite Tiesinga
We predict the existence of novel collapse and revival oscillations that are a distinctive signature of the short-range off-diagonal coherence associated with particle-hole pairs in Mott insulator states. Starting with an atomic Mott state in a one

Interferometric Measurement of the Current-Phase Relationship of a Superfluid Weak Link

September 22, 2014
Author(s)
Stephen Eckel, Fred Jendrzejewski, Avinash Kumar, Christopher J. Lobb, Gretchen K. Campbell
Weak connections between superconductors or superfluids differ from classical links due to quantum coherence, which allows flow without resistance. Transport properties through such weak links can be described with a single function, the current-phase

Dynamic, Ultra-Slow Optical-Matter Wave Analog of an Event Horizon

August 28, 2014
Author(s)
C. J. Zhu, Lu Deng, Edward W. Hagley, Mo-Lin Ge
We investigate theoretically the effects of a dynamically increasing medium index on optical- wave propagation in a rubidium condensate. A long pulsed pump laser coupling a D2 line transition produces a rapidly growing internally generated field. This
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