Latest News and Research
Latest News and Research
Interacting Ion QutritsEnlisting symmetry to protect quantum states from disruptions
In quantum mechanics, symmetry describes more than just the patterns that matter takes — it is used to classify the nature of quantum states. These states can be entangled, exhibiting peculiar connections that cannot be explained without the use of quantum physics. For some entangled states, the symmetry of these connections can offer a kind of protection against disruptions. Physicists are... Continue Reading
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... Continue Reading
Qubit ChemistryControlling interactions between distant qubits
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 one of the most... Continue Reading
Collecting Lost LightRayleigh scattering reveals light propagation in optical nanfibers
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. JQI researchers in collaboration with scientists from the Naval Research Laboratory have developed a new technique for visualizing light propagation through an optical... Continue Reading
Moving out of equilibriumMagnetization dynamics in a checkerboard optical lattice
- May 26, 2015
- Research News
In the quest to better explain and even harness the strange and amazing behaviors of interacting quantum systems, well-characterized and controllable atomic gases have emerged as a tool for emulating the behavior of solids. This is because physicists can use lasers to force atoms in dilute quantum gases to act, in many ways, like electrons in solids. The hope is studying the same physics in... Continue Reading
JQI undergraduate honored for thesis workMichael Kossin earns IPST Monroe Martin Prize and Departmental High Honors
- May 26, 2015
- People News
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 ... Continue Reading
JQI Fellow Mohammad Hafezi Receives ONR Young Investigator Award
- May 11, 2015
- People News
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... Continue Reading
JQI at Maryland Day 2015Crowds brave cold temperatures to see cool physics
- April 27, 2015
- People News
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 Toll 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... Continue Reading
James R. Williams
James R. Williams is a JQI Fellow and assistant professor of physics, 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.
Campbell is a NIST JQI fellow and works in the Laser Cooling and Trapping group. In her atom circuits lab, reserachers probe Na BECs in toroidal traps. The goals of these experiments include studying superfluidity, as well as superfluid analogs to superconducting circuits. A second experiment with ultracold strontium is being built. She received a Ph.D from MIT in 2006, where she worked with Wolfgang Ketterle and Dave Pritchard. There, she used Rb BECs in optical lattices to study atom interferometry, nonlinear atom optics and the superfluid – Mott insulator phase transition. These experiments included the first direct observation of the atomic recoil momentum in dispersive media. More recently, she worked with Jun Ye on precision measurements and frequency metrology with an 87Sr optical lattice clock.
Xiapeng Li is a JQI Postdoctoral Fellow working in CMTC. His research interest is primarily in quantum condensed matter. His work covers novel states of matter in both well-controlled ultracold atomic systems and in complex electronic materials. He has been have been studying a broad range of systems, such as atomic p-orbital systems in optical lattices, dipolar quantum gases, and complex oxides. Some of his current efforts focus on (1) emergent spin orbital couplings and gauge fields in spinor Bose gases and Bose-Fermi mixtures as well as (2) band crossing and multi-orbital superconductivity, spin spirals and skyrmions in oxides and heterostructures. Li received his Ph.D. from the University of Pittsburgh and was an undergraduate at the University of Science and Technology of China, Hefei, Anhui, China.
Mary Lyon is originally from Princeton, New Jersey. She attended Bryn Mawr College, where she earned both her undergraduate degree in physics and a high school teaching certificate. Lyon originally planned to be a high school physics teacher, but discovered a love for research during a summer program at MIT the summer after her junior year. She briefly taught high school in Columbus, GA before going to graduate school at Brigham Young University, where she worked with Scott Bergeson on strongly coupled ultracold neutral plasmas. She is currently a JQI postdoctoral researcher in the group of Trey Porto and Steve Rolston where she is building a new quantum information experiment that will use an ensemble of cold Rydberg atoms.
Crystal Senko was a graduate student in Chris Monroe's ion trapping group. While in the group she focused on ultrafast spin manipulation as well as quantum simulation of magnetism. She is now a postdoctoral researcher with Mikhail Lukin at Harvard. Senko is an undergraduate alumni of Duke University, where she worked with Dan Gauthier on magneto-optical trapping using distributed feedback lasers.
Alexey V. Gorshkov
Alexey Gorshkov is a JQI fellow and theoretical physicist at NIST. He grew up in Moscow until his parents brought him to Boston when he was in 10th grade. In high school, he was good at math, so that's what he was planning to do in college, but then math ended up being too dry. Physics offered a perfect alternative since it involved lots of interesting mathematics and grappled with problems related to real life.
He attended Harvard for his undergraduate and graduate degrees, obtaining a physics PhD in 2010 studying under Mikhail Lukin. After that he was a postdoctoral fellow at Caltech, working with John Preskill. He won numerous university teaching and research awards during these years.
His research is at the intersection of AMO physics, condensed matter physics, and quantum information science. He has authored dozens of papers and has a patent entitled: “Scalable Room Temperature Quantum Information Processor.”
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