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Bosonic Continuous Variable Quantum Computing

Quantum Nondemolition Gate Operations and Measurements in Real Time on Fluctuating Signals

arXiv
Authors: Yu Shiozawa, Jun-ichi Yoshikawa, Shota Yokoyama, Toshiyuki Kaji, Kenzo Makino, Takahiro Serikawa, Ryosuke Nakamura, Shigenari Suzuki, Shota Yamazaki, Warit Asavanant, Shuntaro Takeda, Peter van Loock, Akira Furusawa

Year

2017

Paper ID

2576

Status

Preprint

Abstract Read

~2 min

Abstract Words

81

Citations

N/A

Abstract

We demonstrate an optical quantum nondemolition (QND) interaction gate with a bandwidth of about 100 MHz. Employing this gate, we are able to perform QND measurements in real time on randomly fluctuating signals. Our QND gate relies upon linear optics and offline-prepared squeezed states. In contrast to previous demonstrations on narrow sideband modes, our gate is compatible with non-Gaussian quantum states temporally localized in a wave-packet mode, and thus opens the way for universal gate operations and realization of quantum error correction.

Why This Paper Matters

  • This paper contributes to the Bosonic & Continuous-Variable Quantum Computing research area in the Quantum Articles archive.
  • It adds a 2017 reference point for readers tracking recent quantum research.
  • We demonstrate an optical quantum nondemolition (QND) interaction gate with a bandwidth of about 100 MHz.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1712.08411 [2] arXiv https://arxiv.org/abs/1712.08411 [3] Publisher https://arxiv.org/abs/1712.08411

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