Team Constructs Silicon 2-qubit Gate, Enabling Construction of Quantum Computers (phys.org)

monkeyzoo writes: A team at the University of New South Wales (UNSW) in Sydney has made a crucial advance in quantum computing. Their advance, appearing in the journal Nature (abstract), demonstrated a two-qubit logic gate — the central building block of a quantum computer — and, significantly, did it in silicon. This makes the building of a quantum computer much more feasible, since it is based on the same manufacturing technology as today's computer industry. Until now, it had not been possible to make two quantum bits 'talk' to each other — and thereby create a logic gate — using silicon. But the UNSW team — working with Professor Kohei M. Itoh of Japan's Keio University — has done just that for the first time. The result means that all of the physical building blocks for a silicon-based quantum computer have now been successfully constructed, allowing engineers to finally begin the task of designing and building a functioning quantum computer.

Comments

Link to paper at arxiv.org

[Anonymous Coward]

Hi everyone,

If you don't have a subscription to Nature, you download a copy of the preprint from arxiv.org at this link.

http://arxiv.org/pdf/1411.5760.pdf

Enjoy! This is great Science. Even without the really cool Quantum effects, this technology has potentially far higher logic densities than CMOS.