{"id":"https://openalex.org/W100346902","doi":null,"title":"State and Parameter Estimation in Quantum Theory","display_name":"State and Parameter Estimation in Quantum Theory","publication_year":2003,"publication_date":"2003-01-01","ids":{"openalex":"https://openalex.org/W100346902","mag":"100346902"},"language":"en","primary_location":{"id":"pmh:oai:kops.uni-konstanz.de:123456789/5224","doi":null,"is_oa":true,"landing_page_url":"http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-10700","pdf_url":"https://kops.uni-konstanz.de/server/api/core/bitstreams/1c021072-013e-4069-bfc3-5da4556c70cf/content","source":{"id":"https://openalex.org/S4306401487","display_name":"KOPS (University of Konstanz)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I189712700","host_organization_name":"University of Konstanz","host_organization_lineage":["https://openalex.org/I189712700"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"doc-type:masterThesis"},"volume":null,"type":"dissertation","indexed_in":[],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://kops.uni-konstanz.de/server/api/core/bitstreams/1c021072-013e-4069-bfc3-5da4556c70cf/content","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5016358651","display_name":"Marcus Kubitzki","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Marcus Kubitzki","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5016358651"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":true,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10020","display_name":"Quantum Information and Cryptography","score":0.9154999852180481,"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":0.9154999852180481,"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":0.0820000022649765,"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":0.0007999999797903001,"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-state-estimation","display_name":"quantum state estimation","score":0.8429999947547913},{"id":"https://openalex.org/keywords/quantum-parameter-estimation","display_name":"quantum parameter estimation","score":0.9169999957084656},{"id":"https://openalex.org/keywords/generalized-quantum-measurements","display_name":"generalized quantum measurements","score":0.9459999799728394},{"id":"https://openalex.org/keywords/fidelity","display_name":"fidelity","score":0.4129999876022339},{"id":"https://openalex.org/keywords/qubits","display_name":"qubits","score":0.6620000004768372},{"id":"https://openalex.org/keywords/unsharp-measurements","display_name":"unsharp measurements","score":0.6769999861717224},{"id":"https://openalex.org/keywords/kraus-operators","display_name":"Kraus operators","score":0.9200000166893005},{"id":"https://openalex.org/keywords/back-action","display_name":"back-action","score":0.7049999833106995},{"id":"https://openalex.org/keywords/prior-information","display_name":"prior information","score":0.7870000004768372},{"id":"https://openalex.org/keywords/quantum-fisher-information","display_name":"quantum Fisher information","score":0.4059999883174896},{"id":"https://openalex.org/keywords/quantum-cramer-rao-bound","display_name":"quantum Cram\u00e9r-Rao bound","score":0.6489999890327454},{"id":"https://openalex.org/keywords/quantum-metrology","display_name":"quantum metrology","score":0.4620000123977661},{"id":"https://openalex.org/keywords/quantum-state-tomography","display_name":"quantum state tomography","score":0.3330000042915344},{"id":"https://openalex.org/keywords/quantum-hypothesis-testing","display_name":"quantum hypothesis testing","score":0.44999998807907104}],"concepts":[{"id":"https://openalex.org/C96250715","wikidata":"https://www.wikidata.org/wiki/Q965330","display_name":"Estimation","level":2,"score":0.5241948962211609},{"id":"https://openalex.org/C48103436","wikidata":"https://www.wikidata.org/wiki/Q599031","display_name":"State (computer science)","level":2,"score":0.44241464138031006},{"id":"https://openalex.org/C121864883","wikidata":"https://www.wikidata.org/wiki/Q677916","display_name":"Statistical physics","level":1,"score":0.37629830837249756},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.36629462242126465},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3393107056617737},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.23514631390571594},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.2052990198135376},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.17228537797927856},{"id":"https://openalex.org/C201995342","wikidata":"https://www.wikidata.org/wiki/Q682496","display_name":"Systems