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Image depicts photonic edge state in a 2D array of resonators. Transmission of light is protected from defects because the system exhibits a photonic version of the quantum spin Hall effect. (Image credit: E. Edwards)
August 22, 2011 | Research News

Miniaturizing Delay Lines

Information traveling near the speed of light always sounds a little like science fiction. But this is what we get whenever we connect to the internet or watch cable television. Small packets of light called photons travel kilometers over networks of optical fiber, bringing information into our homes.

If fiber optic cable is ideal for carrying information, why haven’t photons ...

Cartoon depicting anti-ferromagnetic order (upper) compared to a spin liquid phase (lower). In an anti-ferromagnet, the spins are anti-aligned. A spin liquid has no order and the spins can be viewed as bobbing about like water molecules in liquid water. (Image credit: E. Edwards)
August 12, 2011 | Research News

Searching for Spin Liquids

The world economy is becoming ever more reliant on high tech electronics such as computers featuring fingernail-sized microprocessors crammed with billions of transistors.

Understanding Quantum Magnetism
July 6, 2011 | Research News

Understanding Quantum Magnetism, Atom by Atom

Joint Quantum Institute (JQI) researchers led by Christopher Monroe, with theoreticians from University of Michigan, University of Auckland, and Georgetown University have observed a quantum ferromagnet using a nine ion crystal, in an atom-by-atom approach to quantum simulations of magnetism. These new results appear in the July 5, 2011 issue of Nature Communications in a paper entitled "Onset ...

False color images of atom circuit, JQI/NIST
March 30, 2011 | Research News

The First Non-Trivial Atom Circuit

Researchers from the National Institute of Standards and Technology (NIST) and the University of Maryland (UM) have created the first nontrivial "atom circuit," a donut-shaped loop of ultracold gas atoms circulating in a current analogous to a ring of electrons in a superconducting wire.

The researchers create a synthetic electric field (E*) in an ultracold gas of several hundred thousand rubidium atoms (BEC) immersed in a constant magnetic field (B0). Using lasers (red arrows), the team alters the atoms’ energy-momentum relationship, which causes the atoms to move in a way that is physically identical—and mathematically equivalent—to how a charged particle would move in an electric field. credit: NIST
March 30, 2011 | Research News

Neutral Atoms Made to Act Like Electrically Charged Particles

Completing the story they started by creating synthetic magnetic fields, scientists from the Joint Quantum Institute (JQI), a collaboration of the National Institute of Standards and Technology (NIST) and the University of Maryland, have now made atoms act as if they were charged particles accelerated by electric fields.

2010 Three Arthur S. Flemming award recipients
March 24, 2011 | People News

JQI Fellow Ian Spielman and two NIST Colleagues Win Flemming Award

Three scientists at the National Institute of Standards and Technology (NIST) have been chosen to receive the Arthur S. Flemming award, recognizing distinguished service in the federal government.

March 22, 2011 | Research News

Floquet Topological Insulators

Researchers at the Joint Quantum Institute (JQI) and the California Institute of Technology have shown that it may be possible to take a conventional semiconductor and endow it with topological properties without subjecting the material to extreme environmental conditions or fundamentally changing its solid state structure. In their Nature Physics (appeared online March 13, 2011) article titled “Floquet topological insulators in ...

March 3, 2011 | Research News

JQI Physicists Demonstrate Coveted ‘Spin-Orbit Coupling’ for the First Time in Ultracold Atomic Gases

Physicists at the Joint Quantum Institute (JQI), a collaboration of the National Institute of Standards and Technology (NIST) and the University of Maryland-College Park, have for the first time caused a gas of atoms to exhibit an important quantum phenomenon known as spin-orbit coupling.

Ian Spileman and Edo Waks receive PECASE award.
November 8, 2010 | People News

JQI Fellows Edo Waks and Ian Spielman Receive PECASE Award

JQI Fellows Edo Waks of the University of Maryland (UMD) and Ian Spielman of the National Institute of Standards and Technology (NIST) are among 85 scientists and engineers nationally to receive this year's Presidential Early Career Awards for Scientists and Engineers (PECASE). The PECASE Award is the highest honor bestowed by the U.S. government on outstanding scientists and engineers beginning ...

September 1, 2010 | Research News

NIST Researchers Create 'Quantum Cats' Made of Light

Researchers at the National Institute of Standards and Technology (NIST) have created "quantum cats" made of photons (particles of light), boosting prospects for manipulating light in new ways to enhance precision measurements as well as computing and communications based on quantum physics.

The NIST experiments, described in a forthcoming paper co-authored by JQI fellow Alan Migdall,* repeatedly produced light pulses ...