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The Joint Quantum Institute (also called JQI) is a research organization operated by the University of Maryland (UMD) in College Park, Maryland and the National Institute of Standards and Technology (NIST) in Gaithersburg, Maryland. Research at JQI is focused on theoretical and experimental quantum science, including such sub-disciplines as atomic-molecular-optical physics (AMO), condensed matter physics, and quantum information science.

Facilities
Labs and offices of JQI scientists are located at both sponsoring institutions, but the administrative offices are on the University of Maryland campus, with close ties to the physics department. JQI also has an affiliation with the Laboratory for Physical Sciences (LPS), located near the university campus in College Park.

JQI is the host for a Physics Frontier Center (PFC), one of only a handful of so-named research centers funded by the National Science Foundation (NSF). The specific JQI-research activities here include the study of correlated matter, supercircuits, and quantum optics. JQI is closely associated with the Joint Center for Quantum Information and Computer Science (QuICS), another NIST-Maryland collaboration located at the University of Maryland.

Research
JQI scientists carry out a broad spectrum of research in a variety of atomic, optical, and condensed-matter physics fields. Specific topics and measurements include:


 * the conversion of radio signals into optical signals using nanomechanical, room temperature devices
 * the design of future modular quantum computer registers
 * the simulation of exotic magnetic states among atoms residing in optical lattices
 * the observation of topological states in photons circulating around micro-ring arrays
 * the observation of hysteresis and other properties in an atomtronic circuit
 * the counting of single photons used to determine optical modes of light sent down fibers
 * high-efficiency photon heralding
 * frustration among trapped ions used in quantum simulations
 * demonstrating quantum logic gates in quantum dots
 * theoretical approaches to topological insulators
 * optical memory storage in a vapor
 * theoretical studies of topological materials and search for Majorana particles
 * first observation of the quantum Hall effect in a BEC
 * fast, low-power, all-optical switches
 * laser-cooling of electronic circuits
 * synthetic partial waves in ultracold atomic collisions
 * the observation and theory of three-atom Efimov states
 * artificial forces and spin-orbit coupling in a gas
 * entangling ions at a large distance
 * stimulated mutual annihilation with positronium atoms and making a gamma-ray laser
 * fast-light and slow-light media
 * using highly-charged ions in clocks and qubits
 * using MRI-like methods to monitor ions in a trap
 * producing 2-dimensional electron liquids in gate-tuned channels between superconductors
 * sub-wavelength interference using thermal light
 * microfluidic manipulation of quantum dots
 * superfluid flow in a BEC

People
JQI personnel includes about 30 fellows (split roughly evenly between the university and NIST), about 5 adjunct and emeritus fellows, and about 100 postdoctoral fellows and graduate students. Some of the students, even though enrolled in College Park, perform research at the NIST facility. Conversely, most NIST JQI fellows are adjunct professors at the university, supervise students, and have offices or labs in College Park.

JQI scientists have won many awards. William D. Phillips (NIST) shared the Nobel Prize in physics in 1997 for his work on laser cooling of atoms. Presidential Early Career Awards for Scientists and Engineers (PECASE) have been given to JQI fellows Ian Spielman, Jacob Taylor, and Gretchen Campbell.