{"id":"https://openalex.org/W1563172883","doi":"https://doi.org/10.1109/acc.2015.7170714","title":"Covariance matrix tracking coherent observers for linear quantum stochastic systems","display_name":"Covariance matrix tracking coherent observers for linear quantum stochastic systems","publication_year":2015,"publication_date":"2015-07-01","ids":{"openalex":"https://openalex.org/W1563172883","doi":"https://doi.org/10.1109/acc.2015.7170714","mag":"1563172883"},"language":"en","primary_location":{"id":"doi:10.1109/acc.2015.7170714","is_oa":false,"landing_page_url":"https://doi.org/10.1109/acc.2015.7170714","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2015 American Control Conference (ACC)","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5068453479","display_name":"Zibo Miao","orcid":"https://orcid.org/0000-0001-9766-7837"},"institutions":[{"id":"https://openalex.org/I4210096034","display_name":"Centre for Quantum Computation and Communication Technology","ror":"https://ror.org/00rnbty21","country_code":"AU","type":"facility","lineage":["https://openalex.org/I1337719021","https://openalex.org/I165143802","https://openalex.org/I2801453606","https://openalex.org/I4210096034","https://openalex.org/I4210132349"]},{"id":"https://openalex.org/I118347636","display_name":"Australian National University","ror":"https://ror.org/019wvm592","country_code":"AU","type":"education","lineage":["https://openalex.org/I118347636"]}],"countries":["AU"],"is_corresponding":true,"raw_author_name":"Zibo Miao","raw_affiliation_strings":["Australian National University, Canberra, ACT, AU","ARC Centre for Quantum Computation and Communication Technology, Research School of Engineering, The Australian National University, Canberra, ACT 2601, Australia"],"affiliations":[{"raw_affiliation_string":"Australian National University, Canberra, ACT, AU","institution_ids":["https://openalex.org/I118347636"]},{"raw_affiliation_string":"ARC Centre for Quantum Computation and Communication Technology, Research School of Engineering, The Australian National University, Canberra, ACT 2601, Australia","institution_ids":["https://openalex.org/I4210096034","https://openalex.org/I118347636"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5037977638","display_name":"Michael Hush","orcid":"https://orcid.org/0000-0002-6464-9234"},"institutions":[{"id":"https://openalex.org/I40053085","display_name":"Australian Defence Force Academy","ror":"https://ror.org/02j5s7g39","country_code":"AU","type":"education","lineage":["https://openalex.org/I31746571","https://openalex.org/I40053085","https://openalex.org/I4394709116"]},{"id":"https://openalex.org/I31746571","display_name":"UNSW Sydney","ror":"https://ror.org/03r8z3t63","country_code":"AU","type":"education","lineage":["https://openalex.org/I31746571"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Michael R. Hush","raw_affiliation_strings":["School of Information Technology and Electrical Engineering, University of New South Wales at the Australian Defence Force Academy, Canberra, ACT, Australia","School of Information Technology and Electrical Engineering, University of New South Wales at the Australian, Defence Force Academy, Canberra ACT 2600, Australia"],"affiliations":[{"raw_affiliation_string":"School of Information Technology and Electrical Engineering, University of New South Wales at the Australian Defence Force Academy, Canberra, ACT, Australia","institution_ids":["https://openalex.org/I40053085","https://openalex.org/I31746571"]},{"raw_affiliation_string":"School of Information Technology and Electrical Engineering, University of New South Wales at the Australian, Defence Force Academy, Canberra ACT 2600, Australia","institution_ids":["https://openalex.org/I31746571"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5066781741","display_name":"M. R. James","orcid":"https://orcid.org/0000-0003-2821-0133"},"institutions":[{"id":"https://openalex.org/I4210096034","display_name":"Centre for Quantum Computation and Communication Technology","ror":"https://ror.org/00rnbty21","country_code":"AU","type":"facility","lineage":["https://openalex.org/I1337719021","https://openalex.org/I165143802","https://openalex.org/I2801453606","https://openalex.org/I4210096034","https://openalex.org/I4210132349"]},{"id":"https://openalex.org/I118347636","display_name":"Australian National University","ror":"https://ror.org/019wvm592","country_code":"AU","type":"education","lineage":["https://openalex.org/I118347636"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Matthew R. James","raw_affiliation_strings":["ARC Centre for Quantum Computation and Communication Technology, Australian national University, Canberra, ACT, Australia","ARC Centre for Quantum Computation and Communication Technology, Research School of Engineering, The Australian National University, Canberra, ACT 2601, Australia"],"affiliations":[{"raw_affiliation_string":"ARC Centre for Quantum Computation and Communication Technology, Australian national