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Control and measurement of non-classical properties of cold atomic and optical systems
https://doi.org/10.15102/1394.00001680
https://doi.org/10.15102/1394.000016808dcb99ee-8506-4a4b-9326-2883534f45e4
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Final_Exam_Abstract (42.9 kB)
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| Item type | 学位論文 / Thesis or Dissertation(1) | |||||||
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| PubDate | 2021-01-05 | |||||||
| Title | ||||||||
| Title | 量子系におけるコントロールと測定 | |||||||
| Language | ja | |||||||
| Title | ||||||||
| Title | Control and measurement of non-classical properties of cold atomic and optical systems | |||||||
| Language | en | |||||||
| Language | ||||||||
| Language | eng | |||||||
| Resource Type | ||||||||
| Resource Type Identifier | http://purl.org/coar/resource_type/c_db06 | |||||||
| Resource Type | doctoral thesis | |||||||
| Identifier Registration | ||||||||
| Identifier Registration | 10.15102/1394.00001680 | |||||||
| Identifier Registration Type | JaLC | |||||||
| Access Right | ||||||||
| Access Rights | open access | |||||||
| Access Rights URI | http://purl.org/coar/access_right/c_abf2 | |||||||
| Author |
Usui, Ayaka
× Usui, Ayaka
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| Abstract | ||||||||
| Description Type | Other | |||||||
| Description | I present the work done during my PhD in the field of quantum gases, metrology, and thermodynamics, which aims at revealing and controlling non-classical correlations and features in various systems. First, I have studied two strongly interacting bosons with synthetic spin-orbit coupling. In this work, I have described the ground state beyond the mean-field regime and explored the existence of non-classical correlations. In a second project, I have investigated the dynamical phase transition in a system of cold atoms trapped in one-dimensional optical lattices. This is the first work to study the dynamical phase transition in a continuous model, and I have revealed the relation between the dynamical phase transition and temporal orthogonality. Third, I consider an impurity coupled to a gas in a two-dimensional lattice. This work has explored the dynamics of the impurity and proposed an approach to probe the local excitation spectrum of the gas at the site coupled to the impurity. Next, I present my contribution to a project on Bayesian estimation with continuous-variable systems. I have examined what is the best probe state for heterodyne or homodyne detection to estimate a single parameter. In the last project, I have explored steady states in quantum thermal machines. As dealing with multi-level and larger numbers of systems quickly becomes intractable, I have mapped them to lower-dimensional systems by utilising the idea of virtual qubits so that one can design autonomous quantum machines beyond a few qubits. | |||||||
| Language | en | |||||||
| Exam Date | ||||||||
| 2020-12-10 | ||||||||
| Degree Conferral Date | ||||||||
| Date Granted | 2020-12-31 | |||||||
| Degree | ||||||||
| Degree Name | Doctor of Philosophy | |||||||
| Degree Referral Number | ||||||||
| Dissertation Number | 甲第67号 | |||||||
| Degree Conferrral Institution | ||||||||
| Degree Grantor Name Identifier Scheme | kakenhi | |||||||
| Degree Grantor Name Identifier | 38005 | |||||||
| Degree Grantor Name | Okinawa Institute of Science and Technology Graduate University | |||||||
| Version Format | ||||||||
| Version Type | VoR | |||||||
| Version Type Resource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||
| Copyright Information | ||||||||
| Rights | © 2020 The Author. | |||||||
