{"id":"https://openalex.org/W1674633367","doi":null,"title":"Measures of Nonclassical Correlations and Quantum-Enhanced Interferometry","display_name":"Measures of Nonclassical Correlations and Quantum-Enhanced Interferometry","publication_year":2015,"publication_date":"2015-01-01","ids":{"openalex":"https://openalex.org/W1674633367","mag":"1674633367"},"language":"en","primary_location":{"id":"pmh:oai:digitalrepository.unm.edu:phyc_etds-1034","doi":null,"is_oa":false,"landing_page_url":"https://digitalrepository.unm.edu/phyc_etds/35","pdf_url":null,"source":{"id":"https://openalex.org/S4377196368","display_name":"UNM\u2019s Digital Repository (University of New Mexico)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I169521973","host_organization_name":"University of New Mexico","host_organization_lineage":["https://openalex.org/I169521973"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Physics & Astronomy ETDs","raw_type":"text"},"volume":null,"type":"article","indexed_in":[],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":null,"display_name":"Matthias Lang","orcid":"https://orcid.org/0000-0002-0322-5876","observed_orcids":["https://orcid.org/0000-0002-0322-5876"]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Matthias Lang","raw_affiliation_strings":[],"raw_orcid":"https://orcid.org/0000-0002-0322-5876","affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.03340542,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"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":0.9916999936103821,"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":0.9916999936103821,"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":0.0071000000461936,"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/T11414","display_name":"Quantum optics and atomic interactions","score":0.0003000000142492354,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/nonclassical-correlations","display_name":"nonclassical correlations","score":0.9049999713897705},{"id":"https://openalex.org/keywords/entanglement","display_name":"entanglement","score":0.6790000200271606},{"id":"https://openalex.org/keywords/quantum-discord","display_name":"quantum discord","score":0.8669999837875366},{"id":"https://openalex.org/keywords/bell-diagonal-states","display_name":"Bell-diagonal states","score":0.8489999771118164},{"id":"https://openalex.org/keywords/two-qubit-states","display_name":"two-qubit states","score":0.75},{"id":"https://openalex.org/keywords/decoherence","display_name":"decoherence","score":0.8349999785423279},{"id":"https://openalex.org/keywords/quantum-enhanced-interferometry","display_name":"quantum-enhanced interferometry","score":0.8579999804496765},{"id":"https://openalex.org/keywords/squeezed-vacuum","display_name":"squeezed vacuum","score":0.8349999785423279},{"id":"https://openalex.org/keywords/quantum-cramer-rao-bound","display_name":"quantum Cram\u00e9r-Rao bound","score":0.949999988079071},{"id":"https://openalex.org/keywords/phase-sensitivity","display_name":"phase sensitivity","score":0.8550000190734863},{"id":"https://openalex.org/keywords/nonclassical-light","display_name":"nonclassical light","score":0.6620000004768372},{"id":"https://openalex.org/keywords/beam-splitter","display_name":"beam splitter","score":0.47099998593330383},{"id":"https://openalex.org/keywords/quantum-metrology","display_name":"quantum metrology","score":0.45399999618530273}],"concepts":[{"id":"https://openalex.org/C121040770","wikidata":"https://www.wikidata.org/wiki/Q215675","display_name":"Quantum entanglement","level":3,"score":0.7764405608177185},{"id":"https://openalex.org/C203087015","wikidata":"https://www.wikidata.org/wiki/Q378201","display_name":"Qubit","level":3,"score":0.6010953783988953},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.5680121779441833},{"id":"https://openalex.org/C122527463","wikidata":"https://www.wikidata.org/wiki/Q578430","display_name":"Quantum decoherence","level":3,"score":0.5157318711280823},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.5080106258392334},{"id":"https://openalex.org/C130367717","wikidata":"https://www.wikidata.org/wiki/Q189791","display_name":"Diagonal","level":2,"score":0.5037679076194763},{"id":"https://openalex.org/C2780009758","wikidata":"https://www.wikidata.org/wiki/Q6804172","display_name":"Measure (data warehouse)","level":2,"score":0.5028404593467712},{"id":"https://openalex.org/C121864883","wikidata":"https://www.wikidata.org/wiki/Q677916","display_name":"Statistical physics","level":1,"score":0.5025475025177002},{"id":"https://openalex.org/C198377831","wikidata":"https://www.wikidata.org/wiki/Q7269027","display_name":"Quantum correlation","level":5,"score":0.4838891923427582},{"id":"https://openalex.org/C48103436","wikidata":"https://www.wikidata.org/wiki/Q599031","display_name":"State (computer science)","level":2,"score":0.4692685008049011},{"id":"https://openalex.org/C84114770","wikidata":"https://www.wikidata.org/wiki/Q46344","display_name":"Quantum","level":2,"score":0.4477361738681793},{"id":"https://openalex.org/C159317903","wikidata":"https://www.wikidata.org/wiki/Q3198","display_name":"Photon","level":2,"score":0.44498562812805176},{"id":"https://openalex.org/C15706264","wikidata":"https://www.wikidata.org/wiki/Q230883","display_name":"Quantum state","level":3,"score":0.43430736660957336},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.42485517263412476},{"id":"https://openalex.org/C95013731","wikidata":"https://www.wikidata.org/wiki/Q7269071","display_name":"Quantum metrology","level":5,"score":0.4238203763961792},{"id":"https://openalex.org/C139356082","wikidata":"https://www.wikidata.org/wiki/Q7269038","display_name":"Quantum discord","level":4,"score":0.37616515159606934},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.15292194485664368},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.09136316180229187},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"pmh:oai:digitalrepository.unm.edu:phyc_etds-1034","doi":null,"is_oa":false,"landing_page_url":"https://digitalrepository.unm.edu/phyc_etds/35","pdf_url":null,"source":{"id":"https://openalex.org/S4377196368","display_name":"UNM\u2019s Digital Repository (University of New Mexico)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I169521973","host_organization_name":"University of New Mexico","host_organization_lineage":["https://openalex.org/I169521973"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Physics & Astronomy ETDs","raw_type":"text"},{"id":"mag:1674633367","doi":null,"is_oa":false,"landing_page_url":"http://repository.unm.edu/handle/1928/30398","pdf_url":null,"source":{"id":"https://openalex.org/S4306522422","display_name":"PhDT","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"PhDT","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":36,"referenced_works":["https://openalex.org/W143616630","https://openalex.org/W1529902739","https://openalex.org/W1571385165","https://openalex.org/W1582199714","https://openalex.org/W1584988113","https://openalex.org/W1631356911","https://openalex.org/W1964419199","https://openalex.org/W1980542961","https://openalex.org/W2010683218","https://openalex.org/W2023839221","https://openalex.org/W2026428257","https://openalex.org/W2029116470","https://openalex.org/W2029197621","https://openalex.org/W2030239805","https://openalex.org/W2038645424","https://openalex.org/W2047139008","https://openalex.org/W2051618454","https://openalex.org/W2051869207","https://openalex.org/W2062292260","https://openalex.org/W2065645751","https://openalex.org/W2068967633","https://openalex.org/W2074638350","https://openalex.org/W2082014836","https://openalex.org/W2092986657","https://openalex.org/W2099111195","https://openalex.org/W2101272603","https://openalex.org/W2119401520","https://openalex.org/W2147277594","https://openalex.org/W2152231616","https://openalex.org/W2163036762","https://openalex.org/W2272790570","https://openalex.org/W2318703826","https://openalex.org/W2798456356","https://openalex.org/W3101503429","https://openalex.org/W3103626587","https://openalex.org/W3106344180"],"related_works":["https://openalex.org/W2094090098","https://openalex.org/W4298077150","https://openalex.org/W4303453980","https://openalex.org/W2625969382","https://openalex.org/W6940789939","https://openalex.org/W2108468083","https://openalex.org/W7097063901","https://openalex.org/W1597018788","https://openalex.org/W2014799111","https://openalex.org/W7002388213"],"abstract_inverted_index":{"In":[0,186],"the":[1,27,35,43,65,77,86,105,125,132,147,177,187,225,230,236,244,257,264,272,276,292,296