Thoughts:Is this Uranium compound radioactive do you think? As in hazardous? Drexler's nanotech looks best used in medical microrobots, and not manufacturing-and that prize goes to 3D-bulk printing.I believe there has been problems in getting these entanglements in QC to successfully attain actual operations. Does this sound right?How many successful operations per sec will QC need to do, before it dramatically achieves 'supremacy?'How many successful operations per sec will it take to achieve a network that improves on, or creates, new inventions for humans?What I am attempting to do to is ascertain impact on society, how much, and when?
-----Original Message----- From: John Clark <[email protected]> To: everything-list <[email protected]> Sent: Wed, Aug 21, 2019 6:56 pm Subject: Very recent developments in topological quantum computing In my opinion a scalable quantum computer could bring about a singularity in human affairs as surely as Drexler's nanotechnology, and the most promising way of achieving this is through a fault tolerant topological quantum computer. In the current issue of the journal Science (August 16 2019) a revolutionary new type of superconductor has been discovered, uranium ditelluride (UTe2), that may turn out to have some considerable bearing on this. Nick Butch, from the National Institute of Standards and one of the authors of the paper says: "This is potentially the silicon of the quantum information age. You could use uranium ditelluride to build the qubits of an efficient quantum computer." ferromagnetic spin-triplet superconductivity Uranium Ditelluride is a very unusual superconductor for several reasons: 1) It is a topological superconductor, meaning that the interior is a insulator but the surface is a superconductor. 2) It can tolerate enormously strong magnetic fields, much higher than other superconductors. 3) Most superconductors are spin singlet, this means that the spins in the electrons in the Cooper Pairs, which carry the electrical current in all superconductors, are lined up in a antiparallel direction; but Uranium Ditelluride is spin triplet, their electron spins are perpendicular. All this adds up to the surface of uranium ditelluride being the ideal stage set to produce logic gates made of Majorana pseudoparticles that obey non-Abelian statistics. And that means you could store quantum information topologically which would make it very resistant to quantum decoherence for the same reason you're unlikely to be able to untie a knot by just bumping it, you might change its shape but not its topological properties. And quantum decoherence is by far the most important obstacle we must overcome if we want to build a scalable quantum computer. And that is not the only new development in the last few weeks, Javad Shaban and his team found something similar in Indium arsenide (InAs) although you must get it much colder before it becomes superconducting, .007 Kelvin verses 1.6 Kelvin for Uranium ditelluride. Phase signature of topological transition in Josephson Junctions Dr. Shabani said:"We see value in these particles because of their potential to store quantum information in a special computation space where quantum information is protected from the environment noise. As a result, we have sought to engineer platforms on which these calculations could be conducted. The new discovery of topological superconductivity in a two-dimensional platform paves the way for building scalable topological qubits to not only store quantum information, but also to manipulate the quantum states that are free of error. These findings strongly supports the emergence of a topological phase in the system. This offers a scalable platform for detection and manipulation of Majorana bounds states for development of complex circuits for fault-tolerant topological quantum computing." By the way, the leading company in all this is none other than Microsoft. John K Clark -- 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/CAJPayv21xusoDeKTf2thrg2L2Z%3DF%3DkfxEQTwTz%3DThA3Vtah%2BCQ%40mail.gmail.com. -- 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/616439921.594582.1566432358378%40mail.yahoo.com.
