Year: 2025
Type: article
Abstract: Conversion of a quantum state from a flying qubit to a memory qubit is crucial for distributed quantum computing. However, this requires precise spatiotemporal or frequency/phase alignment. Here, we experimentally demonstrate quantum teleportation-based state transfer from a photon into a spin in a nitrogen-vacancy center in diamond robust against both spectral and temporal errors. The achieved fidelity exceeds 0.94 within a frequency error of 100 MHz and 0.93 within an arrival-time error of 100 ns. This achievement could enable extraordinarily robust entanglement generation between remote quantum memories compared with the conventional photon-interference-based approaches and paves the way for stable quantum networks.
Source: Optics Letters
DOI: 10.1364/ol.567933
Authors: Daisuke Ito, Yuhei Sekiguchi, Raustin Reyes, Taichi Fujiwara, Toshiharu Makino, Hiromitsu Kato, Hideo Kosaka
Language: English
Subfield: Artificial Intelligence
Field: Computer Science
Domain: Physical Sciences
Open Access status: green
Awards: G1658339471, Universal holonomic quantum gate with optical shift control for diamond quantum computers, G2521286739, 量子計算網構築のための量子インターフェース開発, G3534460509, G3703913356, ダイヤモンド量子セキュリティ, Universal quantum media conversion in diamond quantum storage, G6150807914, G6718509927, G7222400979, G8843996216
OpenAlex ID: W4412472290