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New form of LED brings quantum computing closer
BOFFINS at Toshiba and the University of Cambridge have hit upon another breakthrough in quantum computing, this time involving a new form of LED.
Following the announcement of work done in encryption, this time they have found a way of creating entangled light using a voltage driven power source, rather than producing it using an intense laser beam on crystals as previously.
Entangled light is key for a quantum computer, a machine with massive processing power. It can also be applied to secure communication systems based on quantum cryptography and increase the storage capacity of optical disks.
The new source of entangled light is based upon similar semiconductor LED tech used in computer indicator lamps and household lighting.
It differs to conventional LEDs in that it contains a nanometer-scale region of semiconductor, called a quantum dot, that converts electrical current into entangled light.
Dr Mark Stevenson, senior research scientist on the project explained, "For successful operation it was essential to optimise the thickness of the semiconductor material surrounding the quantum dot to control the supply of current to the dot."
He added, "In addition the properties of the dot itself had to be carefully tailored to produce entangled emission."
It is suitable for mass manufacture, meaning that multiple compact and cheap entangled light emitters can be produced.
Dr Andrew Shields at Toshiba Research Europe said, "The discovery is significant because it will allow electrical addressing of many entangled light emitters on a single chip, opening the path to ultra-powerful semiconductor processors based on quantum computation." µ
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Faster here is that frequency can be precieved quicker than voltage switch.
Like tonal Reeds from lore, Light can be Tuned, altered or Stopped. Reflective & Refractive, Cycles Much more than few hundred million per s. Visible hundreds of nm in size, (Gamma Ray is .1 to .01 nm.) So Large & Full of REDNESS.
Might Work as Stated in Some Unusual, Precise, Switching. Relatively Easily made.
drashek
Jake, the idea that quantum computing could have vast processing potential is that many bottlenecks are reduced and some magically gone ... like transfer rates.
quantum entanglement proves a theory aptly titled "spooky action at a distance" coined by Einstein himself.
"spooky" because the transfer rate would be infinite ... not confined by the speed of light which limits many of our current optical technologies at 180k/hr. "action at a distance" because we're talking about the instance transfer of information between 2 points.
This is not to be confused with a shrunk dies or even atomic computing ... quantum computing would be the use of technology exploiting the very properties of physics itself to emulate current hardware and software. "quantum entanglement" would be 1 area of information transfer rates only ... this does not solve any other issue of replacing current electronics towards quantum computing like transistors for example. or again ... optical discs!
sorry guys ... but unless you want to re-write E=MC2 then no! ... dealing with light in a state of flux would mean that it's both "true" and "false" until it's somehow referenced to which an entangled point of reference (at a distance) would be the opposite. you cannot manipulate a property of quantum physics. it's speed, state, position can't be known at the same time and not due to technology limitations but rather they don't always exist at the same time.
sorry guys, we're not talking about computing or technology and the two don't mix ... in the quantum world, mathematics falls apart easily.
You're confusing "faster than light" triggered change between two particles which can take place over long distance (and which also cannot send any information, much like a shadow can move faster than light but not send information) and quantum computing.
Personally, I say quantum computing can take its time. The ability to decrypt heavily encrypted items quickly is not a change that I look forward to anyone having.
Scientists have already made a few proof-of-concept "computers" using only a couple of entangle photons as their quibts. Scientists can anticipate the inherent randomness, just look at Shor's algorithm.
The neat thing about this development is that where before you needed lasers to get the entangle photons, now you can just used LEDs, which are much cheaper. Let's see what advances can come from this.
I don't see how quantum entanglement could increase the capacity of optical disks. this has nothing to do with the means to read transferred information as the result of quantum entanglement and hard-storage can't be in a flux state ... this was just bizarre to have even mentioned.
In regards to quantum computing, you won't see it ever happen. they're exploiting a flaw in both newton's law and Einsteins theory of relativity which by itself is fascinating enough to warrant research and development to try to understand how it's possible to do this as the transfer rate is infinite (faster than light). but it's not for computing as you cannot control the output of the first entangled point of reference to which the physically disconnected (and potentially very distant) second point of reference would then have the opposite information. to put that simple, you can't make the first entanglement true to have the second be false ... it's really random ... so, you could effectively transfer random information at infinite rates ... useless!
this is getting close to hyping sci-fi