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Bibliographic Details
Main Authors: Ito, Daisuke, Sekiguchi, Yuhei, Reyes, Raustin, Fujiwara, Taichi, Makino, Toshiharu, Kato, Hiromitsu, Kosaka, Hideo
Format: Preprint
Published: 2025
Subjects:
Online Access:https://arxiv.org/abs/2505.09292
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Table of Contents:
  • 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 enables extraordinarily robust entanglement generation between remote quantum memories compared with the conventional photon-interference-based approaches and paves the way for stable quantum networks.