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Another Step In Quantum Computing: A Functional Interconnect
New submitter Gennerik writes: According to a recent article in the MIT Technology Review, a team of international physicists have been able to create a quantum computing interconnect. The interconnect, which is used to connect separate silicon photonic chips, has the important feature of preserving entanglement. This marks a vital step in creating quantum computers that don't have to work in isolation. According to the article, the trick that
The trick that [University of Bristol Researcher Mark Thomson] and pals have perfected is to convert the path-entanglement into a different kind of entanglement, in this case involving polarization. They do this by allowing the path-entangled photons to interfere with newly created photons in a way that causes them to become polarized. This also entangles the newly created photons, which pass into the optical fiber and travel to the second silicon photonic chip.
Summary would have read better if the submitter had read over it. ;)
I do not want your cheap brainburning drugs. They are useless for work. And I am a working man today.
https://www.google.com/search?q=recursion
someone got lost somewhere while writing teh summary
This whole thing is pointless if we cannot run our favorite applications on it.
Hey, its me, your boss (please, call me a thought leader for our synergy group.) Ive recently been made aware of our tubes, and im concerned to find out we arent keeping abreast of the latest technology in quantum...functional....photon quantum...inter...
...Listen. Im told we need to get our functional quantum polarity to be a photon. I read this on a technical article and --as I understand this -- none of our current infrastructure supports paths. Ive looked at my desktop several times today and cant find the icon for quantum entangler danglers or the polar photons. Ive put a ticket in to entangle the photons I ordered (they should arrive sometime friday) so we can start computing quantums.
PS, if quantum photon tangler re-danglers are activated, let me know which light on the server indicates this and how i can check to make sure the tangler is launching fresh photons.
Good people go to bed earlier.
In related news on quantum computing 6-photon boson sampling has also been performed (incidentally also by researchers at Bristol with some overap between the two groups). See http://www.scottaaronson.com/blog/?p=2435 for details and discussion. Boson sampling is an important idea which involves estimating the probability distribution of non-intersecting photons. Crucially, boson sampling may be substantially easier to construct since they don't require nearly as much in the way of complicated machinery and error correction as full-power quantum computers, but there are also strong reasons to believe that boson sampling cannot be done efficiently on a conventional computer. That paper is http://arxiv.org/abs/1505.01182 (which also has some other very cool results - they've made essentially reconfigurable chips for this rather than having to make new ones for any specific photon sampling procedure). The original paper which proposed boson sampling is http://www.scottaaronson.com/papers/optics.pdf.
All this talk of entanglement sounds like something out of Calvin and Hobbes.
] and pals have perfected is to convert the path-entanglement into a different kind of entanglement, in this case involving polarization. They do this by allowing the path-entangled photons to interfere with newly created photons in a way that causes them to become polarized. This also entangles the newly created photons, which pass into the optical fiber and travel to the second silicon photonic chip.
now that we have entanglement working, can we skip the quantum computing and go straight to the ansible?
A twist in the fabric of space where time becomes a loop where time becomes a loop where time becomes a loop where time becomes a loop where time becomes a loop where time becomes a loop where time becomes a loop where time becomes a loop from which there is no escape.
If I can share entangled states via an interconnect I can send a member of a pair to another location before I cause the state of it's twin to be resolved. This allows me to build a pair of quantum buffers, which gives you zero lag links and caches etc.
How entanglement is claimed:
The claim is that two photons are entangled, that when you detect a property of one, it *sets* the same property of the other.
This is typically "proved" by experiments like Quantum Eraser. But of course it violates causality and breaks time and all sorts of things.
https://en.wikipedia.org/wiki/Quantum_eraser_experiment
This is how it actually works:
The detector 1 and detector 2 are joined by a "Coincidence circuit", so when the polarizing filter is placed in front of D1, only photons with the correct polarization are let into the detector, and only the corresponding photon is counted as detected at D2.
So in effect the photon is tagged by time, and the link between the two photons is the coincident detector.
No entanglement, just a piece of man made electronics.
And to disprove it, you can simply measure *all* photons, and *simulate* the coincidence detector later in a spreadsheet or computer program. Is the photons state now being set by the spreadsheet? No, its not.
What this group have built is a link that they claim does not permit them to know the state of the photon as it travels, and thus doesn't count as 'detection' under the vague concept of detection. But a vacuum also fits that bill.
See Delayed Quantum Choice Eraser experiment. Which QM believers claim affects things in the past, i.e. time travel. However there is a coincidence detectors in the experiment, which means you are simply filtering at t=0 and only looking at experimental results at t=-1 that fit your entanglement criteria at t=0!, really such a simple flaw, and yet they turn a blind eye to it.
It's the flock of starlings thing again. If your detector can only see a flock and not a single starling, then all of these artifacts appear in your data, including time travel and probabilistic position as per QM model. We *already* have proof of the flock in the proton.
Consider the proton, a QM particle that fits the QM model, and yet we already know from deep inelastic scattering that it is actually made of smaller particles.
So the proton was never *AT* a position when it was detected, it was the effect of these smaller particles on the detector that was *AT* a position. So we already (since the 1970s when the proton was discovered to be made of smaller particle hypothesized to be Quarks) have proof that QM is simply the effect of a group or cloud of smaller particles on the detector. It does not set the position of the proton, because the proton didn't exist as a particle, it was just an effect of a group of quarks!
So the proof is all there, no entanglement, QM simply describes the effect of a detector, detecting smaller cloud or groups of particles.