University, Canberra, ACT, Australia","institution_ids":["https://openalex.org/I4210096034"]},{"raw_affiliation_string":"ARC Centre for Quantum Computation and Communication Technology, Research School of Engineering, The Australian National University, Canberra, ACT 2601, Australia","institution_ids":["https://openalex.org/I4210096034","https://openalex.org/I118347636"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5068453479"],"corresponding_institution_ids":["https://openalex.org/I118347636","https://openalex.org/I4210096034"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.02023531,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"45","issue":null,"first_page":"74","last_page":"79"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10020","display_name":"Quantum Information and Cryptography","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10020","display_name":"Quantum Information and Cryptography","score":0.9994999766349792,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10622","display_name":"Quantum Mechanics and Applications","score":0.9947999715805054,"subfield":{"id":"https://openalex.org/subfields/3107","display_name":"Atomic and Molecular Physics, and Optics"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10682","display_name":"Quantum Computing Algorithms and Architecture","score":0.9871000051498413,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/quantum-entanglement","display_name":"Quantum entanglement","score":0.680058479309082},{"id":"https://openalex.org/keywords/observer","display_name":"Observer (physics)","score":0.6681957244873047},{"id":"https://openalex.org/keywords/covariance-matrix","display_name":"Covariance matrix","score":0.5737332105636597},{"id":"https://openalex.org/keywords/estimator","display_name":"Estimator","score":0.5116251111030579},{"id":"https://openalex.org/keywords/realization","display_name":"Realization (probability)","score":0.4977765381336212},{"id":"https://openalex.org/keywords/covariance","display_name":"Covariance","score":0.4920189082622528},{"id":"https://openalex.org/keywords/statistical-physics","display_name":"Statistical physics","score":0.46113550662994385},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.45268574357032776},{"id":"https://openalex.org/keywords/quantum-system","display_name":"Quantum system","score":0.44749897718429565},{"id":"https://openalex.org/keywords/quantum","display_name":"Quantum","score":0.44661444425582886},{"id":"https://openalex.org/keywords/control-theory","display_name":"Control theory (sociology)","score":0.4367144703865051},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.3218797445297241},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.31355994939804077},{"id":"https://openalex.org/keywords/quantum-mechanics","display_name":"Quantum mechanics","score":0.2844022810459137},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.19867867231369019},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.1751774251461029},{"id":"https://openalex.org/keywords/control","display_name":"Control (management)","score":0.1501428186893463},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.08831712603569031}],"concepts":[{"id":"https://openalex.org/C121040770","wikidata":"https://www.wikidata.org/wiki/Q215675","display_name":"Quantum entanglement","level":3,"score":0.680058479309082},{"id":"https://openalex.org/C2780704645","wikidata":"https://www.wikidata.org/wiki/Q9251458","display_name":"Observer (physics)","level":2,"score":0.6681957244873047},{"id":"https://openalex.org/C185142706","wikidata":"https://www.wikidata.org/wiki/Q1134404","display_name":"Covariance matrix","level":2,"score":0.5737332105636597},{"id":"https://openalex.org/C185429906","wikidata":"https://www.wikidata.org/wiki/Q1130160","display_name":"Estimator","level":2,"score":0.5116251111030579},{"id":"https://openalex.org/C2781089630","wikidata":"https://www.wikidata.org/wiki/Q21856745","display_name":"Realization (probability)","level":2,"score":0.4977765381336212},{"id":"https://openalex.org/C178650346","wikidata":"https://www.wikidata.org/wiki/Q201984","display_name":"Covariance","level":2,"score":0.4920189082622528},{"id":"https://openalex.org/C121864883","wikidata":"https://www.wikidata.org/wiki/Q677916","display_name":"Statistical physics","level":1,"score":0.46113550662994385},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.45268574357032776},{"id":"https://openalex.org/C2778926657","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum system","level":3,"score":0.44749897718429565},{"id":"https://openalex.org/C84114770","wikidata":"https://www.wikidata.org/wiki/Q46344","display_name":"Quantum","level":2,"score":0.44661444425582886},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.4367144703865051},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.3218797445297241},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.31355994939804077},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.2844022810459137},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.19867867231369019},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.1751774251461029},{"id":"https://openalex.org/C2775924081","wikidata":"https://www.wikidata.org/wiki/Q55608371","display_name":"Control (management)","level":2,"score":0.1501428186893463},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.08831712603569031}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/acc.2015.7170714","is_oa":false,"landing_page_url":"https://doi.org/10.1109/acc.2015.7170714","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2015 American Control Conference (ACC)","raw_type":"proceedings-article"},{"id":"pmh:oai:openresearch-repository.anu.edu.au:1885/102760","is_oa":false,"landing_page_url":"http://hdl.handle.net/1885/102760","pdf_url":null,"source":{"id":"https://openalex.org/S4306402539","display_name":"ANU Open Research (Australian National University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I118347636","host_organization_name":"Australian National University","host_organization_lineage":["https://openalex.org/I118347636"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Proceedings of the American Control Conference","raw_type":"Conference paper"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Affordable and clean energy","id":"https://metadata.un.org/sdg/7","score":0.6000000238418579}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":41,"referenced_works":["https://openalex.org/W1530682388","https://openalex.org/W1581324086","https://openalex.org/W1586251222","https://openalex.org/W1599429027","https://openalex.org/W1792516231","https://openalex.org/W1975763267","https://openalex.org/W1985438284","https://openalex.org/W1987173586","https://openalex.org/W2000271940","https://openalex.org/W2009087153","https://openalex.org/W2022096967","https://openalex.org/W2032085905","https://openalex.org/W2039540991","https://openalex.org/W2040272543","https://openalex.org/W2045689488","https://openalex.org/W2052788241","https://openalex.org/W2053798711","https://openalex.org/W2063531468","https://openalex.org/W2070389945","https://openalex.org/W2070811098","https://openalex.org/W2071818368","https://openalex.org/W2076763215","https://openalex.org/W2084299251","https://openalex.org/W2094990101","https://openalex.org/W2097876164","https://openalex.org/W2107837857","https://openalex.org/W2117302943","https://openalex.org/W2152430211","https://openalex.org/W2244749167","https://openalex.org/W2499754680","https://openalex.org/W2747321858","https://openalex.org/W2962993053","https://openalex.org/W2963143909","https://openalex.org/W3098587343","https://openalex.org/W3106524425","https://openalex.org/W4231495866","https://openalex.org/W4285719527","https://openalex.org/W6635846930","https://openalex.org/W6639305602","https://openalex.org/W6662194615","https://openalex.org/W6743669739"],"related_works":["https://openalex.org/W1964921276","https://openalex.org/W2741523612","https://openalex.org/W2946365274","https://openalex.org/W3104551701","https://openalex.org/W2258058860","https://openalex.org/W2101135880","https://openalex.org/W1489099099","https://openalex.org/W2886934452","https://openalex.org/W1974955043","https://openalex.org/W2749971879"],"abstract_inverted_index":{"It":[0],"is":[1,111,119,148],"becoming":[2],"apparent":[3],"that":[4,90],"coherent":[5,25,34,88,146,161,171],"feedback":[6],"control":[7,172],"of":[8,33,48,55,95,102,108,126,135,140,163],"quantum":[9,35,42,56,104,136],"systems":[10,44],"has":[11,21],"significant":[12],"advantages":[13],"over":[14],"measurement-based":[15],"control,":[16],"but":[17],"not":[18],"much":[19],"progress":[20],"been":[22],"made":[23],"on":[24,169],"estimators.":[26],"In":[27],"our":[28],"previous":[29],"work,":[30],"a":[31,83,103,114,141],"class":[32],"observers":[36,110,128],"was":[37],"developed,":[38],"which":[39],"tracks":[40],"linear":[41],"stochastic":[43],"in":[45,52,78,150],"the":[46,53,92,97,123,133,158],"sense":[47],"mean":[49,60,98,144],"values.":[50],"However,":[51],"majority":[54],"technologies,":[57],"apart":[58],"from":[59],"value":[61],"quantities,":[62],"correlations":[63],"and":[64,75,99,113,116,154],"variances":[65],"are":[66,71],"critical":[67],"elements":[68],"because":[69],"they":[70],"connected":[72],"with":[73,132],"energy":[74],"entanglement.":[76,164],"Therefore,":[77],"this":[79],"paper,":[80],"we":[81,155],"create":[82],"covariance":[84,100],"matrix":[85,101],"tracking":[86,94,145,162],"(CMT)":[87],"observer":[89,147],"enables":[91],"asymptotic":[93],"both":[96],"system.":[105],"The":[106,138],"existence":[107],"CMT":[109,127,142],"analyzed,":[112],"sufficient":[115],"necessary":[117],"condition":[118],"provided":[120],"to":[121,129],"ensure":[122],"physical":[124],"realization":[125],"be":[130],"consistent":[131],"laws":[134],"mechanics.":[137],"performance":[139],"vs.":[143],"compared":[149],"an":[151],"illustrated":[152],"example,":[153],"demonstrate":[156],"for":[157],"first":[159],"time":[160],"These":[165],"results":[166],"shed":[167],"light":[168],"observer-based":[170],"design.":[173]},"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}