The weird quantum world: Entanglement – 'spooky action at a distance' – causes the properties of two atoms to be linked even when they have no contact with one another.
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SYDNEY: Quantum information has been successfully teleported between two single atoms a metre apart – a significant step towards long distance quantum communication and quantum computing, researchers say.
Quantum information is information about the physical state of a particle: its energy or spin, for example. Physicists in the U.S. have now managed to faithfully transfer this information between two atoms separated by a short distance, according to their study published today in the journal Science.
Quantum networks
"The teleportation of quantum information in this way could form the basis of a new type of quantum internet that could outperform any conventional type of classical network for certain tasks," said Christopher Monroe, study author with the Joint Quantum Institute at the University of Maryland in College Park.
Before now, quantum teleportation had been achieved over very long distances with groups of atoms or with photons (see, Quantum communication breaks distance record), but this is the first time it has demonstrated with single atoms.
Only quantum teleportation between single atoms is a feasible way to hold and manage quantum information over long distances. "Photons are ideal for transferring information fast over long distances, whereas atoms offer a valuable medium for long-lived quantum memory," said Monroe.
In the study, the researchers put two ytterbium ions (A and B) in separate vacuum traps separated by one metre. Ion A was irradiated by microwaves, putting it into an unknown quantum state – this state was the information to be transported.
Spooky action
The ions were excited by a laser pulse, which caused them to emit a single photon and returned to their initial state. The photons were measured in such a way that it was impossible to tell which ion emitted which photon. In the curious world of quantum mechanics, this projects an 'entangled' state onto the ions.
Entanglement is a bizarre phenomenon. It is a relationship between two particles such that an action undertaken on one particle – such as a measurement of its quantum state – affects the other particle, even if the two particles are far apart.
This is sometimes called 'spooky action at a distance' because there is nothing exchanged between the two particles, yet one can have an effect on the other.
entanglement by dark-information
In my study, published on my website www.darkfieldnavigator.com, I reveal that entanglement is produced by a duonistical state of dark energy and dark matter. In this so called 'darkfield', entanglement is defined by 'dark-information' with speeds far beyond the lightspeed. There is a scientifical team in the university of Geneva (Nicolas Gisin and colleages), who measured a statistical possibility entanglementspeeds of 10 to 10000 times the lightspeed. According to my darkfieldtheory those speeds are located in a layer below the quantummechanics. According to my darkfieldtheory it means that we live at the edge of the event-horizons of an enormous amount of Planck holes, which evapourate in a flash. The 'dark-information' is released by the hardly non-existing Planck holes. So one can consider the universe as an enormous amount of hardly non-existing Planck holes producing 'dark-information' to recalculate the quantumdynamics. My darkfieldtheory is new physics, revolutionary and theoretical prepared for peer-review in an interactive way by the internet. This is because the institutional physics-reviews neglect progress of clear new ideas.
I recommend you to write an article for me on 'cosmos'-web about my darkfieldtheory. Please inform me, if you do so.
Kind Regards,
Dan Visser (ingE, cosmologists and artpainter), Almere, Netherlands.