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Items tagged with "spin-orbit coupling"

March 30, 2016

Measuring the magnetization of wandering spins

The swirling field of a magnet—rendered visible by a sprinkling of iron filings—emerges from the microscopic behavior of atoms and their electrons. In permanent magnets, neighboring atoms align and lock into place to create inseparable north and south poles. For other materials, magnetism can be induced by a field strong enough to coax atoms into alignment.

boson spin-hall thumb
October 20, 2014

Restoring Order

Every electrical device is enabled by the movement of charge, or current. ‘Spintronics’ taps into a different electronic attribute, an intrinsic quantum property known as spin, and may yield devices that operate on the basis of spin-transport. JQI/CMTC theorists have been developing a model for what happens when spins are trapped in an optical lattice structure with a “double-valley” feature. This new result opens up a novel path for generating what’s known as the spin Hall effect, an important example of spin-transport.

September 20, 2013

Simulation sets atoms shivering

JQI researchers perform a quantum simulation of the 1D Dirac equation, by assembling an analogue system of neutral atoms in a Bose-Einstein condensate.

July 9, 2013

A “Hot Spot” for Quantum Information

A JQI-theory/TU Delft-experimental collaboration has recently published results that could be used to rapidly and reliably reset a qubit stored in a semiconductor double quantum dot.

June 5, 2013

Spin Hall Effect in a Quantum Gas

JQI Researchers have reported* the first observation of the "spin Hall effect" in a Bose-Einstein condensate.This is a step toward applications in "atomtronics"—the use of ultracold atoms as circuit components.

October 17, 2012

Bus Service for Qubits

Superconducting circuits speak directly with semiconductor-based qubits to push forward the technology needed for quantum computing.

May 21, 2012

A Magnetic Approach to Lattices

As an extension of their work on generating synthetic fields, Ian Spielman's group has developed a new kind of lattice for atoms.

April 17, 2012

Finding Majorana - Update

A group at Delft University in the Netherlands led by L.P. Kouwenhoven has published experimental signatures of Majorana particles. The experiment precisely follows the theoretical proposals made in 2010 by Sankar Das Sarma and his collaborators at JQI.

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