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
3/9/2008 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.
"My sex life is pretty good" -- Steve Jobs' random musings during the 2010 D8 conference
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
"Prepare to be Punished": Microsoft is Killing OneDrive With Cuts, Blames Users
November 3, 2015, 8:23 PM
Apple's New "Magic" Peripheral Line Packs High Tech, High Prices
October 13, 2015, 9:39 PM
Samsung Adds 2 TB 850 EVO, PRO SSDs for $800, $1000
July 7, 2015, 4:23 PM
Seagate Senior Researcher: Heat Can Kill Data on Stored SSDs
May 13, 2015, 2:49 PM
How to Recover Most Apps After Your NVIDIA Driver Crashes in Windows 10
March 30, 2015, 12:54 PM
Tinkerer Gets Old School Mac Plus Running on the Modern Web
March 24, 2015, 6:41 PM
Latest Blog Posts
Sceptre Airs 27", 120 Hz. 1080p Monitor/HDTV w/ 5 ms Response Time for $220
Dec 3, 2014, 10:32 PM
Costco Gives Employees Thanksgiving Off; Wal-Mart Leads "Black Thursday" Charge
Oct 29, 2014, 9:57 PM
"Bear Selfies" Fad Could Turn Deadly, Warn Nevada Wildlife Officials
Oct 28, 2014, 12:00 PM
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
More Blog Posts
Copyright 2016 DailyTech LLC. -
Terms, Conditions & Privacy Information