{"id":{"repo_id":"strathclyde","oai_identifier":"oai:strathclyde:0v838062b"},"canonical_url":"https://search.dev.ndltd.org/etd/strathclyde/oai:strathclyde:0v838062b","repository":{"repo_id":"strathclyde","name":"University of Strathclyde","base_url":"https://stax.strath.ac.uk/catalog/oai"},"display":{"title":"A tuneable quantum gas for matter wave interferometry and soliton experiments","abstract":"The thesis reports on two strands of experiments in which we employ Bose-Einstein condensates of caesium atoms. Caesium provides favourable scattering properties due to a rich spectrum of magnetic Feshbach resonances at low fields. In particular, we take advantage of the tunability of the interaction strength to implement experiments to study matter-wave interferometry and solitons.;In a first series of experiments, we employ a magnetic levitation scheme and the tunability of caesium BEC to measure micro-g accelerations by using atomic interferometry, demonstrating free-evolution times of 1 s. We analyse the intrinsic effects of the curvature of our force field due to the magnetic levitation, and we observe the effects of a phase-shifting element in the interferometer paths.;In the second series of experiments, we exploit the tunability of our Bose-Einstein condensate to generate bright matter-wave solitons in quasi-1D geometry.We study the fundamental breathing mode frequency of a single matter-wave soliton by measuring its oscillation frequency as a function of the atom number and confinement strength and we observe signatures of the creation of secondorder solitons.;Aside from introducing some general concepts of ultra-cold atomic collisions and BECs, I also present a brief overview of the experimental apparatus. This includes details of the vacuum setup, laser cooling, magnetic field coils and diagnostic procedures, and sequence for generating BECs of caesium atoms.","abstract_html":"The thesis reports on two strands of experiments in which we employ Bose-Einstein condensates of caesium atoms. Caesium provides favourable scattering properties due to a rich spectrum of magnetic Feshbach resonances at low fields. In particular, we take advantage of the tunability of the interaction strength to implement experiments to study matter-wave interferometry and solitons.;In a first series of experiments, we employ a magnetic levitation scheme and the tunability of caesium BEC to measure micro-g accelerations by using atomic interferometry, demonstrating free-evolution times of 1 s. We analyse the intrinsic effects of the curvature of our force field due to the magnetic levitation, and we observe the effects of a phase-shifting element in the interferometer paths.;In the second series of experiments, we exploit the tunability of our Bose-Einstein condensate to generate bright matter-wave solitons in quasi-1D geometry.We study the fundamental breathing mode frequency of a single matter-wave soliton by measuring its oscillation frequency as a function of the atom number and confinement strength and we observe signatures of the creation of secondorder solitons.;Aside from introducing some general concepts of ultra-cold atomic collisions and BECs, I also present a brief overview of the experimental apparatus. This includes details of the vacuum setup, laser cooling, magnetic field coils and diagnostic procedures, and sequence for generating BECs of caesium atoms.","abstract_has_math":false,"creators":["Di Carli, Andrea"],"institution":"University of Strathclyde","degree_name":"phd","degree_level":"doctoral-pg","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Haller, Elmar","Kuhr, Stefan"],"committee_chairs":[],"committee_members":[],"year":2020,"date_issued":"2020","date_published":"2020","updated_at":"2026-07-24T04:48:38Z","subjects":[],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier.doi","label":"DOI","values":["10.48730/m8xh-4d15"],"render_values":[{"text":"10.48730/m8xh-4d15","href":"https://doi.org/10.48730/m8xh-4d15","code":true}]},{"key":"dc:identifier","label":"Identifier","values":["T15691"],"render_values":[{"text":"T15691","href":null,"code":true}]},{"key":"dc:creator.authoridentifier","label":"Author Identifier","values":["201584876"],"render_values":[{"text":"201584876","href":null,"code":true}]}]},"links":{"outbound_url":"https://stax.strath.ac.uk/concern/theses/0v838062b","outbound_label":"Repository record","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Haller, Elmar","Kuhr, Stefan"]},{"key":"dc:creator","label":"Author","values":["Di Carli, Andrea"]},{"key":"dc:creator.authoridentifier","label":"Author Identifier","values":["201584876"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2020"]},{"key":"dc:date.issued","label":"Date","values":["2020"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Department of Physics","Experimental Quantum Optics and Photonics Group"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["University of Strathclyde"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["doctoral-pg"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["phd"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["T15691"]},{"key":"dc:identifier.doi","label":"DOI","values":["10.48730/m8xh-4d15"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://stax.strath.ac.uk/concern/theses/0v838062b"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["The thesis reports on two strands of experiments in which we employ Bose-Einstein condensates of caesium atoms. Caesium provides favourable scattering properties due to a rich spectrum of magnetic Feshbach resonances at low fields. In particular, we take advantage of the tunability of the interaction strength to implement experiments to study matter-wave interferometry and solitons.;In a first series of experiments, we employ a magnetic levitation scheme and the tunability of caesium BEC to measure micro-g accelerations by using atomic interferometry, demonstrating free-evolution times of 1 s. We analyse the intrinsic effects of the curvature of our force field due to the magnetic levitation, and we observe the effects of a phase-shifting element in the interferometer paths.;In the second series of experiments, we exploit the tunability of our Bose-Einstein condensate to generate bright matter-wave solitons in quasi-1D geometry.We study the fundamental breathing mode frequency of a single matter-wave soliton by measuring its oscillation frequency as a function of the atom number and confinement strength and we observe signatures of the creation of secondorder solitons.;Aside from introducing some general concepts of ultra-cold atomic collisions and BECs, I also present a brief overview of the experimental apparatus. This includes details of the vacuum setup, laser cooling, magnetic field coils and diagnostic procedures, and sequence for generating BECs of caesium atoms."]