scholarly journals Sub-micron period lattice structures of magnetic microtraps for ultracold atoms on an atom chip

2015 ◽  
Vol 48 (11) ◽  
pp. 115002 ◽  
Author(s):  
I Herrera ◽  
Y Wang ◽  
P Michaux ◽  
D Nissen ◽  
P Surendran ◽  
...  
Keyword(s):  
Ultracold Atoms ◽  
Lattice Structures ◽  
Atom Chip ◽  
Period Lattice

Single layer atom chip for magnetically trapping one-dimensional array of ultracold atoms

2010 ◽  
Vol 19 (8) ◽  
pp. 083205
Author(s):  
Cheng Feng ◽  
Yan Bo ◽  
Ke Min ◽  
Wang Yu-Zhu
Keyword(s):  
Ultracold Atoms ◽  
Single Layer ◽  
Atom Chip ◽  
One Dimensional ◽  
Dimensional Array

scholarly journals One-dimensional lattice of permanent magnetic microtraps for ultracold atoms on an atom chip

2008 ◽  
Vol 41 (6) ◽  
pp. 065301 ◽  
Author(s):  
M Singh ◽  
M Volk ◽  
A Akulshin ◽  
A Sidorov ◽  
R McLean ◽  
...  
Keyword(s):  
Ultracold Atoms ◽  
Atom Chip ◽  
Dimensional Lattice ◽  
One Dimensional

scholarly journals Spatially resolved photoionization of ultracold atoms on an atom chip

2007 ◽  
Vol 75 (6) ◽  
Author(s):  
S. Kraft ◽  
A. Günther ◽  
J. Fortágh ◽  
C. Zimmermann
Keyword(s):  
Ultracold Atoms ◽  
Atom Chip ◽  
Spatially Resolved

scholarly journals Magnetic Lattices for Ultracold Atoms

2019 ◽  
Vol 29 (2) ◽  
pp. 97
Author(s):  
Tien Duy Tran ◽  
Yibo Wang ◽  
Alex Glaetzle ◽  
Shannon Whitlock ◽  
Andrei Sidorov ◽  
...  
Keyword(s):  
Ultracold Atoms ◽  
Rydberg Atoms ◽  
Magnetic Films ◽  
Lattice Structures ◽  
One Dimensional ◽  
Quantum Tunnelling ◽  
Periodic Arrays ◽  
Spin Interactions ◽  
Magnetic Lattices ◽  
Bose Einstein

This article reviews the development in our laboratory of magnetic lattices comprising periodic arrays of magnetic microtraps created by patterned magnetic films to trap periodic arrays of ultracold atoms. Recent achievements include the realisation of multiple Bose-Einstein condensates in a 10 \(\mu\)m-period one-dimensional magnetic lattice; the fabrication of sub-micron-period square and triangular magnetic lattice structures suitable for quantum tunnelling experiments; the trapping of ultracold atoms in a sub-micron-period triangular magnetic lattice; and a proposal to use long-range interacting Rydberg atoms to achieve spin-spin interactions between sites in a large-spacing magnetic lattice.

Atom Chip-Based Microwave Potentials for Ultracold Atoms

2014 ◽  
Author(s):  
C. T. Fancher ◽  
A. R. Ziltz ◽  
A. J. Pyle ◽  
M. K. Ivory ◽  
S. Aubin
Keyword(s):  
Ultracold Atoms ◽  
Atom Chip

Loading a Permanent Magnetic Lattice with Ultracold Atoms on an Atom Chip

2007 ◽  
Author(s):  
Mandip Singh ◽  
Michael Volk ◽  
Alexander Akulshin ◽  
Russell McLean ◽  
Andrei Sidorov ◽  
...  
Keyword(s):  
Ultracold Atoms ◽  
Atom Chip

An atom chip for the manipulation of ultracold atoms

2009 ◽  
Vol 87 (6) ◽  
pp. 633-638 ◽  
Author(s):  
O. Cherry ◽  
J. D. Carter ◽  
J. D.D. Martin
Keyword(s):  
Magnetic Field ◽  
Ultracold Atoms ◽  
Cold Atoms ◽  
Atom Chip ◽  
Adhesion Layer ◽  
Field Gradients ◽  
Magnetic Field Gradients ◽  
Lift Off ◽  
20 Nm ◽  
Si Wafer

We have fabricated an atom chip that magnetically traps laser cooled 87Rb by generating high magnetic-field gradients using micrometre scale current-carrying wires. The wires are fabricated on a Si wafer (with a 40 nm SiO2 layer) using 1.2 μm thick Au and a 20 nm thick adhesion layer, and are patterned with lift-off photolithography. We characterize the number and temperature of the cold atoms trapped by the chip.

Backscattered Electron Imaging of GaAs/AlGaAs Super Lattice Structures with an Ultra-High- Resolution SEM

1988 ◽  
Vol 46 ◽  
pp. 204-205
Author(s):  
Kazumichi Ogura ◽  
Michael M. Kersker
Keyword(s):  
High Resolution ◽  
Layer Structure ◽  
High Sensitivity ◽  
Beam Current ◽  
Electron Beam Current ◽  
Lattice Structures ◽  
Super Lattice ◽  
Different Types ◽  
Backscattered Electron ◽  
Electron Imaging

Backscattered electron (BE) images of GaAs/AlGaAs super lattice structures were observed with an ultra high resolution (UHR) SEM JSM-890 with an ultra high sensitivity BE detector. Three different types of super lattice structures of GaAs/AlGaAs were examined. Each GaAs/AlGaAs wafer was cleaved by a razor after it was heated for approximately 1 minute and its crosssectional plane was observed.First, a multi-layer structure of GaAs (100nm)/AlGaAs (lOOnm) where A1 content was successively changed from 0.4 to 0.03 was observed. Figures 1 (a) and (b) are BE images taken at an accelerating voltage of 15kV with an electron beam current of 20pA. Figure 1 (c) is a sketch of this multi-layer structure corresponding to the BE images. The various layers are clearly observed. The differences in A1 content between A1 0.35 Ga 0.65 As, A1 0.4 Ga 0.6 As, and A1 0.31 Ga 0.69 As were clearly observed in the contrast of the BE image.

Lattice imaging of precipitates in Al-Zn-Mg alloy

1986 ◽  
Vol 44 ◽  
pp. 412-413
Author(s):  
C. K. Wu
Keyword(s):  
Grain Boundaries ◽  
Homogeneous Nucleation ◽  
Alloy System ◽  
Mg Alloy ◽  
List Type ◽  
Lattice Structures ◽  
Type Number ◽  
Orientation Relationships ◽  
Lattice Imaging ◽  
The Matrix

The precipitation phenomenon in Al-Zn-Mg alloy is quite interesting and complicated and can be described in the following categories:(i) heterogeneous nucleation at grain boundaries;(ii) precipitate-free-zones (PFZ) adjacent to the grain boundaries;(iii) homogeneous nucleation of snherical G.P. zones, n' and n phases inside the grains. The spherical G.P. zones are coherent with the matrix, whereas the n' and n phases are incoherent. It is noticed that n' and n phases exhibit plate-like morpholoay with several orientation relationship with the matrix. The high resolution lattice imaging techninue of TEM is then applied to study precipitates in this alloy system. It reveals the characteristics of lattice structures of each phase and the orientation relationships with the matrix.

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