eoinmurray92

Looks like it will be useful. I often make small visualisations of my work in physics with Three.js and the boilerplate time gets annoying sometimes.

Quantum cryptography is in my opinion a bit of a rat race, you can make theoretically perfect systems, but the implementation will probably have some weakness.

You are correct that they seem to have not yet built a proper adiabatic quantum computer (aren't even trying/capable of building a universal one). However I do think that the press around them is good for quantum computing in general.

I work trying to make the early stages of a qcomputer using semiconductor quantum dots and I definitely think that the press around DWave is helpful.

Firstly they are showing that there is a well defined commercial interest in such a computer. I also think that they are paving the path that other such companies will take in the future.

But yeah I agree, they have not yet shown much in terms of a real, useful quantum computer. There is a lot of unjustified hype in the technology, but at the same time I think its useful for this hype to exist for the q-tech industry in general.

You are correct, I was thinking of the master equation of a Markov process. In that case the eigenvalue of 0 gives the stationary distribution under a spectral expansion

I think you mean eigenvalue of 0 for the stationary distribution.

Done!

I have two invites. [Edit]: One left.

[Edited out my email] Thanks!

Would it be a good idea to have a ycombinator for the games that need to be made. I imagine that if there existed a really good VR SDK, and distribute on Steam, that the cost of making said games could drop. I know the indie game industry exists now, but the VR industry is going to really need a breakout game and a ycombinator style funding an distribution model might work?

Anyone know what they are using for document conversion, turning the document into a PDF for example?

> I see no implications of collapse with this -- just probabilities of what values you will obtain in experiment.

Not exactly, your statement is correct for single states, however it breaks down for entangled states. When one wavefunction describes two or more particle a measurement on one particle can be thought of collapsing the two particle wavefunction, which then forces the other particle into a well defined state.

Edit, I am not arguing in favour many worlds theory, only that the 'collapse' of the wavefunction is a well developed and useful idea in quantum physics.

Precede any command by "!" and it sends it to bash, you can use git etc. like this.

wkhmtltopdf for the pdfs, and pandoc to convert to .tex, or .doc

Hey guys Im currently building cheetah.io, if you have any suggestions or ideas be sure to post them.

Yes you correct of course. I thought the point nsns was making that quantum was holding on the micro scale, and not-above that. I didn't get that he was commenting on the difference between _govern_ and _describe_.

All macro systems are consistent with blown up versions of quantum systems. Chemistry, then biology. Whats left?

Ah, the title is misleading, this is not a client for http://livereload.com/, its just an auto-refresh that I built in node.

Not much, other than the fact that its really small and takes two lines to implement. For a node.js app it may be faster than the [node-livereload] because it uses socket.io instead of polling.

[node-livereload]:https://npmjs.org/package/livereload

I am quite confident that quantum dots will be able to do this sort of thing soon (10yrs). They are shown to be reliable and resistant to decoherence.

I don't know much about that weak measurement stuff, only in really theoretical situations thus far. But it seems a nice way to probe entanglement.

Toshiba @ Cambridge have recently shown QKD over broadband networks over 90km using single photon sources.

Before that the distance record was held by Tyndall in Ireland.

Im not explaining it very well and its difficult to condense, perhaps I'll write a blog post that goes into more detail for a layman reader.

The key is in the no cloning theorem. If Evil Eve intercepts some of the signal that Alice is sending Bob she will resend incorrect information 50% of the time.

In a classical bit stream, ie loads of photons in a fiber or a radio wave, Eve can intercept 10% of the signal without Alice or Bob knowing, and she can recreate and send that 10% perfectly.

Alice and Bob can publicly announce measurement bases and a few of the bits to see if the line was touched.

Everyone here is getting confused by the fact that you cannot control the polarity/polarization of the qubits before/as you send them.

This means that one cannot send information faster than light.

What is useful however is the fact that when you send entangled qubits very far away, and measure them is the fact that the results of the measurements are always correlated/anti-correlated.

As an example.

Alice has a pair of entangled qubits, they are in a superposition of 1 and 0 (lets say they are an correlated pair, such that when measured both quibits will always agree).

She sends one to Bob.

Bob and Alice now hold one qubit each out of the entangled pair. They both measure their qubits. The measurement is probabilistic, you have a 50/50 chance of getting a 1 or a 0, but Bobs quibits and Alices quibit will agree everytime.

Since you can't control the outcome of the experiment you cannot decide which bit to send and hence cannot send information.

The useful result is that Alice and Bob have a string of bits which only the two of them know the arrangement of. They can use the string of bits as a one-time pad for encryption.

I have simplified this immensely but I think the point gets across.

Source : I currently undertake research into generating qubits for quantum computation and communication purposes.

It can be used to share a cipher (one-time-pad) because you and I would know the arrangement of bits that the other person has, and no-one else would/could know. However the measurements on the qubit's are probabilistic, so we cannot control the arrangement of bit that we have. We will only know if the are correlated/anti-correlated.

This is one movie/tv site I have come across where the time between finding a movie you like and watching said movie is short enough that I don't get frustrated.

The link to the research paper at the bottom is the bomb, because no matter what it says I should get an hour or two of placebo filled awesomeness from this.

It doesnt do anything. But it might be worth the quick clone to bypass some tedious setup ( it's my repo thats linked )

Anyone know how they turn the html of the cv to a pdf so well?

Groups like Toshiba at cambridge and EPN at Tyndall are doing a lot into quantum key distribution and generating suitable photons for quantum based logic (https://www.toshiba-europe.com/research/crl/qig/quantumkeyse..., http://www.tyndall.ie/content/research-4), but commercial quantum computing is still a way of, currently the most promising methods for doing quantum logic are still at the optical lab bench stage, that being said a lot is known about the problems ahead and how to solve them, I don't know much about non-photonic approaches like Isaac Chaungs group at MIT which seem to have a lot of merit (http://web.mit.edu/~cua/www/quanta/).