The Quaalude Board - Physicists establish 'spooky' quantum communicatio

« Physicists establish 'spooky' quantum communicatio »

Welcome Guest. Please Login or Register.
Sept 3, 2010, 12:51am

The Quaalude Board The Quaalude Board
Click here to join qaaludecharlie

Click to join qaaludecharlie

The Quaalude Board :: Board News :: Science :: Physicists establish 'spooky' quantum communicatio

Author Topic: Physicists establish 'spooky' quantum communicatio (Read 2,845 times)
۞Quaalude™۞
Administrator

Quaalude Charlie
member is offline

[avatar]

Be your own Reason !

Joined: Feb 2007
Gender: Male
Posts: 5,287
Location: Midwest
Karma: 90
Physicists establish 'spooky' quantum communicatio
« Thread Started on Sept 6, 2007, 2:25am »
Physicists at the University of Michigan have coaxed two separate atoms to communicate with a sort of quantum intuition that Albert Einstein called "spooky." In doing so, the researchers have made an advance toward super-fast quantum computing. [image] The research could also be a building block for a quantum internet. They used light to establish what's called "entanglement" between two atoms, which were trapped a meter apart in separate enclosures (think of entangling like controlling the outcome of one coin flip with the outcome of a separate coin flip). [image]

A paper on the findings appears in the Sept. 6 edition of the journal Nature.

"This linkage between remote atoms could be the fundamental piece of a radically new quantum computer architecture," said Professor Christopher Monroe, the principal investigator who did this research while at U-M, but is now at the University of Maryland. "Now that the technique has been demonstrated, it should be possible to scale it up to networks of many interconnected components that will eventually be necessary for quantum information processing."

David Moehring, the lead author of the paper who did this research as a U-M graduate student, says the most important feature of this experiment is the distance between the two atoms. Moehring graduated and now has a position at the Max-Planck-Institute for Quantum Optics in Germany.

"The separation of the qubits in our entangled state is the most important feature," Moehring said. "Localized entanglement has been performed in ion trap qubits in the past, but if one desires to build a scalable quantum computer network (or a quantum internet), the creation of entanglement schemes between remotely entangled qubit memories is necessary." In this experiment, the researchers used two atoms to function as qubits, or quantum bits, storing a piece of information in their electron configuration. They then excited each atom, inducing electrons to fall into a lower energy state and emit one photon, or one particle of light, in the process.

The atoms, which were actually ions of the rare-earth element ytterbium, are capable of emitting two different types of photon of different wavelengths. The type of photon released by each atom indicates the particular state of the atom. Because of this, each photon was entangled with its atom.

By manipulating the photons emitted from each of the two atoms and guiding them to interact along a fiber optic thread, the researchers were able to detect the resulting photon clicks and entangle the atoms. Monroe says the fiber optic thread was necessary to establish entanglement of the atoms, but then the fiber could be severed and the two atoms would remain entangled, even if one were "(carefully) taken to Jupiter."

Each qubit's information is like a single bit of information in a conventional computer, which is represented as a 0 or a 1. Things get weird on the quantum scale, though, and a qubit can be either a 0, a 1, or both at the same time, Monroe says. Scientists call this phenomenon "superposition." Even weirder, scientists can't directly observe superposition, because the act of measuring the qubit affects it and forces it to become either a 0 or a 1.

Entangled particles can default to the same position once measured, for example always ending in 0,0 or 1,1.

"When entangled objects are measured, they always result in some sort of correlation, like always getting two coins to come up the same, even though they may be very far apart," Monroe said. "Einstein called this 'spooky action-at-a-distance,' and it was the basis for his nonbelief in quantum mechanics. But entanglement exists, and although very difficult to control, it is actually the basis for quantum computers." [image]

Scientists could set the position of one qubit and know that its entangled mate will follow suit.

Entanglement provides extra wiring between quantum circuits, Monroe says. And it allows quantum computers to perform tasks impossible with conventional computers. Quantum computers could transmit provably secure encrypted data, for example. And they could factor numbers incredibly faster than today's machines, making most current encryption technology obsolete (most encryption today is based on the inability for man or machine to factor large numbers efficiently). [image]

Source: University of Michigan. 8-) QC

http://physorg.com/news108217803.html

« Last Edit: Sept 6, 2007, 2:32am by ۞Quaalude™۞ » Link to Post - Back to Top   IP: Logged
۩Quaaludeđ۩
۩Charlie۩

[image]

[image]
AF
Guest
Re: Physicists establish 'spooky' quantum communic
« Reply #1 on Jan 17, 2008, 9:43pm »
The Quaalude Board - Home
Quaaludes Board [basis ] This is where we Have our main Topics ... Contest Board The Quaalude Board contests will be held here
quaalude.proboards105.com/ --

The Repository
More results from proboards105.com »
The Quaalude Board - Physicists establish 'spooky' quantum ...
The Quaalude Board « Physicists establish 'spooky' quantum communicatio ». Welcome Guest. Please Login or Register. Mar 11, 2008, 12:10pm ...
quaalude.proboards105.com/index.cgi?board=science&action=display&thread=1405 - 75k - Cached - Similar pages
The Quaalude Board http://quaalude.proboards105.com - The ...
The Quaalude Board http://quaalude.proboards105.com Post Your Business Opportunities Here.
www.thefreeadforum.com/vbull/showthread.php?t=58147 - 52k - Cached - Similar pages even AF

[image]
« Last Edit: Feb 10, 2010, 2:16pm by ۞Quaalude™۞ » Link to Post - Back to Top   IP: Logged
۞Quaalude™۞
Administrator

Quaalude Charlie
member is offline

[avatar]

Be your own Reason !

Joined: Feb 2007
Gender: Male
Posts: 5,287
Location: Midwest
Karma: 90
Re: Physicists establish 'spooky' quantum communic
« Reply #2 on Jan 30, 2008, 11:01pm »
I Guess i,m Starting to Get This AF QC

It was right in front of me all the Time .
« Last Edit: Feb 6, 2010, 2:07pm by ۞Quaalude™۞ » Link to Post - Back to Top   IP: Logged
۩Quaaludeđ۩
۩Charlie۩

[image]

[image]
nakquda
New Member

member is offline

[avatar]

God

Joined: Mar 2008
Gender: Male
Posts: 7
Location: Lafayette, LA
Karma: 3
Re: Physicists establish 'spooky' quantum communic
« Reply #3 on Mar 7, 2008, 9:45am »
Wow, that is awesome eh! I did not hear of this!
Link to Post - Back to Top   IP: Logged
۞Quaalude™۞
Administrator

Quaalude Charlie
member is offline

[avatar]

Be your own Reason !

Joined: Feb 2007
Gender: Male
Posts: 5,287
Location: Midwest
Karma: 90
Re: Physicists establish 'spooky' quantum communic
« Reply #4 on Feb 20, 2010, 10:34am »
'spooky' quantum computing is the future nakquda 8-) QC

Link to Post - Back to Top   IP: Logged
۩Quaaludeđ۩
۩Charlie۩

[image]

[image]

Welcome to The Quaalude Board
CBOX
Cbox Rules No cursing! Keep your language clean, please. No spamming! Don't advertise in the cbox, but linking your name [as in putting a link in the "e-mail/url" field is fine]. Don't flame! Don't trash talk other members. Guests may ask questions and speak in the cbox. You may use any name you wish in the cbox, as long as it's your own and not some other member's. ~Violating the cbox rules will get your IP address banned from it~		My links Quaalude Chat Room Quaalude ToolBar MySpace Layouts 4 5