Knill, E.
(2008),
Building Quantum Computers, IEEE Information Theory Society News Letter, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=900161
(Accessed December 8, 2024)
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Building Quantum Computers
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Author(s)
Abstract
In theory, quantum computers can be used to efficiently factor numbers, quadratically speed up many search and optimization problems, and enable currently impossible physics simulations. At first, quantum states appeared to be too fragile for implementing large quantum computers. Fortunately, because of theoretical advances in quantum error correction and fault tolerance, there are now no fundamental obstacles to realizing quantum computers. However, building quantum computers is difficult. Current experiments can barely achieve adequate control of two quantum bits. Nevertheless, the gap between theoretical and practical quantum computing is closing. In what follows, I give a brief explanation of what quantum computers are, explain why we believe that arbitrarily large quantum computations can be accurately implemented in principle, and survey the experimental state of the art and main implementation challenges.Citation
IEEE Information Theory Society News Letter
Volume
58
Issue
4
Pub Type
Others
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Keywords
Quantum computers, quantum devices
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Created December 1, 2008, Updated February 19, 2017