,303,306,310,322,348,358,364,368,373,407,417,425,430,435],"first":[2],"part":[3,189],"of":[4,13,48,64,68,76,84,107,128,131,146,149,160,176,201,247,299,321,411,420],"this":[5,154,249],"dissertation":[6],"a":[7,30,118,143,241,282,318,327,331,382,388,400,421],"framework":[8,137],"for":[9,88,110,138,153,267,280,381,387,403,409,416],"categorizing":[10],"entropic":[11,32,49],"measures":[12,23,67,79,87,98,134,180],"nonclassical":[14,69,199],"correlations":[15,70],"in":[16,120,158,253],"bipartite":[17],"quantum":[18,31,90,277],"states":[19,91,109,200,380],"is":[20,229,263,286,317,330,398,414,427],"presented.":[21,93],"The":[22,166,284],"are":[24,51,58,80,92,181],"based":[25],"on":[26,42,243,295],"difference":[28],"between":[29],"quantity":[33,38],"and":[34,53,82,130,151,223,386],"corresponding":[36],"classical":[37],"obtained":[39],"from":[40,100,135,438],"measurements":[41],"two":[44,111,193,323,365],"systems.":[45],"Three":[46],"types":[47],"quantities":[50],"used,":[52],"three":[54,121],"different":[55],"measurement":[56],"strategies":[57],"applied":[59],"to":[60,104,172,203,233,255,309,338,347,429],"these":[61,97,412],"quantities.":[62],"Many":[63],"resulting":[66],"have":[71],"been":[72],"proposed":[73,178],"previously.":[74],"Properties":[75],"various":[78],"explored,":[81],"results":[83,394],"evaluating":[85],"two-qubit":[89],"To":[94],"demonstrate":[95],"how":[96,171],"differ":[99],"entanglement":[101,129,150,397],"we":[102,190,208,290],"move":[103],"set":[106],"Bell-diagonal":[108,139],"qubits,":[112],"which":[113],"can":[114,251],"be":[115],"depicted":[116],"as":[117,355],"tetrahedron":[119],"dimensions.":[122],"We":[123,270,377],"consider":[124,209],"level":[126],"surfaces":[127],"correlation":[133,179],"our":[136],"states.":[140],"This":[141,261],"provides":[142],"complete":[144],"picture":[145],"structure":[148],"discord":[152],"simple":[155],"case":[156,419],"and,":[157],"particular,":[159],"their":[161,205],"nonanalytic":[162],"behavior":[163],"under":[164],"decoherence.":[165],"pictorial":[167],"approach":[168],"also":[169],"indicates":[170],"show":[173],"that":[174,197,305,396],"all":[175],"neither":[182],"convex":[183],"nor":[184],"concave.":[185],"second":[188,237],"look":[191],"at":[192],"practical":[194,265],"interferometric":[195],"setups":[196,413],"use":[198],"light":[202,215],"enhance":[204],"performance.":[206],"First":[207],"an":[210,300,340],"interferometer":[211,436],"powered":[212],"by":[213,274],"laser":[214],"(a":[216],"coherent":[217],"state)":[218],"into":[219,235,363],"one":[220,335,351],"input":[221,238,308,324,339,357],"port":[222],"ask":[224],"following":[226],"question:":[227],"what":[228],"best":[231],"state":[232,250,307,320,329,344,359],"inject":[234],"port,":[239],"given":[240,302],"constraint":[242,304],"mean":[245,390],"number":[246,385],"photons":[248],"carry,":[252],"order":[254],"optimize":[256],"interferometer's":[258,311],"phase":[259,297],"sensitivity?":[260],"question":[262,266,273],"high-sensitivity":[268],"interferometry.":[269,405],"answer":[271,285],"considering":[275],"Cram\\'er-Rao":[278],"bound":[279],"such":[281],"setup.":[283],"squeezed":[287],"vacuum.":[288],"Then":[289,424],"analyze":[291],"ultimate":[293],"bounds":[294],"sensitivity":[298],"interferometer,":[301],"initial":[312],"50:50":[313],"beam":[314,349,369,374],"splitter":[315,375],"B":[316],"product":[319,328],"modes.":[325],"Requiring":[326],"natural":[332],"restriction:":[333],"if":[334],"were":[336],"allowed":[337],"arbitrary,":[341],"entangled":[342],"two-mode":[343],"$|\\Xi":[345],"\\rangle$":[346,361],"splitter,":[350,370],"could":[352],"generally":[353],"just":[354],"easily":[356],"$B|\\Xi":[360],"directly":[362],"modes":[366],"after":[367],"thus":[371],"rendering":[372],"unnecessary.":[376],"find":[378],"optimal":[379],"fixed":[383,389],"photon":[384,391,439],"number.":[392],"Our":[393],"indicate":[395],"not":[399],"crucial":[401],"resource":[402],"quantum-enhanced":[404],"Initially":[406],"analysis":[408,426],"both":[410],"performed":[415],"idealized":[418],"lossless":[422],"interferometer.":[423],"extended":[428],"more":[431],"realistic":[432],"scenario":[433],"where":[434],"suffers":[437],"losses.":[440]},"counts_by_year":[],"updated_date":"2026-10-27T15:51:10.671819","created_date":"2016-06-24T00:00:00"}
