Ultimate precision of direct tomography of wave functions
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Xuan-Hoai Thi Nguyen | - |
dc.contributor.author | Choi, Mahn-Soo | - |
dc.date.accessioned | 2021-11-17T12:40:16Z | - |
dc.date.available | 2021-11-17T12:40:16Z | - |
dc.date.created | 2021-08-30 | - |
dc.date.issued | 2021-07 | - |
dc.identifier.issn | 1570-0755 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/127752 | - |
dc.description.abstract | In contrast to the standard quantum state tomography, the direct tomography seeks a direct access to the complex values of the wave function at particular positions. Originally put forward as a special case of weak measurement, it has been extended to arbitrary measurement setup. We generalize the idea of "quantum metrology," where a real-valued phase is estimated, to the estimation of complex-valued phase. We show that it enables to identify the optimal measurements and investigate the fundamental precision limit of the direct tomography. We propose a few experimentally feasible examples of direct tomography schemes and, based on the complex phase estimation formalism, demonstrate that direct tomography can reach the Heisenberg limit. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | SPRINGER | - |
dc.title | Ultimate precision of direct tomography of wave functions | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Choi, Mahn-Soo | - |
dc.identifier.doi | 10.1007/s11128-021-03167-0 | - |
dc.identifier.scopusid | 2-s2.0-85109107329 | - |
dc.identifier.wosid | 000668904400004 | - |
dc.identifier.bibliographicCitation | QUANTUM INFORMATION PROCESSING, v.20, no.7 | - |
dc.relation.isPartOf | QUANTUM INFORMATION PROCESSING | - |
dc.citation.title | QUANTUM INFORMATION PROCESSING | - |
dc.citation.volume | 20 | - |
dc.citation.number | 7 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Quantum Science & Technology | - |
dc.relation.journalWebOfScienceCategory | Physics, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Mathematical | - |
dc.subject.keywordAuthor | Tomography | - |
dc.subject.keywordAuthor | Quantum metrology | - |
dc.subject.keywordAuthor | Heisenberg limit | - |
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