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PFC Group Photo
September 25, 2008 | Research News

JQI Awarded New Physics Frontier Center

The National Science Foundation has awarded theJoint Quantum Institute $12.5 million over five years to create and operate a Physics Frontier Center (PFC) at the University of Maryland (UMD) College Park campus. The center will pursue cutting-edge investigations of coherence and entanglement -- two fundamental elements of the physics of quantum information.

The PFC award will fund 17 graduate students, ...

Quantum Dots in a Whole New Light
September 24, 2008 | Research News

Quantum Dots in a Whole New Light

A team headed by JQI Fellow Glenn Solomon of NIST has reached a new milestone in understanding and manipulating the exotic creations called “quantum dots,” or QDs for short (see reference publication).

QDs are artificial three-dimensional structures, made of semiconductor material, that are only a few tens of nanometers at their widest. That’s small: About 1,000 dots placed side by ...

Ultracold Polar Molecules
September 18, 2008 | Research News

Ultracold Polar Molecules

Scientists at JILA, a joint institute of the National Institute of Standards and Technology (NIST), the University of Colorado at Boulder (CU-Boulder) and the Joint Quantum Institute have applied their expertise in ultracold atoms and lasers to produce the first high-density gas of ultracold molecules—two different atoms bonded together—that are both stable and capable of strong interactions.

A JQI team wants to see to what extent a toroid BEC (yellow) will act like a SQUID, with a sheet of light (green) functioning as a tunnel barrier, and its motion serving as magnetic field in a superconducting Josephson junction.
September 15, 2008 | Research News

Stirring Up New Physics in Toroidal BECs

Quantum effects don’t usually intrude into daily life. That’s a fortunate state of affairs for a person who needs to know, say, the position and speed of his car at the same time.

September 9, 2008 | Research News

Spin Control: Modeling the Transistor of the Future

The Next Big Thing in microelectronics will be extremely small. And it probably will not be entirely electronic. As transistor dimensions continue to shrink, and computing demands continue to grow, pushing bunches of electrical charges around in semiconductors can start to look like an awfully bulky, slow and power-hungry business. So in addition to expressing digital information as the presence ...

The Lyman alpha radiation detector, shown here in prototype, could dramatically improve performance in key applications.
September 4, 2008 | Research News

New Neutron Detector Makes R&D Top 100

A new ultrasensitive, high-bandwidth neutron detector, developed by JQI Fellow Charles Clark and colleagues from the National Institute of Standards and Technology (NIST) and the University of Maryland (UMD), has won a 2008 “R&D 100 Award.” The annual R&D 100 Award program recognizes “the 100 most technologically significant products introduced into the market “ during the previous year, as selected ...

July 15, 2008 | Research News

Quantum-Entangled Images: Mix and Squeeze

Using a convenient and flexible method for creating twin light beams, JQI researchers from the National Institute of Standards and Technology have produced “quantum images,” pairs of information-rich visual patterns whose features are “entangled,” or inextricably linked by the laws of quantum physics.

In addition to promising better detection of faint objects and improved amplification and positioning of light beams, ...

June 18, 2008 | Research News

Altered States and Logic Gates

Whether it’s quantum-mechanical or classical, information processing must consist of stupendous numbers of very simple actions performed by “logic gates” that obey if-then, and-or rules. For example: If X has some value, then change Y to the same value. Or change Y to the opposite value. And so forth. In conventional computers, transistors perform those tasks and pass the results ...

June 4, 2008 | Research News

How to Talk to Your Quantum Computer

No matter how exotic the innards of tomorrow’s quantum computers may be, users will still have to communicate with them using classical electronic circuits.

That deceptively simple statement conceals a host of very complicated problems. Every physical system under consideration as a quantum data bit (“qubit”) -- whether it consists of neutral atoms, ions, electron/ nuclear spins, quantum dots or ...

May 7, 2008 | Research News

A New State of the Fifth State

If a group of JQI researchers is right, one of the strangest phenomena in nature has an even stranger side that could lead to previously unseen kinds of atomic behavior, and possibly to a means of robustly fault-tolerant quantum computation.

Their goal is a radical variation on a condition called Bose-Einstein condensation, often deemed the “fifth state” of matter after ...

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