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https://dipositint.ub.edu/dspace/handle/2445/188076
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DC Field | Value | Language |
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dc.contributor.advisor | Usui, Ayaka | - |
dc.contributor.advisor | Juliá-Díaz, Bruno | - |
dc.contributor.author | Gheorghita, Edward | - |
dc.date.accessioned | 2022-07-27T07:18:50Z | - |
dc.date.available | 2022-07-27T07:18:50Z | - |
dc.date.issued | 2022-07 | - |
dc.identifier.uri | http://hdl.handle.net/2445/188076 | - |
dc.description | Màster Oficial de Ciència i Tecnologia Quàntiques / Quantum Science and Technology, Facultat de Física, Universitat de Barcelona. Curs: 2021-2022. Tutors: Ayaka Usui, Bruno Juliá-Díaz | ca |
dc.description.abstract | It is known that a maximally entangled state, GHZ state, is generated by the one-axis twisting Hamiltonian. Recently, it has been numerically shown that a Hamiltonian having neighboring interactions and a field only produces the same dynamics. It is intriguing because it was believed that all-with-all interactions are required for one-axis twisting. The purpose of this work is to reveal how such simple Hamiltonians can show the oneaxis twisting and mimic all-with-all interactions. In particular, we apply the many-body protected manifold technique to the Heisenberg XXX model with a staggered field in attempt to recover all-with-all interactions. We begin with a thorough review of one-axis twisting without and with decoherence. Then, we introduce the many-body protected manifold technique and apply it to the Heisenberg XXZ model, which acquires all-with-all interactions and can generate one-axis twisting. We apply this technique to the Heisenberg XXX model. | ca |
dc.format.extent | 27 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | ca |
dc.rights | cc-by-nc-nd (c) Gheorghita, 2022 | - |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ | * |
dc.source | Màster Oficial - Ciència i Tecnologia Quàntiques / Quantum Science and Technology | - |
dc.subject.classification | Teoria quàntica | - |
dc.subject.classification | Sistemes hamiltonians | - |
dc.subject.classification | Treballs de fi de màster | - |
dc.subject.other | Quantum theory | - |
dc.subject.other | Hamiltonian systems | - |
dc.subject.other | Master's theses | - |
dc.title | One-axis twisting with nearest neighbour interactions | eng |
dc.type | info:eu-repo/semantics/masterThesis | ca |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | ca |
Appears in Collections: | Màster Oficial - Ciència i Tecnologia Quàntiques / Quantum Science and Technology |
Files in This Item:
File | Description | Size | Format | |
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GheorghitaEdwardThesis.pdf | 1.84 MB | Adobe PDF | View/Open |
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