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Proceedings Paper

1024-Qubits-Quantum Fourier Transform on a Fiber-optics circuit
Author(s): Akihisa Tomita; Kazuo Nakamura
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Paper Abstract

Quantum Fourier transform (QFT) is an important subroutine in quantum computation. A QFT followed by measurement (MQFT) which appears in the final part of the phase estimation algorithm was demonstrated on a simple circuit based on fiber-optics. The MQFT was shown to be robust against imperfections in the rotation gate. Error probability was estimated to be 0.01 per qubit but could be further reduced by taking the majority of the accumulated results. The reduction of error probability resulted in a successful MQFT of 1024 qubits. The present results not only demonstrate the potential of fiber optics but provide an important clue for quantum computer design.

Paper Details

Date Published: 1 June 2005
PDF: 12 pages
Proc. SPIE 5833, Quantum Informatics 2004, (1 June 2005); doi: 10.1117/12.620516
Show Author Affiliations
Akihisa Tomita, Japan Science and Technology Agency (Japan)
Kazuo Nakamura, NEC Corp. (Japan)

Published in SPIE Proceedings Vol. 5833:
Quantum Informatics 2004
Yuri I. Ozhigov, Editor(s)

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