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Research News

July 9, 2013 | Research News

A “Hot Spot” for Quantum Information

A JQI-theory/TU Delft-experimental collaboration has recently published results that could be used to rapidly and reliably reset a qubit stored in a semiconductor double quantum dot.

June 18, 2013 | PFC | Research News

Quantum Information in Low Light

JQI researchers in the lab of Alan Migdall, demonstrate how one category of photo-detection system can make highly accurate readings of incoming information at the single-photon level by allowing the detector in some instances not to give a conclusive answer.

June 5, 2013 | PFC | Research News

Spin Hall Effect in a Quantum Gas

JQI Researchers have reported* the first observation of the "spin Hall effect" in a Bose-Einstein condensate.This is a step toward applications in "atomtronics"—the use of ultracold atoms as circuit components.

June 3, 2013 | PFC | Research News

Entanglement in a Flash

JQI researchers under the direction of Chris Monroe have produced quantum entanglement between a single atom’s motion and its spin state thousands of times faster than previously reported, demonstrating unprecedented control of atomic motion.

Coming into Existence
May 20, 2013 | Research News

Coming into Existence

An experiment conducted at the Joint Quantum Institute establishes a new record for heralding efficiency for a pair of entangled photons (particles of light).

May 2, 2013 | PFC | Research News

Turning on Frustration

This week’s issue of Science Magazine features new results from the research group of Christopher Monroe at the JQI, where they explored how to frustrate a quantum magnet comprised of sixteen atomic ions – to date the largest ensemble of qubits to perform a simulation of quantum matter.

Reducing Noise in Qubit Arrays
April 24, 2013 | Research News

Reducing Noise in Qubit Arrays

If quantum computers are ever to be built, qubits will have to be made more robust and more numerous. Qubits can easily lose their orientation in a process called decoherence when confronted with a noisy environment. Also, to enable true quantum computing, they will have to link up in large arrays. New work by scientists at the JQI addresses both of these concerns---noise reduction and scalability.

March 31, 2013 | PFC | Research News

Quantum Dot Commands Light

All computers, even the future quantum versions, use logic operations or “gates,” which are the fundamental building blocks of computational processes. JQI scientists, led by Professor Edo Waks, have performed an ultrafast logic gate on a photon, using a semiconductor quantum dot.

March 27, 2013 | Research News

Optical Random Access Memory

The sequence of images that constitute Hollywood movies can be stored handily on solid-state media such as magnetic tape or compact diskettes. At the JQI images can be stored in something as insubstantial as a gas of rubidium atoms.

March 7, 2013 | PFC | Research News

The Future of Ion Traps

Recently Science Magazine invited JQI fellow Chris Monroe and Duke Professor Jungsang Kim to speculate on ion trap technology as a scalable option for quantum information processing. The article is highlighted on the cover of this week’s (March 8, 2013) issue, which is dedicated to quantum information. The cover portrays a photograph of a surface trap that was fabricated by Sandia National Labs and used to trap ions at JQI and Duke, among other laboratories.

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