Quantum entanglement is a phenomenon in which two particles become indistinguishably linked<\/p>\n
A Chinese research team claims to have smashed the previous record for maintaining two quantum memories in an entangled state at maximum distance.<\/p>\n
According to the researchers, they were able to realise entanglement of two quantum memories over 22 kilometres of field-deployed fibres via two-photon interference. With this feat, they smashed the 1.3-kilometre record achieved during previous quantum memory experiments.<\/p>\n
The researchers said that they were also able to achieve entanglement over 50 kilometres of coiled fibres via single-photon interference.<\/p>\n
The researchers used two quantum memories that were each made of about 100 million extremely cold rubidium atoms<\/p>\n
Quantum entanglement is a phenomenon in which two particles become indistinguishably linked, and whatever happens to one particle instantly affects the other, irrespective of the distance between them.<\/p>\n
According to the researchers, entanglement can be used to create encrypted communications channels that are secured against hacking by the laws of quantum physics.<\/p>\n
Researchers earlier realised entanglement of individual photons across distances beyond 1,000 kilometres. But, entanglement becomes much harder to achieve for larger systems of particles.<\/p>\n
In the current study, the researchers used two quantum memories that were each made of about 100 million extremely cold rubidium atoms.<\/p>\n
The team entangled the quantum state of each system with the state of a single photon and then sent both photons through the fibre-optic cables<\/p>\n
They encoded information onto the clouds of atoms and then extracted a photon from each cloud. The team entangled the quantum state of each system with the state of a single photon and then sent both photons through the fibre-optic cables.<\/p>\n
When Bell measurement was performed simultaneously on two photons, the quantum memories with which the photons were paired became entangled to one another.<\/p>\n
In this experiment, the entanglement of two quantum memories was maintained over 22 kilometres of fibre-optic cable, installed underground.<\/p>\n
In another experiment, the team managed to entangle quantum memories across 50 kilometres using cables that were coiled up in the lab.<\/p>\n
\"Our experiment could be extended to nodes physically separated by similar distances, which would thus form a functional segment of the atomic quantum network, paving the way towards establishing atomic entanglement over many nodes and over much longer distances,\" the researchers said.<\/p>\n
The study was jointly conducted by researchers from the University of Science and Technology of China (USTC), Shanghai Institute of Microsystem and Information Technology, and Jinan Institute of Quantum Technology.<\/p>\n
The detailed findings of the study are published in journal Nature.<\/p>\n
<\/p>\n
See the article here: Quantum entanglement is a phenomenon in which two particles become indistinguishably linked A Chinese research team claims to have smashed the previous record for maintaining two quantum memories in an entangled state at maximum distance. <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27372],"tags":[],"class_list":["post-37647","post","type-post","status-publish","format-standard","hentry","category-quantum-computing"],"_links":{"self":[{"href":"https:\/\/euvolution.com\/open-source-convergence\/wp-json\/wp\/v2\/posts\/37647"}],"collection":[{"href":"https:\/\/euvolution.com\/open-source-convergence\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/euvolution.com\/open-source-convergence\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/euvolution.com\/open-source-convergence\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/euvolution.com\/open-source-convergence\/wp-json\/wp\/v2\/comments?post=37647"}],"version-history":[{"count":0,"href":"https:\/\/euvolution.com\/open-source-convergence\/wp-json\/wp\/v2\/posts\/37647\/revisions"}],"wp:attachment":[{"href":"https:\/\/euvolution.com\/open-source-convergence\/wp-json\/wp\/v2\/media?parent=37647"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/euvolution.com\/open-source-convergence\/wp-json\/wp\/v2\/categories?post=37647"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/euvolution.com\/open-source-convergence\/wp-json\/wp\/v2\/tags?post=37647"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\nChinese researchers smash the record for realising two entangled quantum memories at maximum distance - http:\/\/www.computing.co.uk<\/a><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"