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Proceedings Paper

Hilbert space computing by analog circuits
Author(s): Laszlo B. Kish
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Paper Abstract

We show that, if time comes when quantum algorithms can be used for universal parallel computation, the "quantum-parallel" computer hardware will most probably be a classical physical system corresponding to a Hilbert space and the actual realization may be the combination of analog and digital circuits. We first point out the practical difficulties of universal quantum computing which may prohibit practical applications as universal computers. Then we show how to apply analog microelectronic circuits to realize the architecture, data processing and parallel computing abilities of quantum computing via Hilbert space computing with analog circuits. Such a Hilbert-space-analog (HSA) computer simulates the Hilbert space and its operators, and it is able to use and test quantum algorithms developed for the real quantum computers. Such a computer would be free of most of the practical difficulties of realizing and running a real quantum computer. This computer can be made universal. It is remarkable that by using the same numbers of transistors as in today's PCs, such a HSA computer can manipulate ~107 analog numbers corresponding to ~22 qubits, simultaneously, by quantum-parallel processing.

Paper Details

Date Published: 8 May 2003
PDF: 10 pages
Proc. SPIE 5115, Noise and Information in Nanoelectronics, Sensors, and Standards, (8 May 2003); doi: 10.1117/12.488741
Show Author Affiliations
Laszlo B. Kish, Dept. of Electrical Engineering, Texas A&M Univ. (United States)

Published in SPIE Proceedings Vol. 5115:
Noise and Information in Nanoelectronics, Sensors, and Standards
Laszlo B. Kish; Frederick Green; Giuseppe Iannaccone; John R. Vig, Editor(s)

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