Bloch oscillations of spin-orbit-coupled cold atoms in an optical lattice and spin-current generation

2019 ◽  
Vol 99 (2) ◽  
Author(s):  
Wei Ji ◽  
Keye Zhang ◽  
Weiping Zhang ◽  
Lu Zhou
Keyword(s):  
Optical Lattice ◽  
Cold Atoms ◽  
Spin Current ◽  
Spin Orbit ◽  
Bloch Oscillations ◽  
Current Generation

Probing Bloch oscillations using a slow-light sensor

2020 ◽  
Vol 9 (5) ◽  
pp. 243-246
Author(s):  
Pei-Chen Kuan ◽  
Chang Huang ◽  
Shau-Yu Lan
Keyword(s):  
Phase Shift ◽  
Optical Lattice ◽  
Cold Atoms ◽  
Slow Light ◽  
Internal State ◽  
Electromagnetically Induced Transparency ◽  
Bloch Oscillations ◽  
Bloch Oscillation ◽  
Induced Transparency ◽  
Transparency Condition

AbstractWe implement slow-light under electromagnetically induced transparency condition to measure the motion of cold atoms in an optical lattice undergoing Bloch oscillation. The motion of atoms is mapped out through the phase shift of light without perturbing the external and internal state of the atoms. Our results can be used to construct a continuous motional sensor of cold atoms.

scholarly journals Nonlinear spin current generation in noncentrosymmetric spin-orbit coupled systems

2017 ◽  
Vol 95 (22) ◽  
Author(s):  
Keita Hamamoto ◽  
Motohiko Ezawa ◽  
Kun Woo Kim ◽  
Takahiro Morimoto ◽  
Naoto Nagaosa
Keyword(s):  
Spin Current ◽  
Coupled Systems ◽  
Spin Orbit ◽  
Current Generation

scholarly journals Spin current generation and relaxation in a quenched spin-orbit-coupled Bose-Einstein condensate

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Chuan-Hsun Li ◽  
Chunlei Qu ◽  
Robert J. Niffenegger ◽  
Su-Ju Wang ◽  
Mingyuan He ◽  
...  
Keyword(s):  
Spin Current ◽  
Einstein Condensate ◽  
Spin Orbit ◽  
Current Generation ◽  
Bose Einstein Condensate ◽  
Bose Einstein

scholarly journals Spin current generation in organic antiferromagnets

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Makoto Naka ◽  
Satoru Hayami ◽  
Hiroaki Kusunose ◽  
Yuki Yanagi ◽  
Yukitoshi Motome ◽  
...  
Keyword(s):  
Hall Effect ◽  
Spin Current ◽  
Inorganic Materials ◽  
Spin Hall Effect ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Current Generation ◽  
Heavy Atoms ◽  
A Charge

Abstract Spin current–a flow of electron spins without a charge current–is an ideal information carrier free from Joule heating for electronic devices. The celebrated spin Hall effect, which arises from the relativistic spin-orbit coupling, enables us to generate and detect spin currents in inorganic materials and semiconductors, taking advantage of their constituent heavy atoms. In contrast, organic materials consisting of molecules with light elements have been believed to be unsuited for spin current generation. Here we show that a class of organic antiferromagnets with checker-plate type molecular arrangements can serve as a spin current generator by applying a thermal gradient or an electric field, even with vanishing spin-orbit coupling. Our findings provide another route to create a spin current distinct from the conventional spin Hall effect and open a new field of spintronics based on organic magnets having advantages of small spin scattering and long lifetime.

Theory of mechanical spin current generation via spin–orbit coupling

2014 ◽  
Vol 198 ◽  
pp. 57-60 ◽  
Author(s):  
Mamoru Matsuo ◽  
Jun′ichi Ieda ◽  
Sadamichi Maekawa
Keyword(s):  
Spin Current ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Current Generation

scholarly journals Bose–Hubbard Hamiltonian: Quantum chaos approach

2016 ◽  
Vol 30 (10) ◽  
pp. 1630009 ◽  
Author(s):  
Andrey R. Kolovsky
Keyword(s):  
Optical Lattice ◽  
Quantum Chaos ◽  
Quantum Physics ◽  
Cold Atoms ◽  
Equations Of Motion ◽  
Many Body ◽  
Bloch Oscillations ◽  
Classical Counterpart ◽  
Hubbard Hamiltonian ◽  
Quantum Analysis

We discuss applications of the theory of quantum chaos to one of the paradigm models of many-body quantum physics — the Bose–Hubbard (BH) model, which describes, in particular, interacting ultracold Bose atoms in an optical lattice. After preliminary, pure quantum analysis of the system we introduce the classical counterpart of the BH model and the governing semiclassical equations of motion. We analyze these equations for the problem of Bloch oscillations (BOs) of cold atoms where a number of experimental results are available. The paper is written for nonexperts and can be viewed as an introduction to the field.

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