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Quantum teleportation across a metropolitan fibre network

zqyin 添加于 2016-5-31 12:56 | 1265 次阅读 | 0 个评论

作者
Valivarthi R, Puigibert M li G, Zhou Q, Aguilar GH, Verma VB, Marsili F, Shaw MD, Nam SW, Oblak D, Tittel W
摘要
If a photon interacts with a member of an entangled photon pair via a so-called Bell-state measurement (BSM), its state is teleported over principally arbitrary distances onto the second member of the pair. Starting in 1997, this puzzling prediction of quantum mechanics has been demonstrated many times; however, with one very recent exception, only the photon that received the teleported state, if any, travelled far while the photons partaking in the BSM were always measured closely to where they were created. Here, using the Calgary fibre network, we report quantum teleportation from a telecommunication-wavelength photon, interacting with another telecommunication photon after both have travelled over several kilometres in bee-line, onto a photon at 795~nm wavelength. This improves the distance over which teleportation takes place from 818~m to 6.2~km. Our demonstration establishes an important requirement for quantum repeater-based communications and constitutes a milestone on the path to a global quantum Internet.
详细资料
- 关键词: quant-ph
- 文献种类: Manual Script
- 期卷页: 2016年
- 日期: 2016-5-28
- 发布方式: arXiv e-prints
- 备注:arXiv:1605.08814v1
学科领域自然科学 » 物理学
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