Quantum Computer Researchers Store "Sub Zero" Light Vacuum
March 7, 2008 9:31 PM
comment(s) - last by
A cavity containing a squeezed vacuum, developed at the California Institute of Tech in separate research. The University of Calgary and Tokyo Institute of Technology research uses a similar squeezed vaccum to store "less than nothing".
(Source: California Institute of Technology)
"Less than nothing" is the new zero
The world of quantum mechanics is filled with outlandish physical phenomena -- including everything from
to teleportation. Scientists have sought, in recent years, to
exploit these phenomena
to create the
ultimate computing machine
. Such a computer, which would put even Intel or
IBM's mightiest system
to shame, holds the promise to solve certain types of very difficult, but very important problems.
Scientists have made large advances including creating
cables for quantum computers
quantum encryption techniques
, and the development of the
first commercial quantum computer by D-Wave
, co-developed by NASA. Much of the research into quantum computing involves using photons to store and convey information inside advanced computer systems. However, light on an atomic scale behaves rather "spooky."
On a silicon transistor scale, for the most part "on" or 1 means charged, and "off" or 0 means no charge. On a quantum scale, on still means a charge, but "off" or absence of light still produces a lesser amount of atomic noise. In other words, even if a photon is turned off, the quantum computer will still read a small amount of noise, disrupting measurements.
Scientists, after puzzling over this complex problem have come up with an outlandish solution -- creating a "squeezed vacuum" a space which has less than nothing, less noise than a space with no light. Scientists managed to store and retrieve this "perfect dark" quantum zero. The special vacuum is created by a laser beam directed through special crystals. Squeezed vacuums have previously been created but not stored. Typical uses are gravity wave detection.
Teams of physicists at the University of Calgary and the Tokyo Institute of Technology
independently demonstrated that a squeezed vacuum can be stored
in a collection of rubidium atoms and retrieved when necessary. The work appears in today's edition of the physics journal
Physical Review Letters
. In it the researchers detail how they verified that the space remained squeezed when retrieved, compared to no light.
Alexander Lvovsky, professor in the Department of Physics and Astronomy, Canada Research Chair and leader of the University of Calgary's Quantum Information Technology research group, stated, "Memory for light has been a big challenge in physics for many years and I am very pleased we have been able to bring it one step further. It is important not only for quantum computers, but may also provide new ways to make unbreakable codes for transmitting sensitive information."
The team's research followed Harvard-Smithsonian scientists' 2001 work that slowed light to a stop and physicist Alexander Kuzmich of the Georgia Institute of Technology's work, which led to a successful 2006 effort to store and retrieve a photon. Kuzmich was enthusiastic about the new developments and said that the ability to squeeze space closer to an absolute zero in terms of noise promises to significantly aid in the development of quantum networks. He marveled at the work and said of the progress, "It's a real technical achievement."
Lvovsky’s team next hopes to develop storage methods for more complex forms of light, such as entangled light, which can lead to exotic new uses and improvements in quantum computing.
This article is over a month old, voting and posting comments is disabled
3/8/2008 2:04:39 PM
Well, I guess I'm at least glad to see Levovsky and his cronies are doing something with the lab space they stole from us...third floor Science B used to be all astrophysics until the dept discovered you could get more gov't grant money, easier, by saying you're working on QUANTUM COMPUTING!! (with a big booming echoing voice...seriously go record your voice on your pc, edit the bass level and add echo to it, get a huge speaker and stick it out your window and blast it full volume...you'll have a gov't grant and university office space in no time!)
Now I'm stuck in a windowless office on the 5'th floor, because all I'm doing is helping India with it first space telescope...big deal! :\
3/8/2008 7:25:36 PM
I was kind of thinking the same thing. If what they claim is true and can be empirically verified, then I could imagine many applications that boggle the mind. Quantum computing would only be one of them.
3/8/2008 7:42:29 PM
Zero Point Modules, baby! Oh wait.. too much Stargate for me.
3/9/2008 5:19:15 AM
Speaking of Stargate, and Star Trek, now we know what all those damn crystals do in all their computers.
And here I was thinking that colored glass is just cheap and easy for the props department to make!
That said, I still dont understand how taking Crystal A in Slot B and moving it to Slot C somehow magically repairs all major ship systems.
"If you can find a PS3 anywhere in North America that's been on shelves for more than five minutes, I'll give you 1,200 bucks for it." -- SCEA President Jack Tretton
NIST Creates Perpetual Motion ... But Only for 10 Seconds
December 3, 2007, 11:09 AM
Researchers Develop Quantum Device to Control Single Electron Spin
October 17, 2007, 1:48 PM
NIST Demonstrates First Quantum Computing Cable
October 3, 2007, 4:21 AM
Another Step Towards Unbreakable Quantum Encryption
June 13, 2007, 5:29 AM
NEC Takes Another Step Towards Quantum Computing
May 7, 2007, 6:39 PM
Lenovo to Complete $2.1B Acquisition of IBM's x86 Server Operations on October 1
September 29, 2014, 3:19 PM
ZOTAC Announces Diminutive ZBOX PI320 pico
August 27, 2014, 9:00 AM
Quick Note: QNAP Announces $129 QGenie 7-in-1 NAS for Mobile Users
July 14, 2014, 9:32 AM
Apple Launches 21.5” iMac with 1.4GHz Core i5 Processor Priced at $1,099
June 18, 2014, 8:07 AM
Lowe's "Holoroom" Brings Holodeck, Home Improvement Dreams Closer to Reality
June 13, 2014, 9:06 AM
Intel to Broaden Market for Fanless Tablets, Ultrabooks with 14nm Intel Core M
June 3, 2014, 10:42 AM
Most Popular Articles
New AT&T Mobile Share Value "Double Data" Promotion Lasts Through October
September 28, 2014, 8:32 AM
Update: Apple Releases iOS 8.0.2 Update to Make Up for Botched 8.0.1 Release
September 25, 2014, 8:19 PM
Appalling Negligence: Decade-Old Windows XPe Holes Led to Home Depot Hack
September 8, 2014, 8:58 PM
TiVo Mega Features 24TB of Storage, Can Record Three Years* Worth of TV Content
September 8, 2014, 8:45 AM
FBI Outraged That Apple, Google are Adopting Digital "Locks" to Protect Users
September 26, 2014, 1:00 PM
Latest Blog Posts
The Surface Mini That Was Never Released Gets "Hands On" Treatment
Sep 26, 2014, 8:22 AM
ISIS Imposes Ban on Teaching Evolution in Iraq
Sep 17, 2014, 5:22 PM
Space Terrorism is a Looming Threat For the United States
Apr 23, 2014, 7:47 PM
Facebook Aims to Provide Internet to "Every Person in the World" with Drones, Satellites
Apr 1, 2014, 10:20 AM
Retail Mobile Sites Experience Outages in Light of Simplexity's Bankruptcy
Mar 14, 2014, 8:48 AM
More Blog Posts
Copyright 2014 DailyTech LLC. -
Terms, Conditions & Privacy Information