1 Molecule Computes Thousands of Times Faster Than a PC

alexhiggins732 writes with this tantalizing PopSci snippet: "A demo of a quantum calculation carried out by Japanese researchers has yielded some pretty mind-blowing results: a single molecule can perform a complex calculation thousands of times faster than a conventional computer. A proof-of-principle test run of a discrete Fourier transform — a common calculation using spectral analysis and data compression, among other things — performed with a single iodine molecule transpired very well, putting all the molecules in your PC to shame."

Comments

Thats cheating

[imsabbel]

In a way. thats just the same as claiming a laser can caluclate a 2D FFT if you look at the frauenhofer diffraction of an aperture.
Or that single candle can render better than any GPU by the way a room looks like when its illuminated by it.

You just have to redefine a basic property of your system as "calculation"

Re:Thats cheating

[White Flame]

No, the current through the transistor is a binary representation of a value, which can be run through arbitrary programs on the same general hardware. This is just using analog resonances to create a dedicated mechanical "FFT device" of actual waveforms, not performing analyses on numeric data.

To use a Car Analogy (TM), this is like saying I've invented a better driving simulation algorithm than Gran Turismo/Forza/rFactor/etc by building & driving a physical car.

Re:Thats cheating

[spanky the monk]

The universe is a pattern of vibrations/energy. Physical laws are just representations or patterns we observe that behave in a consistent way, which we have codified in some sort of language (usually maths). There are no "real" laws of physics, just abstract representations of observable phenomena. Some do a better job of representation than others.

Nature doesn't "use" pi or e to do calculations. These symbols are just part of our codification of consistent patterns which we have abstracted and aren't real outside our heads. Nothing "calculates" the physical world, rather, we calculate how parts of it will behave. In other words physics and maths MIMIC the universe; the universe is certainly NOT based on maths or physics. What will calculate the calculator. Don't confuse abstractions with reality.

Re:To understand the implications of Quantum Compu

[mestar]

One time pads already are unbreakable.

In defense of Moore's law

[Iamthecheese]

It was indeed a mere observation of conjuncture. That said, it has been an extraordinarily useful one in the form of a challenge to humankind. Without it we would not have progressed the way we have. Intel is using Moore's law as a road map, forcing other companies *coughAMDcough* to innovate just to keep up. And that is why we have the enormous speeds available today. So we have a prediction that shaped the future. Why bother? Because our dreams shape our world.