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Research Highlights

Published: Fri, 04/21/2017 - 8:15am

The Regal group recently met the challenge of measurements in an extreme situation with a device called an interferometer. The researchers succeeded by using creative alterations to the device itself and quantum correlations. Quantum correlations are unique, and often counterintuitive, quantum mechanical interactions that occur among quantum objects such as photons and atoms. The group exploited these interactions in the way they set up their interferometer, and improved its ability to measure tiny motions using photons (particles of light).

The group started with an ordinary interferometer, a device that has long been used for making precision measurements. However, this particular interferometer included a tiny vibrating membrane. In typical interferometers, sending more photons into the device improves the measurement precision.  But, the Regal group accesses a strange regime in which sending more photons into the interferometer actually reduced the precision of the measurements.

But instead of giving up on improving their measurements, the researchers were able to make a record-setting measurement of a vibrating mechanical membrane in the interferometer....

Published: Apr 21, 2015

The Ye group has just improved the accuracy of the world’s best optical atomic clock by another...

Published: Apr 20, 2015

The Ye Group recently investigated what first appeared to be a “bug” in an experiment and made...

Published: Mar 23, 2015

One of the great challenges in the semiconductor and electronics industries is that as nanoscale...

Published: Mar 11, 2015

Supermassive black holes at the center of active galaxies are known as blazars when they are...

Published: Mar 02, 2015

The photoelectric effect has been well known since the publication of Albert Einstein’s 1905...

Published: Feb 27, 2015

When the Rey theory group first modeled a quantum system at JILA, it investigated the...

Published: Jan 20, 2015

Because red fluorescent proteins are important tools for cellular imaging, the Jimenez group is...

Published: Dec 10, 2014

Until recently, researchers who wanted to understand how magnetic materials work had to reserve...

Published: Oct 31, 2014

New theory describing the spin behavior of ultracold polar molecules is opening the door to...

Published: Oct 14, 2014

Dynamical phase transitions in the quantum world are wildly noisy and chaotic. They don’t look...

Published: Aug 25, 2014

A Be star is a luminous, blue B-type star with distinctive spectral lines that can provide two...

Published: Aug 18, 2014

Symmetries described by SU(N) group theory made it possible for physicists in the 1950s to...

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