Posted on 11/16/2018 12:50:49 PM PST by ETL
quantum computer is a device that performs quantum computing. Such a computer is different from binary digital electronic computers based on transistors.
Whereas common digital computing requires that the data be encoded into binary digits (bits), each of which is always in one of two definite states (0 or 1), quantum computation uses quantum bits or qubits, which can be in superpositions of states.
A quantum Turing machine is a theoretical model of such a computer and is also known as the universal quantum computer. The field of quantum computing was initiated by the work of Paul Benioff[2] and Yuri Manin in 1980,[3] Richard Feynman in 1982,[4] and David Deutsch in 1985.[5]
As of 2018, the development of actual quantum computers is still in its infancy, but experiments have been carried out in which quantum computational operations were executed on a very small number of quantum bits.[6]
Both practical and theoretical research continues, and many national governments and military agencies are funding quantum computing research in additional effort to develop quantum computers for civilian, business, trade, environmental and national security purposes, such as cryptanalysis.[7]
A small 20-qubit quantum computer exists and is available for experiments via the IBM Quantum Experience project. D-Wave Systems has been developing their own version of a quantum computer that uses annealing.[8]
Large-scale quantum computers would theoretically be able to solve certain problems much more quickly than any classical computers that use even the best currently known algorithms, like integer factorization using Shor’s algorithm (which is a quantum algorithm) and the simulation of quantum many-body systems.
There exist quantum algorithms, such as Simon’s algorithm, that run faster than any possible probabilistic classical algorithm.[9]
A classical computer could in principle (with exponential resources) simulate a quantum algorithm, as quantum computation does not violate the Church–Turing thesis.[10]:202
On the other hand, quantum computers may be able to efficiently solve problems which are not practically feasible on classical computers.
But can it kill Schrodinger’s cat?..................
Love the Landauer quote at the end. I’ve seen so many basic new product programs (forget about the quantum aspects) that have run into significant issues because of this:
“...does not in its current form take into account all possible sources of noise, unreliability and manufacturing error, and probably will not work.”
Your summation sounds MUCH more positive about the future of quantum computing than the author’s.
He seems quite bitter against quantum computing :)
Maybe he lost a girl over it
All you have to do is open the box with a gun in your hand.
Can lotus notes and McAfee drive encryption run properly in quantum computing?
You'd have to ask Karl
7
He urged proponents of quantum computing to include in their publications a disclaimer along these lines: “This scheme, like all other schemes for quantum computation, relies on speculative technology, does not in its current form take into account all possible sources of noise, unreliability and manufacturing error, and probably will not work.”
He should check with the Chinese who claim to have a working quantum computer and the quantum communications tech to go with it.
But do you pull the trigger?
If you buy the first Quantum Mac model and use it to calculate pi does that make it Apple pi?
Technology will never advance that far...................
One of the limitations of modern computers is that the are only 2 states. Double or quadruple the number of states and you increase throughput and speed. Create a simple transistor gate that has 8 states.
dhs12345, dp0622
Did you two come off the same assembly line?
Until they develop a quantum computer that can accurately predict the weather day-after-tomorrow, I ain’t buying it...............
There are tri-state devices...............
I thought quantum computing started as an April fools joke from an issue of CODE magazine.
7
Is that too much to ask?
If you really want to make progress in Quantum Computing, convince the Sex Industry it is in their best interest to apply it.
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