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Research News

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.

February 5, 2013 | Research News

Using Single Quantum Dots to Probe Nanowires

Modern telecommunications happens because of fast electrons and fast photons. Can it get better? Can Moore’s law be sustained? Can the compactness of electronics be combined with the speed of photonics? Well, one such hybrid approach is being explored at the Joint Quantum Institute.

January 29, 2013 | PFC | Research News

An Ideal Material

An old material gets a new name, and with it, topological insulators have another chance to shine. Samarium hexaboride (SmB6) has been around since the late 1960s--but understanding its low temperature behavior has remained a mystery until recently. Experimentalists* have recently confirmed that this material is the first true 3D topological insulator—as originally predicted by JQI/CMTC theorists in 2010.

January 8, 2013 | Research News

Rudimentary Atom Capacitor

Over the past decade or so a new information modality, atomtronics, has been under development, one employing not electrons but neutral atoms as the vehicle for information. The latest chapter in this development is the demonstration of a rudimentary atomtronic analog of capacitance.

A New Phase in Reading Photons
January 6, 2013 | Research News

A New Phase in Reading Photons

A JQI photodetector beats the quantum limit by a factor of four.

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