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Always-on Exchange-ONly (AEON) spin-based qubits

July 20th, 2016  |  by  |  published in Featured, Quantum Computing, Research

Always-on Exchange-ONly (AEON) spin-based qubits

We introduce an always-on, exchange-only qubit made up of three localized semiconductor spins that offers a true “sweet spot” to fluctuations of the quantum dot energy levels.

Semiconductor-inspired superconducting quantum computing

March 19th, 2016  |  by  |  published in Featured, Quantum Computing, Research

Semiconductor-inspired superconducting quantum computing

Superconducting circuits offer tremendous design flexibility in the quantum regime culminating most recently in the demonstration of few qubit systems supposedly approaching the threshold for fault-tolerant quantum information processing. Competition in the solid-state comes from semiconductor qubits, where nature has bestowed some very useful properties which can be utilized for spin qubit based quantum computing. […]

How to make superconducting circuits out of a semiconductor

July 4th, 2014  |  by  |  published in Featured, Quantum Computing, Research

How to make superconducting circuits out of a semiconductor

Superconducting circuits are exceptionally flexible, enabling many different devices from sensors to quantum computers. Separately, epitaxial semiconductor devices such as spin qubits in silicon offer more limited device variation but extraordinary quantum properties for a solid-state system. It might be possible to merge the two approaches, making single-crystal superconducting devices out of a semiconductor by […]

On-chip cavity quantum phonodynamics and acceptor qubits in silicon

September 8th, 2013  |  by  |  published in All, Featured, Highlights, Nanotechnology, Phonitons, Quantum Computing, Research

On-chip cavity quantum phonodynamics and acceptor qubits in silicon

We show how long-lived and tunable acceptor impurity states in silicon nanomechanical cavities can play the role of a matter non-linearity for coherent phonons just as, e.g., the Josephson qubit plays in circuit-QED.

Introducing the phoniton: A sound-based analogue of cavity-QED, a tool for controlling sound at the quantum level

November 28th, 2011  |  by  |  published in All, Blog, Featured, Highlights, Nanotechnology, Papers, Phonitons, Research

Introducing the phoniton: A sound-based analogue of cavity-QED, a tool for controlling sound at the quantum level

This work explores the possibility of a new, man-made quantum object: a hybridization of a localized, long-lived phonon (a quantum of sound) and a matter excitation. That this is possible is not obvious.

Physics of silicon quantum dot qubits

September 27th, 2010  |  by  |  published in All, Conferences, Featured, Highlights, Quantum Computing

Physics of silicon quantum dot qubits

The spin of an electron in silicon may act as an information carrier in future information technologies, from quantum computers to spintronics. For quantum information applications, the spin of cold localized electrons in silicon can make a good quantum memory due to the purifiability of the spin environment (a spin-0 nuclear isotope is available) and […]

Quantum Information Technology and Industry

February 7th, 2008  |  by  |  published in All, Essays, Featured, Technology and Society

Quantum Information Technology and Industry

A new era of physics careers in industry is about to begin, based on the quantum information science/technology (QIS/T) revolution. Whether this statement is true, or can be made to be true, is something we should consider. From my viewpoint, the chances are improving, but there are still roadblocks.

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Quantum phase transitions of light

November 1st, 2007  |  by  |  published in All, Featured, Highlights, Solid Light

Quantum phase transitions of light

As physics and engineering extend their reach to the control of single excitations of nature, we gain the ability to explore and even design the interaction of matter and energy in fundamentally new ways. One of the most interesting opportunities this presents is controllable interactions between many quantum particles — such as electrons — which is traditionally the realm of condensed matter physics. The questions we asked ourselves were these: Can we also do this with light? Can it be useful? We show that the answer is YES!

Tahan Research

http://research.tahan.com/

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