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This is awesome, I think I learned more about how QC works in this one talk than in everything I've seen and read up till now. What the gates actually are, what

by sabujp 10y ago

This is awesome, I think I learned more about how QC works in this one talk than in everything I've seen and read up till now. What the gates actually are, what they do, and their relation to real bits and qbits

alanbernstein 10y ago
Hmm, I've tried and failed to understand QC a few times... I wonder if you could help me out here? What is supposed to be interesting about the result at 15:15? As far as I can tell, the shader contains all the information that is presented as the output here, so it doesn't seem impressive. But he says "our calculation produced the complete answer perfectly with zero noise" as if this is a serious accomplishment? I don't get it.
- justifier 10y ago
  15:15 is interesting because using these shaders the researcher is able to illustrate the pixel pattern as it presents itself in terms of quantum phase differences and yes, you are right, in terms of relying solely on the simulation, this is hardly a 'serious accomplishment' because it relies on many classical computations to simulate but rather it is the shaders and their use that are the accomplishment the simulation is only a test bed to investigate the practicality of these shaders before placing them into a real quantum computer since working directly with quantum computers currently is both difficult and limiting you are better off with a computation heavy simulation to try out ideas to determine which ones have the greatest potential for successful results imagine prototyping on a device that needs to remain at 17millikelvin for instance, the author states it took some time before realising an inverted fourier transform was necessary to achieve these results, even noting almost giving up on the whole thing as a result of the constant failings while using the original idea of a forward fourier transform could such a revelation had been made using the actual quantum hardware? sure.. maybe, but the probability, ;p, is much much lower with the quantum computer you can think of the parallel computations in terms of a single classical computation so the computation heavy simulation shows that "our calculation produced the complete answer perfectly with zero noise" which is encouraging that if placed into a real quantum computer, as is shown later in the video, we can get zero noise results with essentially a single computation when placed into the real quantum computer the results still retain some noise due the limitations of current real quantum computers because they had to detrimentally limit their qubit use.. further exemplifying the importance of the simulator but given a quantum computer that can perform using the same number of qubits as the simulation these shaders should give zero noise results which would be a serious accomplishment .. is there a word for 'theoretically based on simulation'? simulationally theoretic? ;p

by sabujp 10y ago

alanbernstein 10y ago

Hmm, I've tried and failed to understand QC a few times... I wonder if you could help me out here? What is supposed to be interesting about the result at 15:15? As far as I can tell, the shader contains all the information that is presented as the output here, so it doesn't seem impressive. But he says "our calculation produced the complete answer perfectly with zero noise" as if this is a serious accomplishment? I don't get it.

justifier 10y ago
15:15 is interesting because using these shaders the researcher is able to illustrate the pixel pattern as it presents itself in terms of quantum phase differences and yes, you are right, in terms of relying solely on the simulation, this is hardly a 'serious accomplishment' because it relies on many classical computations to simulate but rather it is the shaders and their use that are the accomplishment the simulation is only a test bed to investigate the practicality of these shaders before placing them into a real quantum computer since working directly with quantum computers currently is both difficult and limiting you are better off with a computation heavy simulation to try out ideas to determine which ones have the greatest potential for successful results imagine prototyping on a device that needs to remain at 17millikelvin for instance, the author states it took some time before realising an inverted fourier transform was necessary to achieve these results, even noting almost giving up on the whole thing as a result of the constant failings while using the original idea of a forward fourier transform could such a revelation had been made using the actual quantum hardware? sure.. maybe, but the probability, ;p, is much much lower with the quantum computer you can think of the parallel computations in terms of a single classical computation so the computation heavy simulation shows that "our calculation produced the complete answer perfectly with zero noise" which is encouraging that if placed into a real quantum computer, as is shown later in the video, we can get zero noise results with essentially a single computation when placed into the real quantum computer the results still retain some noise due the limitations of current real quantum computers because they had to detrimentally limit their qubit use.. further exemplifying the importance of the simulator but given a quantum computer that can perform using the same number of qubits as the simulation these shaders should give zero noise results which would be a serious accomplishment .. is there a word for 'theoretically based on simulation'? simulationally theoretic? ;p