Diamonds demo quantum entanglement on a macro scale

Diamonds demo quantum entanglement on a macro scale

Summary: Researchers working in the UK’s Clarendon Laboratory at Oxford have demonstrated long range quantum entanglement in two synthetic diamonds, at room temperature.Those last words are the really important ones, because quantum entanglement is a very fragile thing, and generally needs a super chilly environment to be stable.

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TOPICS: Graphene
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Researchers working in the UK’s Clarendon Laboratory at Oxford have demonstrated long range quantum entanglement in two synthetic diamonds, at room temperature.

Those last words are the really important ones, because quantum entanglement is a very fragile thing, and generally needs a super chilly environment to be stable. Generally it has only been demonstrated on a very small scale, too, and using single atoms in gaseous clouds.

Quantum entanglement is one of the weirder properties of the very small, quantum scale world. In effect, it means that events at one location can affect events at another. Scaled up (which it doesn’t – this is a metaphor) it would be as if the roulette wheels in a casino determined each others outcomes. If table one shows red, the table two will show black, for instance.

It also lies at the heart of the nascent science of quantum computing. Entangled particles would theoretically allow instant communication between two locations, and can be exploited in cryptography as well.

This time, the researchers used two solid pieces of diamond, separated by 15cm, and showed that the manipulating the vibrations of one crystal affected the vibrations in the other, even though it had not been touched.

"We used short pulse lasers with pulse durations of around 100 femtoseconds (a quadrillionth of a second). A femtosecond is to a second as a nickel is to the debt of the federal government generally speaking," said Ian Walmsey, professor of experimental physics at Oxford's Clarendon Laboratory.

The light pulses affected the phonons in the crystal, which since diamond is transparent to visible light was easily measurable. The phonon modes in the other diamond responded as well, even though it had not been stimulated with pulsed light, demonstrating entangelment.

The work is published in Science.

Topic: Graphene

Lucy Sherriff

About Lucy Sherriff

Lucy Sherriff is a journalist, science geek and general liker of all things techie and clever. In a previous life she put her physics degree to moderately good use by writing about science for that other tech website, The Register. After a bit of a break, it seemed like a good time to start blogging about weird quantum stuff for ZDNet. And so here we are.

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  • MACRO ENTANGLEMENT & GRAVITY

    QUANTUM CREATIVITY is a project focused on quantum Entanglement . The development of quantum physics starting from 1927 is surely one of the most remarkable achievements of mankind. More recently the Quantum Entanglement propose fundamentally new approach to describe anew physics connecting micro and macroscopic scales. At the heart of quantum entanglement is the idea of Schroedinger (1935) of quantum superposition of objects because they may be dislocated in two places at once (or more generally a new geometrical configurations of space/time). For Instance two single states A and B of different physical systems can be associated into a physical configurations, (A + B) that is also an allowed . ( A + B )then represents a new space-time field where each single object has no definite location as the electrons in a metallic wire. If a measurement of the location single objects is performed, no definite prediction for the result is possible; we can predict the quantum probability of a possible diffuse location. Intimately related to the idea of quantum superposition known as entanglement is the notion of quantum gravity.The mechanical approach to understand gravity as a electromagnetiv quantized force (Gravitons) has no experimental success till today; so we need to avoid to think that exist a mechanical force of gravity. So that for finding a good theory of quantum gravity in relation to the Quantum Entangled effect will be essential if we want to fully understand the workings of nature.The Quantum Creativity would change the ordinary quantum mechanical approach based on the search of Gravitons , and therefore the project would open a big change of the obsolete mechanical science. Looking to a better understanding of Quantum Gravity it esasy to suppose strong entangled-correlations happen between quantu-partiles have interacted in the past near to the big-bang. So that it is plausible to suppose that entangled particle states have verified in that so oldest times and that the‘nonlocal’ nature of quantum entangled effect remain stable to connect simulaneously, through a gravity fluctuanting entangled field, the entire Universe. This not verifiable hyphothesis consider acceeptable the idea that in the critical condition near to big bang, Quantum Entanglement my be the predominant quantum physics phenomena in wich quantum states of Energy and Matter cannot be described indipendently during the process that the forming objects they become separated . In that hypothesis the Gravity Universal entangled energy field born in that critical conditions so that remain at infinitum to correlate the many body system of the Universe.
    ,The central suggestion of sugn Quantum Gravity based on Quantum Entanglement effect in primordial times is based on the quantization of the space time geometry produced by the quantum entanglement as you can see in:http://www.edscuola.it/.../lre/triadic_quantum%20_energy.pdf;
    Within this approach , Egocreanet argue that a triadic conceptual structure of energy (inluding the gravity ) offers an alternative perspective under which the information energy may generating a role of cultural evolution that can permit to a better understand of science into a new creative approach of future knowledge society. Paolo Manzelli 2014-10-03 ;https://www.facebook.com/groups/1557903417770268/?fref=ts
    paolo manzelli