scholarly journals Quasiadiabatic dynamics of ultracold bosonic atoms in a one-dimensional optical superlattice

2015 ◽  
Vol 92 (3) ◽  
Author(s):  
A. Dhar ◽  
D. Rossini ◽  
B. P. Das
Keyword(s):  
One Dimensional ◽  
Optical Superlattice ◽  
Ultracold Bosonic Atoms ◽  
Bosonic Atoms

scholarly journals A Thouless quantum pump with ultracold bosonic atoms in an optical superlattice

2015 ◽  
Vol 12 (4) ◽  
pp. 350-354 ◽  
Author(s):  
M. Lohse ◽  
C. Schweizer ◽  
O. Zilberberg ◽  
M. Aidelsburger ◽  
I. Bloch
Keyword(s):  
Optical Superlattice ◽  
Ultracold Bosonic Atoms ◽  
Bosonic Atoms

scholarly journals QUANTUM PHASES OF ULTRACOLD BOSONIC ATOMS IN A TWO-DIMENSIONAL OPTICAL SUPERLATTICE

2009 ◽  
Vol 23 (01) ◽  
pp. 25-33 ◽  
Author(s):  
JING-MIN HOU
Keyword(s):  
Hubbard Model ◽  
Density Wave ◽  
Noise Correlation ◽  
Two Dimensional ◽  
Quantum Phases ◽  
First Order ◽  
Optical Superlattice ◽  
Correlation Techniques ◽  
Ultracold Bosonic Atoms ◽  
Bosonic Atoms

We study quantum phases of ultracold bosonic atoms in a two-dimensional optical superlattice. The extended Bose–Hubbard model derived from the system of ultracold bosonic atoms in an optical superlattice is solved numerically with the Gutzwiller approach. We find that the modulated superfluid (MS), Mott-insulator (MI) and density-wave (DW) phases appear in some regimes of parameters. The experimental detection of the first-order correlations and the second-order correlations of different quantum phases with time-of-flight and noise-correlation techniques is proposed.

Entanglement for excited states of ultracold bosonic atoms in one-dimensional harmonic traps with contact interaction

2015 ◽  
Vol 29 (30) ◽  
pp. 1550189 ◽  
Author(s):  
Hsuan Tung Peng ◽  
Yew Kam Ho
Keyword(s):  
Quantum Entanglement ◽  
Excited States ◽  
Ground State ◽  
The Other ◽  
Von Neumann Entropy ◽  
Von Neumann ◽  
One Dimensional ◽  
Ultracold Bosonic Atoms ◽  
Bosonic Atoms ◽  
Atom System

We have investigated quantum entanglement for two interacting ultracold bosonic atoms in one-dimensional harmonic traps. The effective potential is modeled by delta interaction. For this two-atom system, we have investigated quantum entanglement properties, such as von Neumann entropy and linear entropy for its ground state and excited states. Using a computational scheme that is different from previously employed, a total of the lowest 16 states are studied. Here we show the dependencies of entanglement properties under various interacting strengths. Comparisons for the ground state entanglement are made with earlier results in the literature. New results for the other 15 excited states are reported here.

scholarly journals THE DISORDERING EFFECT ON THE ONE-DIMENSIONAL APPERIODIC OPTICAL SUPER-LATTICE IN MULTI-FREQUENCY SHG

2012 ◽  
Vol 15 ◽  
pp. 191-196 ◽  
Author(s):  
MAJID NEMATI
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
One Dimensional ◽  
Optical Superlattice ◽  
Super Lattice ◽  
Output Efficiency ◽  
The One ◽  
Aperiodic Crystals ◽  
Random Fluctuations

A multi-frequency second harmonic generation (SHG) in one dimensional nonlinear aperiodic optical superlattice in the presence of linear spacers is considered. The effect of random fluctuations in the length of each layer on the output efficiency of SHG process is investigated, and the favorable percentage of fluctuation in the fabrication of aperiodic optical superlattice is obtained. Comparing perfect and fluctuated aperiodic structures, the researcher realized the decrease in the amount of output efficiency with the increase of fluctuation in the linear-nonlinear aperiodic crystals.

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