{"id":100308,"date":"2019-12-30T20:23:01","date_gmt":"2019-12-31T04:23:01","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2019\/12\/chip-to-chip-quantum-teleportation-and-multi-photon-entanglement-in-silicon"},"modified":"2019-12-30T20:23:01","modified_gmt":"2019-12-31T04:23:01","slug":"chip-to-chip-quantum-teleportation-and-multi-photon-entanglement-in-silicon","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2019\/12\/chip-to-chip-quantum-teleportation-and-multi-photon-entanglement-in-silicon","title":{"rendered":"Chip-to-chip quantum teleportation and multi-photon entanglement in silicon"},"content":{"rendered":"

<\/a><\/p>\n

Integrated optics provides a versatile platform for quantum information processing and transceiving with photons1<\/a>,2<\/a>,3<\/a>,4<\/a>,5<\/a>,6<\/a>,7<\/a>,8<\/a><\/sup>. The implementation of quantum protocols requires the capability to generate multiple high-quality single photons and process photons with multiple high-fidelity operators9<\/a>,10<\/a>,11<\/a><\/sup>. However, previous experimental demonstrations were faced by major challenges in realizing sufficiently high-quality multi-photon sources and multi-qubit operators in a single integrated system4<\/a>,5<\/a>,6<\/a>,7<\/a>,8<\/a><\/sup>, and fully chip-based implementations of multi-qubit quantum tasks remain a significant challenge1<\/a>,2<\/a>,3<\/a><\/sup>. Here, we report the demonstration of chip-to-chip quantum teleportation and genuine multipartite entanglement, the core functionalities in quantum technologies, on silicon-photonic circuitry. Four single photons with high purity and indistinguishablity are produced in an array of microresonator sources, without requiring any spectral filtering. Up to four qubits are processed in a reprogrammable linear-optic quantum circuit that facilitates Bell projection and fusion operation. The generation, processing, transceiving and measurement of multi-photon multi-qubit states are all achieved in micrometre-scale silicon chips, fabricated by the complementary metal\u2013oxide\u2013semiconductor process. Our work lays the groundwork for large-scale integrated photonic quantum technologies for communications and computations.<\/p>\n","protected":false},"excerpt":{"rendered":"

Integrated optics provides a versatile platform for quantum information processing and transceiving with photons1,2,3,4,5,6,7,8. The implementation of quantum protocols requires the capability to generate multiple high-quality single photons and process photons with multiple high-fidelity operators9,10,11. However, previous experimental demonstrations were faced by major challenges in realizing sufficiently high-quality multi-photon sources and multi-qubit operators in a [\u2026]<\/p>\n","protected":false},"author":413,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1523,1617],"tags":[],"class_list":["post-100308","post","type-post","status-publish","format-standard","hentry","category-computing","category-quantum-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/100308","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/413"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=100308"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/100308\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=100308"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=100308"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=100308"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}