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Items tagged with "ion trap"

February 25, 2014

How do you build a large-scale quantum computer?

Physicists led by ion-trapper Christopher Monroe at the JQI have proposed a modular quantum computer architecture that promises scalability to much larger numbers of qubits. The components of this architecture have individually been tested and are available, making it a promising approach. In the paper, the authors present expected performance and scaling calculations, demonstrating that their architecture is not only viable, but in some ways, preferable when compared to related schemes.

November 25, 2013

Coherence Time: Survival of a Quantum State

How long can a quantum superposition state survive? That length of time is called the coherence time, and depends on where a qubit lives. Quantum states are powerful for computing and exploring physics, but delicate when battling the environment. The key is to have a quantum state live longer than it takes to perform an operation or experiment. Physicists design complex containers that completely isolate quantum states from the surroundings. Read more to learn more about quantum coherence record holders.

September 10, 2013


Examples of optical cavities. 

June 3, 2013

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.

May 10, 2013

Rajibul Islam awarded Distinguished Dissertation Award

Rajibul Islam was recently awarded UMDs Distinguished Dissertation Award for his thesis work on quantum magnetism with ions in Chris Monroe's Trapped Ion Quantum Information group.

May 2, 2013

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.

March 7, 2013

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.

December 17, 2012

Nobel Work: Congratulations to David Wineland and Serge Haroche

The Joint Quantum Institute would like to again congratulate the 2012 Nobel Prize in physics recipients, David Wineland and Serge Haroche.