> On 6 Jul 2020, at 14:41, Lawrence Crowell <[email protected]> > wrote: > > On Monday, July 6, 2020 at 6:46:16 AM UTC-5, John Clark wrote: > On Mon, Jul 6, 2020 at 6:19 AM Philip Thrift <[email protected] > <javascript:>> wrote: > > Sabine Hossenfelder @skdh > > > Take it from me when I say no nation on this planet is doing strategic > planning on quantum computers. > > NSA, Army Seek Quantum Computers Less Prone to Error > <https://www.defenseone.com/technology/2019/12/nsa-army-research-aim-more-advancedand-less-noisyquantum-systems/162029/?oref=d-river> > > > The Pentagon is Trying to Secure Its Networks Against Quantum Codebreakers > <https://www.defenseone.com/threats/2019/05/pentagon-trying-secure-its-networks-against-quantum-codebreakers/157276/?oref=d1-related-article> > > John K Clark > > This may be the case. Quantum computing is interesting, and with the IBM QE I > wrote a couple of simple codes to prepare entangled states and to flip them > in a Hadamard gate. The QE runs at 50 qubits, which is a narrow path so to > speak. It is also an ungainly thing that sits in a cryro-tank. Maybe diamond > with nitrogen atoms at specific locations will lead to practical q-computers. > The big issue needed to be cracked is quantum error correction, where > progress on this in time may lead to more practical quantum computers or > processors that might in the future enter into computers. It is possible in a > few decades that quantum computers might begin to appear all around us. It > will probably take a fair amount of time. > > Sabine's assessment of quantum metrology over quantum computing is probably > correct in the next decade or two.
I agree. The work of Kitaev and Friedmann have convinced me that quantum computer will exist, like the theorem of Shannon has shown that telecommunication is possible. Now, the tasks which remain are quite difficult, and I have no idea if this will take some decades, a century or a millenium. If we can factorise a number sensibly bigger than 15 in my lifetime, I will be impressed…, but I have few doubt that in some future, quantum computing will work, probably for the military before the general public. China seems to have already build telephone nets which seems to be quantum secured, although it is hard to verify. Quantum Cryptographic applications will precede computations per se. I am not at ease with what the human will do with such a technology, but that’s another matter. Bruno > > LC > > -- > You received this message because you are subscribed to the Google Groups > "Everything List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/everything-list/6a9e390b-a33c-4cbd-b9ac-fa87fa4874b4o%40googlegroups.com > > <https://groups.google.com/d/msgid/everything-list/6a9e390b-a33c-4cbd-b9ac-fa87fa4874b4o%40googlegroups.com?utm_medium=email&utm_source=footer>. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/AC31D189-3E68-47DA-B754-CE24E5A102D8%40ulb.ac.be.