engineering","level":1,"score":0.09443038702011108}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:kops.uni-konstanz.de:123456789/5224","doi":null,"is_oa":true,"landing_page_url":"http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-10700","pdf_url":"https://kops.uni-konstanz.de/server/api/core/bitstreams/1c021072-013e-4069-bfc3-5da4556c70cf/content","source":{"id":"https://openalex.org/S4306401487","display_name":"KOPS (University of Konstanz)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I189712700","host_organization_name":"University of Konstanz","host_organization_lineage":["https://openalex.org/I189712700"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"doc-type:masterThesis"},{"id":"mag:100346902","doi":null,"is_oa":false,"landing_page_url":"https://kops.uni-konstanz.de/bitstream/123456789/5224/1/thesis.pdf","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":{"id":"pmh:oai:kops.uni-konstanz.de:123456789/5224","doi":null,"is_oa":true,"landing_page_url":"http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-10700","pdf_url":"https://kops.uni-konstanz.de/server/api/core/bitstreams/1c021072-013e-4069-bfc3-5da4556c70cf/content","source":{"id":"https://openalex.org/S4306401487","display_name":"KOPS (University of Konstanz)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I189712700","host_organization_name":"University of Konstanz","host_organization_lineage":["https://openalex.org/I189712700"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"doc-type:masterThesis"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W100346902.pdf","grobid_xml":"https://content.openalex.org/works/W100346902.grobid-xml"},"referenced_works_count":27,"referenced_works":["https://openalex.org/W1547322272","https://openalex.org/W1585729574","https://openalex.org/W1677900015","https://openalex.org/W1790859230","https://openalex.org/W1878831326","https://openalex.org/W1965785271","https://openalex.org/W1989197568","https://openalex.org/W2004196735","https://openalex.org/W2006201049","https://openalex.org/W2016356084","https://openalex.org/W2020711801","https://openalex.org/W2025075253","https://openalex.org/W2043733984","https://openalex.org/W2046832898","https://openalex.org/W2049471987","https://openalex.org/W2069753687","https://openalex.org/W2071751144","https://openalex.org/W2075534391","https://openalex.org/W2078691073","https://openalex.org/W2085397031","https://openalex.org/W2086559049","https://openalex.org/W2271095084","https://openalex.org/W2964169140","https://openalex.org/W3003414507","https://openalex.org/W3021492718","https://openalex.org/W3023674338","https://openalex.org/W3143400115"],"related_works":["https://openalex.org/W2960028491","https://openalex.org/W3098695531","https://openalex.org/W2909790406","https://openalex.org/W7100926369","https://openalex.org/W1985682565","https://openalex.org/W7116099089","https://openalex.org/W2125357651","https://openalex.org/W7095945050","https://openalex.org/W1566190027","https://openalex.org/W2300356814"],"abstract_inverted_index":{"Diese":[0,148,370],"Arbeit":[1],"besch\u00e4ftigt":[2],"sich":[3,305],"mit":[4,229,240,364,396],"der":[5,12,30,41,47,66,79,132,295,306,357,366],"Sch\u00e4tzung":[6,310,346,371,450],"von":[7,156,278,311,326,376,394,427],"Parametern":[8],"und":[9,34,46,69,75,88,112,280,302,341],"Zust\u00e4nden":[10],"in":[11,19,64,169,220],"Quantentheorie.":[13],"Die":[14,126,343],"Theorie":[15],"verallgemeinerter":[16],"Quantenmessungen,":[17],"vorgestellt":[18],"Kapitel":[20,32,221],"2,":[21],"bildet":[22],"hierzu":[23],"den":[24,190,214,256,299,337,381,392],"begrifflichen":[25],"Rahmen.":[26],"Der":[27],"erste":[28],"Teil":[29,294],"Arbeit,":[31,296],"3":[33],"4":[35,222],"umfassend,":[36],"untersucht":[37],"die":[38,107,118,121,143,144,154,179,204,234,252,274,288,309,313,314,448],"Balance":[39,109],"zwischen":[40,110],"durch":[42,140],"Messung":[43,76,187],"gewonnenen":[44],"Information":[45,227,265],"hierdurch":[48],"am":[49],"System":[50,58],"verursachten":[51],"St\u00f6rung.":[52],"F\u00fcr":[53,134],"Einzelmessungen":[54],"an":[55,117],"einem":[56],"einzigen":[57],"wird":[59,104,224,363,404],"dieser":[60],"qualitative":[61],"Kompromi\u00df":[62],"quantitativ":[63],"Form":[65],"Fidelities":[67],"F":[68,206],"G":[70],"untersucht,":[71],"insbesondere":[72],"f\u00fcr":[73,237,255,336,422],"Qubits":[74,135,317],"selbiger":[77