NTT boffins reckon they’ve out-randomed current quantum random number generators
- Reference: 1614234426
- News link: https://www.theregister.co.uk/2021/02/25/ntt_qrng/
- Source link:
The RNG is detailed in an [1]announcement [PDF] and a [2]paper in Nature Communications
[3]
“In this work, by developing an efficient method for certifying randomness (a collaborative work with the researchers at the National Institute of Standards and Technology) and by measuring the arrival time of an optical pulse with time-bin encoding we show that every 0.1 seconds a block of 8192 quantum-safe random bits can be generated, enabling low-latency high-rate performance," the announcement explains. "Further, our scheme guarantees the practical security with realistic quantum devices."
23. 712. 3. 608. 45. 89. 11. 332. 841. 255. You want more? Cloudflare and pals are streaming 'em live from new RNG API [4]READ MORE
[5]
Which matters because quantum computers are hard to scale because observing things in the quantum realm creates "noise" that has to be cancelled out to get computations done reliably. "Realistic" devices try account for the noise rather than take more drastic measures. The result is a less-complex, and therefore more practical, device.
This new invention is said to deliver random numbers without increasing latency. This matters because computers need random numbers for all manner of encryption and other tasks, and would rather not wait for a new entropy nugget to arrive.
The higher transmission rate quantum random number generator is well suited for zero-knowledge proofs, election audits, and other things requiring continuously operating, high-security blocks of fresh, certifiable, public random bits. Such a stream of random numbers should translate into better encryption keys, which will be appreciated as quantum computers are expected to cut through current classical crypto schemes like a knife through butter.
[6]
In the future, the researchers hope to shrink the quantum random number generator to a level making it feasible to fabricate compact products, eventually creating communication networks with high security enhanced by quantum technologies. ®
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[1] https://www.ntt.co.jp/news2021/2102e/pdf/210224b.pdf
[2] https://www.nature.com/articles/s41467-021-21069-8
[3] https://pubads.g.doubleclick.net/gampad/jump?co=1&iu=/6978/reg_emergent_tech/front&sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&tile=2&c=2YDeDS9xB3GwEmE9OeTB6nwAAAEk&t=ct%3Dns%26unitnum%3D2%26raptor%3Dcondor%26pos%3Dtop%26test%3D0
[4] https://www.theregister.com/2019/06/17/cloudflare_random_api/
[5] https://pubads.g.doubleclick.net/gampad/jump?co=1&iu=/6978/reg_emergent_tech/front&sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&tile=3&c=33YDeDS9xB3GwEmE9OeTB6nwAAAEk&t=ct%3Dns%26unitnum%3D3%26raptor%3Deagle%26pos%3Dmid%26test%3D0
[6] https://pubads.g.doubleclick.net/gampad/jump?co=1&iu=/6978/reg_emergent_tech/front&sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&tile=4&c=44YDeDS9xB3GwEmE9OeTB6nwAAAEk&t=ct%3Dns%26unitnum%3D4%26raptor%3Dfalcon%26pos%3Dmid%26test%3D0
[7] https://whitepapers.theregister.com/
Silly
Detect an electron and its in one place, detect it again and its in another, yet overall it doesn't move, the net effect of all those 'motions' is zero.
So that system is not random, it's just noisy and complex, but not random. Hence this is not a good random number generator.
And it clearly is moving, there is no difference between 'measurement' and any other interaction the electron is doing. It is always interacting, hence it is also being measured, hence it is always moving.
But then so is the electron creating the electric field you're measuring it with, so electric is an *oscillating* force.
Which means you're measuring the difference and the noise is the complexity of that system.
What, you didn't really think you had particles going backwards in time did you? That would be silly and violate all kinds of causal relationships in physics! No, you're diffing two oscillating things, a particle and the force you're probing it with.
But its OK, you have an oscillating electric field over which light can travel, so now you understand why light appears to be constant velocity in relation to the matter you measure it against.... if the field is twice the size in a direction for the electron, then its twice the size for light too! So compare light's 'velocity' to the scale of mass will always return the same result. Light must be an F1 motion.... any apparent frequency it has is the difference between the oscillation in matter and the oscillation in the light.
And its OK too, you don't need to pretend the electron is forming a quasi particle with a hole in the fabric of a vacuum to give the electron orientation with respect to magnetic.... it has an orientation since its in motion, so no impossible magic holes in space appearing whenever you need to fixup magnetism. Lights polarity suddenly makes sense too...
Tick tock tick tock tick tock, what is the smallest number of oscillations that can form a stable particle in an oscillating field that doesn't go anyway? Two! So what's an electron? It's an F2, So what is time? It's a rhetorical question of course, light motion is per - oscillation, matters return to the same place is a multiple of those oscillations, so time is per oscillation, regardless of the evenness or otherwise of those oscillations....
And since magnetic has a relationship to electric it is also oscillating.
As is every force, all F1s.
And that's OK too, because the magic propagation rate of forces, propagating by the same mechanism that light travels will be the same apparent speed as light travels....!
But I digress.
It's not random.
Re: It's not random.
I think the easiest thing to do here is to review the derivation of the quantum optical master equation (e.g. Louisell, 1973, Quantum Statistical Properties of Radiation) so you can see an example of how probabalistic behaviour can arise in quantum systems. Good luck! :-)
Random Noise
I'm confident that better random noise is going to be the ultimate achievement of quantum computing.
Random to us with today's level of understanding
and abstraction / model of how the world works...