New HTC Windows Phone 8X - 8GB - Blue Unlocked GSM AT&T Smartphone
$329.00End Date: Monday Jun-17-2013 16:02:21 PDTBuy It Now for only: $329.00Buy It Now | Add to watch list
HTC Windows Phone 8x At&t 8gb
$166.50 (17 Bids)End Date: Sunday May-19-2013 14:55:04 PDTBid now | Add to watch list
New In Retail Box - AT&T Samsung Focus S Windows Smartphone
$101.00 (11 Bids)End Date: Sunday May-19-2013 14:58:39 PDTBid now | Add to watch list
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 X
Related Posts: New HTC Windows Phone 8X - 8GB - Blue Unlocked GSM AT&T Smartphone
$329.00End Date: Monday Jun-17-2013 16:02:21 PDTBuy It Now for only: $329.00Buy It Now | Add to watch list
HTC Windows Phone 8x At&t 8gb
$166.50 (17 Bids)End Date: Sunday May-19-2013 14:55:04 PDTBid now | Add to watch list
New In Retail Box - AT&T Samsung Focus S Windows Smartphone
$101.00 (11 Bids)End Date: Sunday May-19-2013 14:58:39 PDTBid now | Add to watch list
New HTC Windows Phone 8X - 8GB - Blue Unlocked GSM AT&T Smartphone
$329.00End Date: Monday Jun-17-2013 16:02:21 PDTBuy It Now for only: $329.00Buy It Now | Add to watch list
HTC Windows Phone 8x At&t 8gb
$166.50 (17 Bids)End Date: Sunday May-19-2013 14:55:04 PDTBid now | Add to watch list
New In Retail Box - AT&T Samsung Focus S Windows Smartphone
$101.00 (11 Bids)End Date: Sunday May-19-2013 14:58:39 PDTBid now | Add to watch list
1pcs Charm Watch Bracelet Fits European Bead 20cm WP7
$3.58 (3 Bids)End Date: Monday May-20-2013 19:18:28 PDTBid now | Add to watch list
Bell & Howell Splash WP7 12MP Waterproof Camera - Blue
$45.20End Date: Sunday Jun-16-2013 12:51:35 PDTBuy It Now for only: $45.20Buy It Now | Add to watch list
New Black 3500mAh extended battery for HTC HD7 HD 7 WP7
$7.02End Date: Thursday May-30-2013 23:52:16 PDTBuy It Now for only: $7.02Buy It Now | Add to watch list
$329.00End Date: Monday Jun-17-2013 16:02:21 PDTBuy It Now for only: $329.00Buy It Now | Add to watch list
New In Retail Box - AT&T Samsung Focus S Windows Smartphone
$101.00 (11 Bids)End Date: Sunday May-19-2013 14:58:39 PDTBid now | Add to watch list
Related Posts:
New HTC Windows Phone 8X - 8GB - Blue Unlocked GSM AT&T Smartphone
$329.00End Date: Monday Jun-17-2013 16:02:21 PDTBuy It Now for only: $329.00Buy It Now | Add to watch list
HTC Windows Phone 8x At&t 8gb
$166.50 (17 Bids)End Date: Sunday May-19-2013 14:55:04 PDTBid now | Add to watch list
New In Retail Box - AT&T Samsung Focus S Windows Smartphone
$101.00 (11 Bids)End Date: Sunday May-19-2013 14:58:39 PDTBid now | Add to watch list
New HTC Windows Phone 8X - 8GB - Blue Unlocked GSM AT&T Smartphone
$329.00End Date: Monday Jun-17-2013 16:02:21 PDTBuy It Now for only: $329.00Buy It Now | Add to watch list
HTC Windows Phone 8x At&t 8gb
$166.50 (17 Bids)End Date: Sunday May-19-2013 14:55:04 PDTBid now | Add to watch list
New In Retail Box - AT&T Samsung Focus S Windows Smartphone
$101.00 (11 Bids)End Date: Sunday May-19-2013 14:58:39 PDTBid now | Add to watch list
A team of researchers at the Photonic Network Research Institute of Japan’s National Institute of Information and Communications Technology (NICT) has developed a new light source technology that might pave the way to some pretty spectacular applications in the future.
The core piece of the technology are “high-quality” quantum dots, tiny nano particles, that boast higher stability and optical frequency than those created the conventional way.
By using the so-called “Sandwiched sub-nano separator structure”, NICT says their quantum dots can be utilized in optical frequency bands that are about 70 Thz wide, which is about seven times wider than the 10Thz of conventional frequency bands currently offer.
NICT also says that because this new wavelength band can permeate human skin, their technology could also be used in bio-imaging, for example to shoot high-resolution photos of new molecules in cells.
NICT explains their light source technology:
Usually when you fabricate quantum dots, you grow crystalline quantum dot particles, in nanometer size, on the semiconductor surface. But this time, we’ve formed a very thin layer, less than one nanometer thick, between the surface and the dots. By adding just this nanometer layer, we’ve be able to form high-quality quantum dots, without aggregation structures, at very high density.
This video, shot by Diginfo TV in Tokyo, provides more insight (in English):
Afraid of the cloud? You’re not alone, as rising concerns surrounding the security of distributed computing have led University of Vienna researchers to seek out quantum mechanics as a privacy fix. The team’s findings, soon to be published in the journal Science, prove that an end user’s data can remain encrypted throughout its journey to and from remote servers, essentially rendering the quantum computer’s calculations as “blind.” So, how exactly does this evasive entanglement work? Qubits (or quantum bits) containing the pertinent information are transmitted to a central facility where they’re processed according to a specific set of measurements, leaving the resultant computations readable only by the original user. Not obtuse enough for you? Then check out the source below for a more detailed walkthrough.
University of Vienna researchers quantum leap into the cloud, ensure privacy for distributed computing originally appeared on Engadget on Sat, 21 Jan 2012 01:33:00 EDT. Please see our terms for use of feeds.
Permalink 
EurekAlert! | 
University of Vienna (Translated) | Email this | Comments