],"vermittels":[78],"Klasse":[80],"unscharfer":[81,330],"Messungen.":[82],"Sie":[83],"bestehen":[84],"aus":[85,298,356],"kommutierenden":[86],"Effekten":[87],"k\u00f6nnen":[89],"als":[90,251,287,433],"'verschmierte'":[91],"Versionen":[92],"gew\u00f6hnlicher":[93],"hermitescher":[94],"Observablen,":[95],"wie":[96,219],"z.B.":[97],"Energie":[98],"oder":[99,248],"Spin,":[100],"interpretiert":[101],"werden.":[102],"Es":[103,173],"gezeigt,":[105],"da\u00df":[106,176,258,421],"optimale":[108,180],"Informationsgewinn":[111],"St\u00f6rung":[113],"eine":[114,129,151,197,201,269,423],"einfache":[115,152],"Nebenbedingung":[116],"Parameter":[119,338],"liefert,":[120],"diese":[122,226],"unscharfen":[123],"Qubit-Messungen":[124],"charakterisieren.":[125,318],"FG-Ebene":[127],"liefert":[128],"anschauliche":[130],"Darstellung":[131],"Fidelity-Balance.":[133],"kann":[136,196,245,273,418],"sie":[137],"ausgedr\u00fcckt":[138],"werden":[139,333],"jene":[141],"Parameter,":[142],"unscharfe":[145],"Qubit-Messung":[146],"repr\u00e4sentieren.":[147],"Parametrisierung":[149],"enth\u00fcllt":[150],"Struktur,":[153],"minimale":[155,238],"nicht-minimalen":[157,283],"Messungen":[158,163,178,239,284,331],"trennt":[159],"(Kraus":[160],"Operatoren":[161],"nicht-minimaler":[162],"enthalten":[164],"einen":[165],"nicht-trivialen":[166],"unit\u00e4ren":[167],"Anteil":[168],"ihrer":[170],"polaren":[171],"Zerlegung).":[172],"zeigt":[174],"sich,":[175],"nicht-minimale":[177,202],"Fidelity-Balance":[181],"deutlich":[182],"verschlechtern.":[183],"Ist":[184],"vor":[185],"einer":[186,230],"nichts":[188],"\u00fcber":[189,213,261,380,391],"zu":[191,402,412],"sch\u00e4tzenden":[192],"reinen":[193],"Qubit-Zustand":[194],"bekannt,":[195],"unit\u00e4re":[198],"'back-action',":[199],"d.h.":[200,447],"Messung,":[203],"Fidelity":[205,275,289],"nicht":[207,267],"erh\u00f6hen.":[208],"Existiert":[209],"nun":[210],"aber":[211],"Vorinformation":[212,241,260,279,379],"Zustand,":[215],"dann":[216],"verbessert":[217],"-":[218,225],"gezeigt":[223,419],"zusammen":[228],"passend":[231],"gew\u00e4hlten":[232],"'back-action'":[233],"Fidelity,":[235,253],"welche":[236],"berechnet":[242,254],"wurde.":[243],"Letztere":[244],"ihrerseits":[246],"gr\u00f6\u00dfer":[247],"kleiner":[249],"sein":[250],"Fall":[257],"keine":[259],"das":[262,425],"Qubit":[263],"existiert;":[264],"bedeutet":[266],"unbedingt":[268],"h\u00f6here":[270],"Fidelity.":[271],"Interessanterweise":[272],"unter":[276],"Einbeziehung":[277],"diesen":[281],"speziellen":[282],"h\u00f6her":[285],"ausfallen":[286],"ohne":[290],"Vorinformation.":[291],"Im":[292],"zweiten":[293],"bestehend":[297],"Kapiteln":[300],"5":[301],"6,":[303],"verschiebt":[304],"Schwerpunkt":[307],"auf":[308,320,351],"Parametern,":[312],"Dynamik":[315],"eines":[316],"Aufbauend":[319],"f\u00fcheren":[321],"Arbeiten":[322],"[Aud01,Aud02c]":[323],"zur":[324],"Echtzeit-Visualisierung":[325],"Rabi-Oszillationen":[327],"mittels":[328],"Sequenzen":[329],"(N-Serien),":[332],"verschiedene":[334],"Sch\u00e4tzverfahren":[335,385,426],"$|c_1|^2$":[339],"entwickelt":[340],"verglichen.":[342],"urspr\u00fcnglich":[344],"vorgeschlagene":[345],"[Aud01]":[347],"wurde":[348],"im":[349],"Hinblick":[350],"Erwartungstreue":[352],"konstruiert,":[353],"ein":[354,405,410,452],"Kriterium":[355],"klassischen":[358],"Sch\u00e4tztheorie.":[359],"Ein":[360],"zweites":[361],"Verfahren":[362,437],"Hilfe":[365,415],"'maximum":[367,431,444],"likelihood'-Methode":[368],"abgeleitet.":[369],"macht":[372],"jedoch":[373],"keinerlei":[374],"Gebrauch":[375],"eventuell":[377],"vorhandener":[378],"Qubit-Zustand.":[382],"Das":[383],"dritte":[384],"('Bayesian":[386],"estimator')":[387],"bezieht":[388],"solche":[389],"Informationen":[390],"Satz":[393],"Bayes":[395,428],"ein.":[397],"Um":[398],"alle":[399],"Sch\u00e4tzungen":[400],"vergleichen":[401],"k\u00f6nnen,":[403],"mittleres":[406,454],"Fehlerquadrat":[407],"konstruiert":[408],"um":[409],"G\u00fctema\u00df":[411],"erhalten.":[413],"Mit":[414],"dieses":[416],"Ma\u00dfes":[417],"werden,":[420],"N-Serie":[424],"sowohl":[429],"dem":[430,435,443],"likelihood'-":[432],"auch":[434],"urspr\u00fcnglichen":[436],"\u00fcberlegen":[438],"ist.":[439],"Letzteres":[440],"ist":[441],"seinerseits":[442],"likelihood'-Verfahren":[445],"unterlegen,":[446],"urspr\u00fcngliche":[449],"hat":[451],"gr\u00f6\u00dferes":[453],"Fehlerquadrat.":[455]},"counts_by_year":[],"updated_date":"2026-08-22T07:34:49.880490","created_date":"2016-06-24T00:00:00"}
