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boson spin-hall thumb
October 20, 2014 | PFC | Research News

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.

Interfering Waves
October 10, 2014 | PFC | Research News

Getting sharp images from dull detectors

A new extreme for sub-wavelength interference has been achieved by JQI scientists using thermal light and small-photon-number light detection. Achieving this kind of sharp interference pattern could be valuable for performing a variety of high-precision physics and astronomy measurements.

October 8, 2014 | PFC | Research News

A cold-atom ammeter

JQI scientists have added an important technique to the atomtronics arsenal, a method for analyzing a superfluid circuit component called a ‘weak link’. The result, detailed in the online journal Physical Review X, is the first direct measurement of the current-phase relationship of a weak link in a cold atom system.

August 21, 2014 | PFC | Research News

On-chip Topological Light

JQI researchers led by Mohammad Hafezi report detailed measurements of the transmission (how much energy is lost) and delay for edge-state light and for bulk-route light on a photonic chip.

July 31, 2014 | People News

Two JQI undergraduates honored for their thesis work

Ike Uchenna Chukwu and Burkley Patterson were recently both named recipients of the 2014 IPST Monroe Martin Prize for Undergraduate Research in Physics. 

Burkley's work was titled "Construction and Experiments with a Cavity QED system." He will be continuing his work, now as a graduate student, in Luis Orozco's Cavity QED experiment, which is supported by NSF.

July 31, 2014 | PFC | Research News

Spin Diagnostics

Recently physicists led JQI Fellow Christopher Monroe have executed an MRI-like diagnostic on a crystal of interacting quantum spins. They predict that their method is scalable and may be useful for validating experiments with much larger ensembles of interacting spins.

July 9, 2014 | PFC | Research News

Making Quantum Connections

In quantum mechanics, interactions between particles can give rise to entanglement, which is a strange type of connection that could never be described by a non-quantum, classical theory. These connections, called quantum correlations, are present in entangled systems even if the objects are not physically linked (with wires, for example). Entanglement is at the heart of what distinguishes purely quantum systems from classical ones; it is why they are potentially useful, but it sometimes makes them very difficult to understand.

June 26, 2014 | People News

Trey Porto speaks at "Science Cafe"

This event took place at the Busboys and Poets restaurant in downtown Washington, DC, and was part of a series of presentations meant to bring science to the public. Trey's topic was supercold atoms. After his talk he answered questions for an hour.

May 19, 2014 | People News

JQI welcomes new Fellow Mohammad Hafezi

Mohammad Hafezi has accepted a position as a JQI Fellow and Assistant Professor in UMD's Electrical and Computer Engineering Department. He started at JQI in 2009 in Jake Taylor's group as a postdoc and was promoted to senior research associate in 2012. He works at the interface of condensed matter theory and quantum optics. The focus of his research is on theoretical and experimental investigations of artificial gauge fields and topological order in photonics systems. Such systems can be exploited as robust optical devices insensitive to disorder.

May 14, 2014 | PFC | People News

JQI papers featured as New Journal of Physics "Highlights of 2013"

Papers from the groups of Ian Spielman and Jake Taylor were recently chosen as "Highlights of 2013" by the New Journal of Physics. The articles are listed below To see more highlights, visit http://iopscience.iop.org/1367-2630/page/highlights-of-2013

April 17, 2014 | People News

JQI at DAMOP

The June 2-6, 2014 meeting of the American Physical Society’s Division of Atomic, Molecular, and Optical Physics (DAMOP) is one of the best showings of JQI research during the entire year. The following papers with JQI authors will be presented at the meeting in Madison, Wisconsin.

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