モジュール式光子量子コンピュータのスケーリングとネットワーク化
H Aghaee Rad1, T Ainsworth1, R N Alexander2
1Xanadu Quantum Technologies Inc., Toronto, Ontario, Canada.
Nature
|January 22, 2025
まとめ
研究者は35個のチップを使って フォトニック量子コンピュータモデルを作りました これは統合された光子システムによる 普遍的で 欠陥を許容する量子コンピューティングへの 拡張可能な経路を示しています
科学分野:
- 量子コンピューティング
- 光学について
- 統合フォトニクス
背景:
- フォトニクスは,チップの統合,光ファイバー,および室温操作により,量子コンピューティングのための有望なプラットフォームです.
- 普遍的で故障を許容する量子コンピューティングのための基本的な機能を持つ完全な統合システムには,実験的な実証が必要です.
研究 の 目的:
- フォトニック量子コンピュータのスケールモデルを構築し,実証する.
- ユニバーサルで故障を許容する量子コンピューティングのための統合システムの実現可能性を示します.
主な方法:
- 35個の光子チップ,84個の圧縮器,36個の光子数分解検出器を使って 量子コンピュータモデルを作りました
- 光ファイバーの相互接続で ネットワーク化された分散型,スケーラブルなモジュール
- 非ガウスの状態と適応的な測定のシンセシスを含め,普遍性と故障耐性の重要な構成要素を実証した.
主要な成果:
- クラスター状態を合成し 864億のモードを持つ 異なるチップに絡み合いました
- リアルタイムの解読でフォリエイトされた距離-2の繰り返しコードを実装した.
- 資源状態の合成,リアルタイムマルチプレキシング,時空クラスター状態形成,適応的な測定を実証した.
結論:
- 構築された光子量子コンピュータモデルは,故障耐性の値を越えるための経路を示しています.
- この研究は,光子量子コンピュータをスケールして有用なアプリケーションに取り組むための基礎を築いています.
- 光学損失の許容量の分析は,故障許容の主要な障害を克服するための洞察を提供します.
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