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Demonstration of a quantum nondemolition sum gate

Jun-Ichi Yoshikawa1, Yoshichika Miwa, Alexander Huck

  • 1Department of Applied Physics, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.

Physical Review Letters
|December 31, 2008
PubMed
Summary

Researchers experimentally demonstrated a quantum nondemolition (QND) sum gate using squeezed states and feedforward. This continuous-variable gate is crucial for universal quantum computation and quantum nondemolition measurements.

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