},{"key":"dc:description.abstract","label":"Abstract","values":["The thesis reports on two strands of experiments in which we employ Bose-Einstein condensates of caesium atoms. Caesium provides favourable scattering properties due to a rich spectrum of magnetic Feshbach resonances at low fields. In particular, we take advantage of the tunability of the interaction strength to implement experiments to study matter-wave interferometry and solitons.;In a first series of experiments, we employ a magnetic levitation scheme and the tunability of caesium BEC to measure micro-g accelerations by using atomic interferometry, demonstrating free-evolution times of 1 s. We analyse the intrinsic effects of the curvature of our force field due to the magnetic levitation, and we observe the effects of a phase-shifting element in the interferometer paths.;In the second series of experiments, we exploit the tunability of our Bose-Einstein condensate to generate bright matter-wave solitons in quasi-1D geometry.We study the fundamental breathing mode frequency of a single matter-wave soliton by measuring its oscillation frequency as a function of the atom number and confinement strength and we observe signatures of the creation of secondorder solitons.;Aside from introducing some general concepts of ultra-cold atomic collisions and BECs, I also present a brief overview of the experimental apparatus. This includes details of the vacuum setup, laser cooling, magnetic field coils and diagnostic procedures, and sequence for generating BECs of caesium atoms."]},{"key":"dc:title","label":"Title","values":["A tuneable quantum gas for matter wave interferometry and soliton experiments"]}]}],"canonical_facts":{"dc:contributor.advisor":["Haller, Elmar","Kuhr, Stefan"],"dc:creator":["Di Carli, Andrea"],"dc:creator.authoridentifier":["201584876"],"dc:date":["2020"],"dc:date.issued":["2020"],"dc:description":["The thesis reports on two strands of experiments in which we employ Bose-Einstein condensates of caesium atoms. Caesium provides favourable scattering properties due to a rich spectrum of magnetic Feshbach resonances at low fields. In particular, we take advantage of the tunability of the interaction strength to implement experiments to study matter-wave interferometry and solitons.;In a first series of experiments, we employ a magnetic levitation scheme and the tunability of caesium BEC to measure micro-g accelerations by using atomic interferometry, demonstrating free-evolution times of 1 s. We analyse the intrinsic effects of the curvature of our force field due to the magnetic levitation, and we observe the effects of a phase-shifting element in the interferometer paths.;In the second series of experiments, we exploit the tunability of our Bose-Einstein condensate to generate bright matter-wave solitons in quasi-1D geometry.We study the fundamental breathing mode frequency of a single matter-wave soliton by measuring its oscillation frequency as a function of the atom number and confinement strength and we observe signatures of the creation of secondorder solitons.;Aside from introducing some general concepts of ultra-cold atomic collisions and BECs, I also present a brief overview of the experimental apparatus. This includes details of the vacuum setup, laser cooling, magnetic field coils and diagnostic procedures, and sequence for generating BECs of caesium atoms."],"dc:description.abstract":["The thesis reports on two strands of experiments in which we employ Bose-Einstein condensates of caesium atoms. Caesium provides favourable scattering properties due to a rich spectrum of magnetic Feshbach resonances at low fields. In particular, we take advantage of the tunability of the interaction strength to implement experiments to study matter-wave interferometry and solitons.;In a first series of experiments, we employ a magnetic levitation scheme and the tunability of caesium BEC to measure micro-g accelerations by using atomic interferometry, demonstrating free-evolution times of 1 s. We analyse the intrinsic effects of the curvature of our force field due to the magnetic levitation, and we observe the effects of a phase-shifting element in the interferometer paths.;In the second series of experiments, we exploit the tunability of our Bose-Einstein condensate to generate bright matter-wave solitons in quasi-1D geometry.We study the fundamental breathing mode frequency of a single matter-wave soliton by measuring its oscillation frequency as a function of the atom number and confinement strength and we observe signatures of the creation of secondorder solitons.;Aside from introducing some general concepts of ultra-cold atomic collisions and BECs, I also present a brief overview of the experimental apparatus. This includes details of the vacuum setup, laser cooling, magnetic field coils and diagnostic procedures, and sequence for generating BECs of caesium atoms."],"dc:identifier":["T15691"],"dc:identifier.doi":["10.48730/m8xh-4d15"],"dc:identifier.uri":["https://stax.strath.ac.uk/concern/theses/0v838062b"],"dc:publisher.department":["Department of Physics","Experimental Quantum Optics and Photonics Group"],"dc:publisher.institution":["University of Strathclyde"],"dc:title":["A tuneable quantum gas for matter wave interferometry and soliton experiments"],"dc:type.qualificationlevel":["doctoral-pg"],"dc:type.qualificationname":["phd"]},"updated_at":"2026-07-24T04:48:38Z"}