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August 21, 2014 | 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 | 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 17, 2014 | Research News

Highly-Charged Ions

A new theoretical study conducted by JQI adjunct fellow Marianna Safronova and her colleagues from groups around the world provides the best yet study of how highly charged ions could be used for atomic timekeeping and for processing quantum information.

July 2, 2014 | Research News

Superconducting-Silicon Qubits

Theorists propose a way to make superconducting quantum devices such as Josephson junctions and qubits, atom-by-atom, inside a silicon crystal.

May 27, 2014 | Research News

Advanced Light

Michael Lewis’s bestselling book Flash Boys describes how some brokers, engaging in high frequency trading, exploit fast telecommunications to gain fraction-of-a-second advantage in the buying and selling of stocks. But you don’t need to have billions of dollars riding on this-second securities transactions to appreciate the importance of fast signal processing. From internet to video streaming, we want things fast.

May 23, 2014 | People News

Frontiers of Cold Matter

JQI fellow Paul Julienne has recently retired from NIST but continues to perform high-level theoretical research in the subject he helped to create---ultracold matter.  In honor of his birthday, a meeting called Frontiers of Cold Matter is being held May 29-30 at JQI.

May 5, 2014 | Research News

Stimulated Mutual Annihilation

JQI physicists report detailed calculations of the dynamics of a positronium BEC. This work is the first to account for effects of collisions between different positronium species. These collisions put important constraints on gamma-ray laser operation.

April 16, 2014 | People News

JQI Fellow Gretchen Campbell among PECASE awardees

Release from NIST Tech Beat, April 15, 2014

Three National Institute of Standards and Technology (NIST) researchers were among those honored April 14, 2014, at a White House reception as winners of Presidential Early Career Awards. The award is the highest honor bestowed by the United States government on science and engineering professionals in the early stages of their independent research careers.

March 19, 2014 | Research News

Cold Chaos

At sub-micro-kelvin temperatures atoms or molecules move so slowly that it is better to think of them as spread-out, wavelike things a micron or more across, many times larger than any putative bond length (typically sub-nanometer in size) that would characterize bound molecules. A new experiment conducted at the University of Innsbruck in Austria adds a new twist to this picture.

March 6, 2014 | Research News

Up-Converted Radio

Ever worry about losing your mobile-phone reception? The problem is a weak microwave signal. A new approach to this important problem provides a clean, all-optical detection of microwaves and radiowaves featuring noise mitigation a thousand times better than existing methods.

February 25, 2014 | PFC | Research News

How do you build a large-scale quantum computer?

Physicists led by ion-trapper Christopher Monroe at the JQI have proposed a modular quantum computer architecture that promises scalability to much larger numbers of qubits. The components of this architecture have individually been tested and are available, making it a promising approach. In the paper, the authors present expected performance and scaling calculations, demonstrating that their architecture is not only viable, but in some ways, preferable when compared to related schemes.

February 14, 2014 | Research News

Solitary Confinement

Atomic nuclei are governed by laws quite distinct from those that regulate atomic electrons, which constitute the outer part of atoms and which are immediately responsible for light, chemistry and thus life. Yet there are sporadic regions of contact between these disparate realms. JQI Adjunct Fellow Marianna Safronova and her collaborators have been exploring one area of nuclear-atomic overlap for the isotope thorium-229.

Upcoming Events

September 5, 2014
Peter Graham | Stanford University
September 8, 2014
Howard Carmichael | University of Auckland, New Zealand
September 15, 2014
TBD
Michal Lipson | Cornell

People News

Outreach

PFC and JQI researchers engage the public in quantum research. Click here to request a visit from one of our scientists!

Twitter Updates

People Profiles

  • James R. Williams

    James R. Williams is the newest JQI fellow, having arrived in March 2014. He is an assistant professor of physics at the University of Maryland, and his chief area of research is experimental condensed matter physics. Specifically, he specializes in understanding why certain one and two-dimensional materials (e.g. topological insulators, graphene) depart from normal conductivity provided by free electrons.

    Jimmy, as he likes to be called, almost didn’t go to college. All he wanted to do was work on cars. His mother forced him to apply to one college, so he choose Santa Clara University where he previously attended a basketball camp. He majored in engineering, but his favorite courses involved physics, so he changed direction again. This is how he arrived at his chosen area of research.

    Eventually he got a PhD from Harvard University in 2009 on the subject of grapheme, while studying under Charles M. Marcus. He was then a postdoctoral fellow at Stanford before coming to Maryland.

  • Crystal Senko

    Crystal Senko is a graduate student in Chris Monroe's ion trapping group. While in the group she has focused on ultrafast spin manipulation as well as quantum simulation of magnetism. Senko is an undergraduate alumni of Duke University, where she worked with Dan Gauthier on magneto-optical trapping using distributed feedback lasers.

  • Stephen Powell

    JQI alumnus Stephen Powell, JQI

    Stephen Powell, a former JQI postdoctoral fellow at CMTC, now works at the Nordic Institute of Theoretical Physics or Nordita in Stockholm, Sweden. His research in the group of Sankar Das Sarma centered around strongly correlated systems with a specific focus on frustrated magnetism and ultracold gases. At Nordita, he will continue this line of research, which is at the meeting point of condensed matter and atomic physics. In talking of his postdoctoral experience he says, “Something I've particularly enjoyed about being at JQI is having close contact with various experimental groups here.”

  • Phil Richerme

    Phil Richerme is a postdoc in Chris Monroe's Trapped Ion Quantum Information Group. He studies quantum magnetism using a well-controlled and well-isolated system of atomic ion spins, realizing Feynman's original proposal for a quantum simulator. These experiments probe the ground state and dynamical evolution of interacting spin systems, which are difficult (or impossible) for classical computers to calculate for even a few dozen spins. Phil received his Ph.D. from Harvard in 2012, working with Gerald Gabrielse and the ATRAP collaboration at CERN to trap antihydrogen atoms for sensitive tests of CPT symmetry.

  • David Hucul

    David Hucul

    David Hucul is a graduate student in Professor Chris Monroe's trapped ion quantum information lab at the Joint Quantum Institute. He earned undergraduate degrees in physics and chemistry in 2006 from the University of Michigan and a master's degree at MIT in 2009 under Wolfgang Ketterle. David started his PhD work with Chris Monroe in 2009 working on using frequency combs to entangle trapped ions. He now works on entangling trapped atoms within and between ion traps using both phonons and photons to create quantum networks.

    David became interested in atomic physics by accident, when he enjoyed an advanced chemistry course about spectroscopy and realized it was really physics. His first physics seminar was given by Chris Monroe, who was then a professor at Michigan. This made him a physicist. 

    He expects to finish his graduate studies sometime in 2015 and hopes to find a postdoctoral position after that.

  • Wes Campbell

    JQI alumnus Wes Campbell, JQI

    Wes Campbell is a JQI alumni and now a faculty member at UCLA where his group studies cold molecules and trapped ions. His cold molecule research is an outgrowth of the NSF Physics Frontier Center’s seed funding program, here at JQI.  While at JQI, Wes did research in Chris Monroe’s trapped ion quantum information group. Wes was instrumental in constructing an experiment that focuses on ultrafast gates with ions. Later in his postdoc, he worked on quantum simulations of magnetism with ion chains. More about his current group at http://campbellgroup.physics.ucla.edu/

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