Tag Archives: quantum computing
Google may have taken first step towards quantum computing ‘supremacy’
‘Quantum microphone’ detects sound at the atomic level
Cloudflare wants to protect the internet from quantum computing
Microsoft, Alphabet team up to teach quantum computer programming
Holographic tech could be key to future quantum computers
World record setting experiment brings quantum computing a step closer to reality
Despite recent successes in the field, creating a quantum computer is really hard. For one thing quantum bits in a super positioned state (or qubits, the basic unit of data for quantum computing) have a hard time surviving at room temperature. Typically, these superposition states last for only a few seconds, but in a recent experiment at Simon Fraser University in Burnaby , researchers were able to keep a quantum system alive for a full 39 minutes.
"These lifetimes are at least ten times longer than those measured in previous experiments," explained Stephanie Simmons from the University of Oxford's Department of Materials. "Having such robust, as well as long-lived, qubits could prove very helpful for anyone trying to build a quantum computer." Even so, they aren't particularly active ones - all of the qubits in the experiment shared the same quantum state. To perform actual calculations (and thus build a functioning quantum computer), a system would need to put multiple qubtis in different quantum states. Sound complicated? It sure is, but it's a significant step forward to building the ultrafast computing platforms of tomorrow. Eager to learn more? Check out the official press release at the source link below.
[Image Credit: Stephanie Simmons, University of Oxford]
Source: University of Oxford
Real Lightsaber Ditches the Force for Photons and Vacuum Chambers
Alt-week 9.22.12: Quantum Scotch tape, moving walls and scientific beer
Alt-week peels back the covers on some of the more curious sci-tech stories from the last seven days.
Sometimes, here at alt.engadget.com, we're literally on the bleeding edge of technology. We get to explore concepts and ideas that are almost nebular in nature. Not this week though, where there's a distinct utilitarian aroma in the air. The glittery overcoat of future science is replaced by the rolled-up sleeves of good old-fashioned engineering. A bit of sticky tape, a proof of concept omnidirectional bike and a hardware matrix wall. After all that, you'll probably want a beer to wash it down with. Fortunately for you, it's all here. This is alt-week.
Continue reading Alt-week 9.22.12: Quantum Scotch tape, moving walls and scientific beer
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Alt-week 9.22.12: Quantum Scotch tape, moving walls and scientific beer originally appeared on Engadget on Sat, 22 Sep 2012 17:00:00 EDT. Please see our terms for use of feeds.
Permalink | | Email this | CommentsResearchers create working quantum bit in silicon, pave way for PCs of the future
If you've been paying attention, you know the quantum computing revolution is coming -- and so far the world has a mini quantum network, not to mention the $10,000 D-Wave One, to show for it. Researchers from the University of Melbourne and University College, London, have now developed the "first working quantum bit based on a single atom of silicon." By measuring and manipulating the magnetic orientation, or spin, of an electron bound to a phosphorus atom embedded in a silicon chip, the scientists were able to both read and write information, forming a qubit, the basic unit of data for quantum computing.
The team used a silicon transistor, which detects the electron's spin and captures its energy when the spin's direction is "up." Once the electron is in the transistor, scientists can change its spin state any way they choose, effectively "writing" information and giving them control of the quantum bit. The next step will be combing two qubits into a logic step, with the ultimate goal being a full-fledged quantum computer capable of crunching numbers, cracking encryption codes and modeling molecules that would put even supercomputers to shame. But, you know, baby steps.
Researchers create working quantum bit in silicon, pave way for PCs of the future originally appeared on Engadget on Fri, 21 Sep 2012 00:47:00 EDT. Please see our terms for use of feeds.
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