Practical quantum computing

[Bookworm]

June 19, 2013 — Researchers at the University of Sydney and Dartmouth College have developed a new way to design quantum memory, bringing quantum computers a step closer to reality. The results will appear June 19 in the journal Nature Communications.

Quantum computing may revolutionize information processing, by providing a means to solve problems too complex for traditional computers, with applications in code breaking, materials science and physics. But figuring out how to engineer such a machine, including vital subsystems like quantum memory, remains elusive.

In the worldwide drive to build a useful quantum computer, the simple-sounding task of effectively preserving quantum information in a quantum memory is a major challenge. The same physics that makes quantum computers potentially powerful also makes them likely to experience errors, even when quantum information is just being stored idly in memory. Keeping quantum information "alive" for long periods, while remaining accessible to the computer, is a key problem.

The Sydney-Dartmouth team's results demonstrate a path to what is considered a holy grail in the research community: storing quantum states with high fidelity for exceptionally long times, even hours according to their calculations. Today, most quantum states survive for tiny fractions of a second.

"Our new approach allows us to simultaneously achieve very low error rates and very long storage times," said co-senior author Dr. Michael J. Biercuk, director of the Quantum Control Laboratory in the University of Sydney's School of Physics and ARC Centre for Engineered Quantum Systems. "But our work also addresses a vital practical issue -- providing small access latencies, enabling on-demand retrieval with only a short time lag to extract stored information."

http://www.sciencedaily.com/releases/2013/...30619101555.htm

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[Bookworm]

I couldn't understand hardly anything of what that article was talking about, but it dealt with computers, so I posted it anyway.

Archived topic from Anythingforums, old topic ID:4041, old post ID:70182

[Red Squirrel]

Sounds like a really really fast computer that can calculate things and do stuff.

Archived topic from Anythingforums, old topic ID:4041, old post ID:70183

[Bookworm]

Sounds like a really really fast computer that can calculate things and do stuff.

Hmmm. That part I could figure out, but they also want access latencies provided with on-demand retrieval.

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