I am still a pretty big proponent of quantum computing, but here are some reasons to possibly second-guess quantum computing.
Who knows, maybe Bodhi Agora and myself will go into this story in more depth in a segment of iPonder on iSDaily Tuesday, coming up this February 13th, 2018.
|The Argument Against Quantum Computers|
….Gil Kalai, a mathematician at Hebrew University in Jerusalem, is one of the most prominent of a loose group of mathematicians, physicists and computer scientists arguing that quantum computing, for all its theoretical promise, is something of a mirage.
When did you first have doubts about quantum computers?
At first, I was quite enthusiastic, like everybody else. But at a lecture in 2002 by Michel Devoret called “Quantum Computer: Miracle or Mirage,” I had a feeling that the skeptical direction was a little bit neglected. Unlike the title, the talk was very much the usual rhetoric about how wonderful quantum computing is. The side of the mirage was not well-presented.
And so you began to research the mirage.
Only in 2005 did I decide to work on it myself. I saw a scientific opportunity and some possible connection with my earlier work from 1999 with Itai Benjamini and Oded Schramm on concepts called noise sensitivity and noise stability.
What do you mean by “noise”?
By noise I mean the errors in a process, and sensitivity to noise is a measure of how likely the noise — the errors — will affect the outcome of this process. Quantum computing is like any similar process in nature — noisy, with random fluctuations and errors. When a quantum computer executes an action, in every computer cycle there is some probability that a qubit will get corrupted.
|Read More at quantamagazine.com|