A quantum computer for everyone!

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People who would like to run programs for quantum computers have now the chance to use a real conventional quantum computer! Just point your browser to the Qcloud! This is a service offered by the School of Physics of the University of Bristol, UK.

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A "Solution" to Riemann Hypothesis

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Riemann hypothesis is "is a conjecture that the Riemann zeta function has its zeros only at the negative even integers and complex numbers with real part 12". The Riemann zeta function is conventionally represented as the sum:
ζ(z)=∑k=1∞1kz
Recently, I read in Peter Woit's blog that some researchers have published a paper that describes a  Hamiltonian operator H that can be used to possibly solve this problem. This operator has the property that if the eigenfunctions obey a suitable boundary condition, then the associated eigenvalues correspond to the nontrivial zeros of the Riemann zeta function! The paper is also available as a preprint. In a sense, this paper says that one can set up a quantum system whose evolution "solves" Riemann hypothesis. To me this is a reasonable approach to the solution of the problem. And it reminds me of the work of  Leonard Adlemam.
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