Everything will be faster.
in which we demonstrate the entanglement of two quantum memories via a fiber link of 50 km ," said Xiao-Hui Bao, one of the researchers who carried out the study.
"In that experiment, both two memories we used were located within one lab and thus not fully independent. The next step in our research was to make the two memories fully independent while placing a long distance between them."In experiments by Bao and colleagues, two different quantum nodes in an urban environment were placed 41010 feet apart. In the first node, dubbed node A, they entangled their first quantum memory with a single photon.
"In this way, we entangle the two remote quantum memories," Bao explained. "Since the photon emitted from our memory is near infrared , being not suitable for low-loss transmission in fiber, we make use of the quantum frequency conversion technique to shift the photon's wavelength to 1342 nm instead, which improves the overall transmission efficiency significantly.
This latest work by Bao and colleagues, the research focusing on quantum technology and the establishment of the quantum internet, sheds light on the research that will follow in this area. "In the current experiment, the remote entanglement generated is not heralded yet, limiting its further applications," Bao added. "In the near future, we plan to implement a heralded version, meanwhile we plan to extend a number of nodes as well."A quantum internet that connects remote quantum processors should enable a number of revolutionary applications such as distributed quantum computing.
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