Telecom-Wavelength Quantum Repeater Node Based on a Trapped-Ion Processor

被引：35

作者：

Krutyanskiy, V. ^{[1
,2
]}

Canteri, M. ^{[1
,2
]}

Meraner, M. ^{[1
,2
]}

Bate, J. ^{[1
]}

Krcmarsky, V. ^{[1
,2
]}

Schupp, J. ^{[1
,2
]}

Sangouard, N. ^{[3
]}

Lanyon, B. P. ^{[1
,2
]}

机构：

[1] Univ Innsbruck, Inst Experimentalphys, Tech Str 25, A-6020 Innsbruck, Austria

[2] Austrian Acad Sci, Inst Quantenopt & Quanteninformat, Tech Str 21a, A-6020 Innsbruck, Austria

[3] Univ Paris Saclay, Inst Phys Theor, CEA, CNRS, F-91191 Gif Sur Yvette, France

来源：

PHYSICAL REVIEW LETTERS | 2023年 / 130卷 / 21期

关键词：

HERALDED ENTANGLEMENT; ATOMIC ENSEMBLES; SINGLE ATOMS; NETWORK;

D O I：

10.1103/PhysRevLett.130.213601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A quantum repeater node is presented based on trapped ions that act as single-photon emitters, quantum memories, and an elementary quantum processor. The node's ability to establish entanglement across two 25-km-long optical fibers independently, then to swap that entanglement efficiently to extend it over both fibers, is demonstrated. The resultant entanglement is established between telecom-wavelength photons at either end of the 50 km channel. Finally, the system improvements to allow for repeater-node chains to establish stored entanglement over 800 km at hertz rates are calculated, revealing a near-term path to distributed networks of entangled sensors, atomic clocks, and quantum processors.

引用

页数：7

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