|InterJournal Complex Systems, 71
|Manuscript Number: |
Submission Date: 963011
|Error correction and symmetrization in quantum computers|
Category: Brief Article
A computer is a physical system, subject to the ordinary laws of nature. No error ever occurs in the application of these laws. What we call an error is a mismatch between what the computer does and what we wanted it to do. This may be caused by incorrect programming (software errors, that I shall not consider here), or by imperfect hardware. The computer engineers problem is to design the hardware in such a way that common flaws, which are unavoidable, will almost never cause errors in the final output (namely, in the relevant parts of the final state of the computer).
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