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August 21, 2015 | PFC | Research News

Thermometry using an optical nanofiber

Experimental quantum physics often resides in the coldest regimes found in the universe, where the lack of large thermal disturbances allows quantum effects to flourish. A key ingredient to these experiments is being able to measure just how cold the system of interest is. Laboratories that produce ultracold gas clouds have a simple and reliable method to do this: take pictures! The temperature of a gas depends on the range of velocities among the particles, namely the size of the difference between the slowest- and the fastest-moving particles.

July 27, 2015 | PFC | Research News

Interacting Ion Qutrits

Symmetry permeates nature, from the radial symmetry of flowers to the left-right symmetry of the human body. As such, it provides a natural way of classifying objects by grouping those that share the same symmetry. This is particularly useful for describing transitions between phases of matter. For example, liquid and gas phases have translational symmetry, meaning the arrangement of ...

July 27, 2015 | PFC | People News

Gretchen Campbell receives IUPAP Young Scientist Prize

JQI Fellow and NIST Scientist Gretchen Campbell has recently been announced as the IUPAP 2015 Young Scientist Prize recipient in the field of Atomic, Molecular, and Optical Physics. The organization cited her "outstanding contributions in toroidal Bose-Einstein condensates and its application to "atomtronic" circuits." 

The International Union of Pure and Applied Physics (IUPAP) was established in 1922 in Brussels with 13 ...

July 22, 2015 | PFC | Research News

Qubit Chemistry

A big part of the burgeoning science of quantum computation is reliably storing and processing information in the form of quantum bits, or qubits.  One of the obstacles to this goal is the difficulty of preserving the fragile quantum condition of qubits against unwanted outside influence even as the qubits interact among themselves in a programmatic way. 

Spin qubits are ...

June 12, 2015 | PFC | Research News

Collecting Lost Light

Optical fibers are hair-like threads of glass used to guide light. Fibers of exceptional purity have proved an excellent way of sending information over long distances and are the foundation of modern telecommunication systems. Transmission relies on what’s called total internal reflection, wherein the light propagates by effectively bouncing back and forth off of the fiber’s internal surface. Though the ...

May 26, 2015 | People News

JQI undergraduate honored for thesis work

Michael Kossin, an undergraduate who works with JQI Fellow Luis Orozco, has been awarded an IPST Monroe Martin Prize for Undergraduate Research in Physics for his paper, "Production of a Polarizing Millimeter-Wave Fabry-Perot Resonator.” He also earned Departmental High Honors. This summer Kossin will work with Professor Alejandro Garcia at the University of Washington, whose research involves weak interactions in the ...
May 11, 2015 | People News

JQI Fellow Mohammad Hafezi Receives ONR Young Investigator Award

JQI Fellow Mohammad Hafezi was announced as a recipient of a 2015 ONR Young Investigator award. ONR's website describes the program as being designed to promote the professional development of early-career academic scientists – called investigators, or YIPs – both as researchers and instructors. For awardees, the funding supports laboratory equipment, graduate student stipends and scholarships, and other expenses critical ...

May 6, 2015 | People News

Gretchen Campbell among finalists for Service to America Medal

Gretchen Campbell, a JQI Fellow and NIST Physicist, has been selected as a 2015 Finalist for a Service to America Medal. The highly respected honor highlights dedicated federal workers who have made significant contributions to our country. According to the award website, "The Sammies, known as the “Oscars” of government service, are a highly respected honor with a vigorous ...

April 27, 2015 | People News

JQI at Maryland Day 2015

Despite cold weather and cloudy skies, UMD's annual Maryland Day (April 25, 2015) attracted thousands of visitors eager to learn about the university. The JQI was again located on the lawn outside the Physics Building, and provided fun examples and analogs of quantum topics with demonstrations of parametric down conversion, wave-particle duality, charged dust traps, and the Meissner effect. The JQI thanks ...

April 23, 2015 | PFC | Research News

Tightening the Bounds on the Quantum Information 'Speed Limit'

If you’re designing a new computer, you want it to solve problems as fast as possible. Just how fast is possible is an open question when it comes to quantum computers, but JQI physicists have narrowed the theoretical limits for where that “speed limit” is. The work implies that quantum processors will work more slowly than some research has suggested.  ...

April 14, 2015 | People News

Single photon detection system among nominees for UMD's "Most Promising Inventions" for 2014

For University of Maryland researchers, the last year has marked a series of new discoveries and innovations. UMD will honor nine nominees for the most promising new inventions at the Celebration of Innovation and Partnerships event on April 29, 2015. UMD’s 

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