{"created":"2023-06-26T11:02:01.300142+00:00","id":2786,"links":{},"metadata":{"_buckets":{"deposit":"d5b49310-a48d-44cf-82fd-619561ed87be"},"_deposit":{"created_by":22,"id":"2786","owners":[22],"pid":{"revision_id":0,"type":"depid","value":"2786"},"status":"published"},"_oai":{"id":"oai:oist.repo.nii.ac.jp:00002786","sets":["7:235"]},"author_link":[],"item_10006_creator_3":{"attribute_name":"Author","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Keller, Tim","creatorNameLang":"en"}]}]},"item_10006_date_granted_11":{"attribute_name":"Degree Conferral Date","attribute_value_mlt":[{"subitem_dategranted":"2022-08-31"}]},"item_10006_degree_grantor_9":{"attribute_name":"Degree Conferrral Institution","attribute_value_mlt":[{"subitem_degreegrantor":[{"subitem_degreegrantor_name":"Okinawa Institute of Science and Technology Graduate University"}],"subitem_degreegrantor_identifier":[{"subitem_degreegrantor_identifier_name":"38005","subitem_degreegrantor_identifier_scheme":"kakenhi"}]}]},"item_10006_degree_name_8":{"attribute_name":"Degree","attribute_value_mlt":[{"subitem_degreename":"Doctor of Philosophy"}]},"item_10006_description_7":{"attribute_name":"Abstract","attribute_value_mlt":[{"subitem_description":"In this thesis, I present two studies on controlling the state and properties of both single-species and composite quantum gases by tuning the various interaction strengths. In the first work, I derive a shortcut to adiabaticity (STA) for tuning a Feshbach resonance in repulsively interacting Bose-Einstein condensates (BECs) in the ThomasFermi regime. This shortcut mimics an adiabatic evolution and allows one to compress and expand a BEC without friction within an almost arbitrarily short time interval. I then use this technique to show how it can boost the performance of the so-called Feshbach quantum engine and also determine its limits and the instabilities it can lead to. The first part is complemented by a study demonstrating the general ineffectiveness of STAs as a tool to increase the attainable precision in critical quantum metrology at the example of two critical toy models. In the second part, I show that a strongly correlated one-dimensional quantum gas in the Tonks-Girardeau (TG) limit that is immersed into a BEC can undergo a transition to a crystal-like insulator state without any externally imposed lattice potential. I develop a model that accurately describes the system in the pinned insulator state, even if the TG gas has a finite temperature. Additionally, I study the superfluid state that can persist in the gas for finite interactions away from the TG limit and uncover the full phase diagram of the system.","subitem_description_type":"Other"}]},"item_10006_dissertation_number_12":{"attribute_name":"Degree Referral Number","attribute_value_mlt":[{"subitem_dissertationnumber":"甲第100号"}]},"item_10006_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.15102/1394.00002519","subitem_identifier_reg_type":"JaLC"}]},"item_10006_rights_13":{"attribute_name":"Copyright Information","attribute_value_mlt":[{"subitem_rights":"© 2022 The Author."}]},"item_10006_text_24":{"attribute_name":"Exam Date","attribute_value_mlt":[{"subitem_text_value":"2022-08-04"}]},"item_10006_version_type_18":{"attribute_name":"Version Format","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2022-09-16"}],"displaytype":"detail","filename":"TimKeller-ThesisFullText.pdf","filesize":[{"value":"3.3 MB"}],"format":"application/pdf","licensefree":"CC BY 4.0\nCreative Commons Attribution 4.0 International (https://creativecommons.org/licenses/by/4.0/)","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"TimKeller-ThesisFullText","objectType":"fulltext","url":"https://oist.repo.nii.ac.jp/record/2786/files/TimKeller-ThesisFullText.pdf"},"version_id":"cefedefe-383b-4d5b-8956-0b0dea5ee0e0"},{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2022-09-16"}],"displaytype":"detail","filename":"TimKeller-FinalExamAbstract.pdf","filesize":[{"value":"42.9 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"TimKeller-FinalExamAbstract","objectType":"abstract","url":"https://oist.repo.nii.ac.jp/record/2786/files/TimKeller-FinalExamAbstract.pdf"},"version_id":"4872ae56-5965-43c4-8daf-20e593ba18ce"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"doctoral thesis","resourceuri":"http://purl.org/coar/resource_type/c_db06"}]},"item_title":"相互作用する量子気体における超流動状態および絶縁状態の制御","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"相互作用する量子気体における超流動状態および絶縁状態の制御","subitem_title_language":"ja"},{"subitem_title":"Controlling Superfluid and Insulating States in Interacting Quantum Gases","subitem_title_language":"en"}]},"item_type_id":"10006","owner":"22","path":["235"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2022-09-16"},"publish_date":"2022-09-16","publish_status":"0","recid":"2786","relation_version_is_last":true,"title":["相互作用する量子気体における超流動状態および絶縁状態の制御"],"weko_creator_id":"22","weko_shared_id":-1},"updated":"2023-09-01T02:33:09.338904+00:00"}