{"id":730,"date":"2021-06-28T17:40:40","date_gmt":"2021-06-28T17:40:40","guid":{"rendered":"https:\/\/www.matterwaveoptics.eu\/?p=730"},"modified":"2021-06-28T17:41:08","modified_gmt":"2021-06-28T17:41:08","slug":"malitesta-marco-distributed-quantum-sensing-with-squeezed-vacuum-light-in-a-configurable-network-of-mach-zehnder-interferometers","status":"publish","type":"post","link":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/fomo2021\/contributed-talks\/fomo2021-abstract\/malitesta-marco-distributed-quantum-sensing-with-squeezed-vacuum-light-in-a-configurable-network-of-mach-zehnder-interferometers\/","title":{"rendered":"Malitesta, Marco — Distributed Quantum Sensing with Squeezed-Vacuum Light in a Configurable Network of Mach-Zehnder Interferometers"},"content":{"rendered":"\n

Mach-Zehnder interferometry using squeezed-vacuum light is an archetype of quantum-enhanced
single-phase sensing. Here we propose and study a direct generalization for the estimation of an
arbitrary number of phase shifts in d \u2265 1 distributed Mach-Zehnder interferometers (MZIs). In this
case, the squeezed-vacuum is split between the d modes of a linear (splitting) network, each output
of the network being one sensing mode of a MZI, the other input being a coherent state. We predict
i) the linear combination of phase shifts that can be estimated with optimal sensitivity, given a
specific splitting network; and ii) the splitting network that allows the estimation of a specific linear
combination of phase shifts with optimal sensitivity. Sub-shot-noise sensitivity up to the Heisenberg
limit is discussed, the multiphase estimation only requiring local photocounting. We show that the
distributed entangled state provides a better scaling of precision with respect to separable strategies.<\/p>\n\n\n\n

Malitesta-Marco-Distributed-Quantum-Sensing-with-Squeezed-Vacuum-Light-in-a-Configurable-Network-of-Mach-Zehnder-Interferometers<\/a>Download<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"

Mach-Zehnder interferometry using squeezed-vacuum light is an archetype of quantum-enhanced
\nsingle-phase sensing. Here we propose and study a direct generalization for the estimation of an
\narbitrary number of phase shifts in d \u2265 1 distributed Mach-Zehnder interferometers (MZIs). In this
\ncase, the squeezed-vacuum is split between the d modes of a linear (splitting) network, each output
\nof the network being one sensing mode of a MZI, the other input being a coherent state. We predict
\ni) the linear combination of phase shifts that can be estimated with optimal sensitivity, given a
\nspecific splitting network; and ii) the splitting network that allows the estimation of a specific linear
\ncombination of phase shifts with optimal sensitivity. Sub-shot-noise sensitivity up to the Heisenberg
\nlimit is discussed, the multiphase estimation only requiring local photocounting. We show that the
\ndistributed entangled state provides a better scaling of precision with respect to separable strategies.<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_crdt_document":"","_uag_custom_page_level_css":"","_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[6],"tags":[],"class_list":["post-730","post","type-post","status-publish","format-standard","hentry","category-fomo2021-abstract"],"jetpack_featured_media_url":"","uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"ashe-slider-full-thumbnail":false,"ashe-full-thumbnail":false,"ashe-list-thumbnail":false,"ashe-grid-thumbnail":false,"ashe-single-navigation":false},"uagb_author_info":{"display_name":"Cretan Matterwaves","author_link":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/author\/bec\/"},"uagb_comment_info":0,"uagb_excerpt":"Mach-Zehnder interferometry using squeezed-vacuum light is an archetype of quantum-enhanced single-phase sensing. Here we propose and study a direct generalization for the estimation of an arbitrary number of phase shifts in d \u2265 1 distributed Mach-Zehnder interferometers (MZIs). In this case, the squeezed-vacuum is split between the d modes of a linear (splitting) network, each…","jetpack_sharing_enabled":true,"publishpress_future_action":{"enabled":false,"date":"2026-07-29 18:47:26","action":"category","newStatus":"draft","terms":[],"taxonomy":"category","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/posts\/730","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/comments?post=730"}],"version-history":[{"count":2,"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/posts\/730\/revisions"}],"predecessor-version":[{"id":733,"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/posts\/730\/revisions\/733"}],"wp:attachment":[{"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/media?parent=730"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/categories?post=730"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.matterwaveoptics.eu\/FOMO2022\/wp-json\/wp\/v2\/tags?post=730"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}