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Quantum state engineering by steering in the presence of errors

Medina-Guerra, E. ; Kumar, Parveen ; Gornyi, I. V. 1,2; Gefen, Yuval
1 Institut für Theorie der Kondensierten Materie (TKM), Karlsruher Institut für Technologie (KIT)
2 Institut für QuantenMaterialien und Technologien (IQMT), Karlsruher Institut für Technologie (KIT)

Abstract:

Quantum state engineering plays a vital role in various applications in the field of quantum information. Different strategies, including drive-and-dissipation, adiabatic cooling, and measurement-based steering, have been proposed for state generation and manipulation, each with its upsides and downsides. Here, we address a class of measurement-based state engineering protocols where a sequence of generalized measurements is employed to steer a quantum system toward a desired (pure or mixed) target state. Previously studied measurement-based protocols relied on idealized procedures and avoided exploration of the effects of various errors stemming from imperfections of experimental realizations and external noise. We employ the quantum trajectory formalism to provide a detailed analysis of the robustness of these steering protocols against multiple classes of errors. We study a set of realistic errors that can be classified as dynamic or static, depending on whether they remain unchanged while running the protocol. More specifically, we investigate the impact of the erroneous choice of detector-system coupling, erroneous re-initialization of the detector state following a measurement step, fluctuating steering directions, and environmentally induced errors in the detector-system interaction. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000171391
Veröffentlicht am 06.06.2024
Originalveröffentlichung
DOI: 10.1103/PhysRevResearch.6.023159
Scopus
Zitationen: 2
Dimensions
Zitationen: 2
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für QuantenMaterialien und Technologien (IQMT)
Institut für Theorie der Kondensierten Materie (TKM)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 05.2024
Sprache Englisch
Identifikator ISSN: 2643-1564
KITopen-ID: 1000171391
HGF-Programm 47.11.03 (POF IV, LK 01) Quantum Nanoscience
Erschienen in Physical Review Research
Verlag American Physical Society (APS)
Band 6
Heft 2
Seiten Art.-Nr.: 023159
Vorab online veröffentlicht am 13.05.2024
Nachgewiesen in Dimensions
Scopus
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