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Type-Ii Quantum Computers

Author

Listed:
  • JEFFREY YEPEZ

    (Air Force Research Laboratory, Hanscom Field, Massachusetts 01731, USA)

Abstract

This paper discusses a computing architecture that uses both classical parallelism and quantum parallelism. We consider a large parallel array of small quantum computers, connected together by classical communication channels. This kind of computer is called atype-II quantum computer, to differentiate it from a globally phase-coherent quantum computer, which is the first type of quantum computer that has received nearly exclusive attention in the literature. Although a hybrid, a type-II quantum computer retains the crucial advantage allowed by quantum mechanical superposition that its computational power grows exponentially in the number of phase-coherent qubits per node, only short-range and short time phase-coherence is needed, which significantly reduces the level of engineering facility required to achieve its construction. Therefore, the primary factor limiting its computational power is an economic one and not a technological one, since the volume of its computational medium can in principle scale indefinitely.

Suggested Citation

  • Jeffrey Yepez, 2001. "Type-Ii Quantum Computers," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 12(09), pages 1273-1284.
    • Handle: RePEc:wsi:ijmpcx:v:12:y:2001:i:09:n:s0129183101002668
    DOI: 10.1142/S0129183101002668
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