Experimental Quantum Teleportation and Multi-Photon Entanglement via Interfering Narrowband Photon Sources
Jian Yang, Xiao-Hui Bao, Han Zhang, Shuai Chen, Cheng-Zhi Peng,, Zeng-Bing Chen, and Jian-Wei Pan
TL;DR
This paper demonstrates synchronization-free quantum teleportation and narrowband three-photon entanglement using autonomous photon sources, advancing long-distance quantum communication and quantum memory integration.
Contribution
It introduces a method for achieving quantum teleportation and multi-photon entanglement without synchronization, using narrowband, autonomous photon sources.
Findings
Successful realization of synchronization-free quantum teleportation.
Generation of narrowband three-photon entanglement matching atomic memory requirements.
Potential applications in advanced quantum communication and computation.
Abstract
In this letter, we report a realization of synchronization-free quantum teleportation and narrowband three-photon entanglement through interfering narrowband photon sources. Since both the single-photon and the entangled photon pair utilized are completely autonomous, it removes the requirement of high demanding synchronization technique in long-distance quantum communication with pulsed spontaneous parametric down-conversion sources. The frequency linewidth of the three-photon entanglement realized is on the order of several MHz, which matches the requirement of atomic ensemble based quantum memories. Such a narrowband multi-photon source will have applications in some advanced quantum communication protocols and linear optical quantum computation.
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