Quantum computing has teased us with its potential for some time, but we won’t be seeing qubits in our laptops anytime soon. However, science has also sought to leverage quantum physics in cryptography, and a recent breakthrough will allow for quantum encryption over fiber optic cables already in use. Researchers from Toshiba and Cambridge University discovered that they could transmit and receive encryption keys using pulses of quantum light and a specialized photodetector.
The trick was to build a detector with a gate capable of both sensing a single photon and opening for just one tenth of one billionth of a second at the precise time that the photon arrives. Knowing the timing of the photon’s arrival with such precision allows the quantum light to be captured and filtered out from other light pulses carrying regular data in the cable. Why all the effort to use quantum light? Well, if any quantum photon carrying an encryption key is intercepted during transmission, it’s permanently changed. This, in turn, alerts those intended to receive the info that the encryption key may have been compromised.
Previously, quantum encryption keys could be exchanged, but only if sent using a dedicated fiber line, which isn’t a cost-effective solution. This new method allows keys to be sent via existing lines already in operation transmitting data, so no dedicated fiber need be installed. In testing, simultaneous 1 Mbps quantum key data rates and 1 Gbps regular data rates were achieved, and one researcher told BBC News that the technology is “not too far away” from being used to secure financial networks. For now, the new quantum key distribution method remains in the lab, but you can read all about it at the source below.
Via: BBC News
Source: Physical Review XRelated Posts:
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The latest fan-submitted timepiece from Tokyoflash bundles together 10 distinct lines to tell the time. The Kisai Online’s built-in accelerometer means as you rotate the watch to view, an otherwise cryptic mess of lines transforms into something (a little) more readable. Toting the watchmaker’s typical always-on display, the watch can be picked up in a choice of black and silver-finish stainless steel bodies, alongside three LCD colors; natural, blue and red. The limited edition design is available direct from the source link below — but be ready to part with $ 170 for the privilege.
Filed under: Wearables
As the London Olympics creep closer, BBC is unveiling more of the technology it plans to use to bring the Games home to UK viewers. In the last few days it’s shown off both the new live video player shown above, as well as a new Facebook app in beta for BBC Sport. The interactive live video player is built to deliver up to 24 HD streams during the Olympics, along with alerts for key events and extra information and stats. It will work on computers and tablets that support Flash, and for those notable ones that don’t, there’s a stripped down version for mobiles and iPads that loses the extra interactivity. The BBC Sport Facebook app will also be able to stream the Games, but also let you see if any of your friends are watching the same stream or what sport is the most popular. Finally, the Beeb has lined up what it’s calling the “Summer of 3D” with a lineup that includes Planet of the Dinosaur, Last Night of the Proms, Wimbledon and the Olympics. There’s a lot going on, hit the source links or check the press releases after the break for the highlights.
While there’s already plenty of excitement around other quad-core Android phones, LG will join the party soon when its Optimus 4X HD launches in a few European countries next month. Germany, Sweden, Great Britain, Italy and Poland are all on deck in June, where this latest Optimus variant will bring a 4.7-inch 720p HD IPS LCD, Tegra 3 CPU (benchmarked and seen in white here) and 2,150mAh battery coupled with Android 4.0 Ice Cream Sandwich. On the software front, LG is touting its ability to take and share quick notes as well as “Media Flex” video playback. We got our hands all over this one during MWC 2012 a few months ago so until it drops in your neck of the woods, check out our gallery and video for a closer look.
Gallery: LG Optimus 4X hands-on
Continue reading LG lines up Optimus 4X HD for launch in Germany, Sweden, Great Britain, Italy and Poland
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2 DOF Slope Pan & Tilt Kit + 2 Servos Round Horn Mount Robot Arduino - SEE VIDEO $11.99 (0 Bids)End Date: Thursday May-23-2013 5:03:06 PDTBid now | Add to watch list NEW VEX Robotics Design System Transmitter and Receiver Kit - with torn box. $39.99End Date: Sunday Jun-2-2013 5:38:52 PDTBuy It Now for only: $39.99Buy It Now | Add to watch list WIRELESS RC SPIDER ROBOT #18144 ACADEMY SCIENCE MODEL KIT w/IR REMOTE CONTROLLER $47.00End Date: Friday May-24-2013 14:41:20 PDTBuy It Now for only: $47.00Buy It Now | Add to watch listRelated Posts:
Continue reading Corsair adds 90GB SSDs to Force 3 / GT lines
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Why no lines for the Motorola Xoom? Take 2 Readers offered some cogent arguments for and against the Xoom tablet. Google and Motorola face an array of obstacles in cracking the tablet market, as readers astutely point out. Originally posted at Nanotech – The Circuits Blog Read more on CNET
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