Z-Techie: Technology Info

Wednesday, July 31, 2013

Scientists Freeze Light for More than a Minute!

In what could prove to be a major breakthrough in quantum memory storage and information processing, German researchers have frozen the fastest thing in the universe: light. And they did so for a record-breaking one minute.

It sounds weird and it is. The reason for wanting to hold light in its place (aside from the sheer awesomeness of it) is to ensure that it retains its quantum coherence properties (i.e. its information state), thus making it possible to build light-based quantum memory. And the longer that light can be held, the better as far as computation is concerned. Accordingly, it could allow for more secure quantum communications over longer distances.

Monday, June 10, 2013

Big Brother IS watching! (Privacy not what some would expect.)

The UK's Guardian reports:

The National Security Agency has obtained direct access to the systems of Google, Facebook, Apple and other US internet giants, according to a top secret document obtained by the Guardian.

The NSA access is part of a previously undisclosed program called PRISM, which allows officials to collect material including search history, the content of emails, file transfers and live chats, the document says.

The Guardian has verified the authenticity of the document, a 41-slide PowerPoint presentation – classified as top secret with no distribution to foreign allies – which was apparently used to train intelligence operatives on the capabilities of the program. The document claims "collection directly from the servers" of major US service providers.

Although the presentation claims the program is run with the assistance of the companies, all those who responded to a Guardian request for comment on Thursday denied knowledge of any such program.

In a statement, Google said: "Google cares deeply about the security of our users' data. We disclose user data to government in accordance with the law, and we review all such requests carefully. From time to time, people allege that we have created a government 'back door' into our systems, but Google does not have a back door for the government to access private user data."

Several senior tech executives insisted that they had no knowledge of PRISM or of any similar scheme. They said they would never have been involved in such a program. "If they are doing this, they are doing it without our knowledge," one said.

An Apple spokesman said it had "never heard" of PRISM.

The NSA access was enabled by changes to US surveillance law introduced under President Bush and renewed under Obama in December 2012.