التفاصيل البيبلوغرافية
| العنوان: |
Towards a quantum simulator emulating the electron-phonon interaction |
| المؤلفون: |
Mascaró Burguera, Lucas |
| المساهمون: |
Universitat Politècnica de Catalunya. Departament de Física, Institut de Ciències Fotòniques (ICFO), Massignan, Pietro Alberto, Bachtold, Adrian, Forstner, Stefan |
| بيانات النشر: |
Universitat Politècnica de Catalunya |
| سنة النشر: |
2023 |
| المجموعة: |
Universitat Politècnica de Catalunya, BarcelonaTech: UPCommons - Global access to UPC knowledge |
| مصطلحات موضوعية: |
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació, Àrees temàtiques de la UPC::Física::Mecànica quàntica, Carbon nanotubes, Quantum dots, Nanotechnology, electromechanics, quantum simulators, Nanotubs de carbon, Punts quàntics, Nanotecnologia |
| الوصف: |
The interaction between electrons and phonons lies behind a plethora of exotic physical phenomena, from Mott insulators and ferromagnetism to superconductivity. This interaction is really complex, and classical simulation methods fall short. Here is where analog quantum simulators come in. One can take advantage of the outstanding mechanical and electronic properties of carbon nanotubes to couple their electronic degrees of freedom to their mechanical modes. This platform would allow for the first realization of an analog quantum simulator for the electron-phonon interaction, effectively realising a Hubbard Hamiltonian. Quantum dots are to be electrostatically defined in a carbon nanotube, and the electronic states are to be coupled to the mechanical modes. The realization of such a simulator requires extremely clean suspended semiconducting nanotubes, high coupling and fast and sensitive readout for the interdot transitions. This work presents a fabrication method to obtain this kind of devices and their characterization at cryogenic temperatures. Fast and sensitive readout is achieved by using RF reflectometry to study the conduction changes in an adjacent quantum dot used as a SET sensor. Only single quantum dots have been defined in the devices, since really good devices have yet to been cooled down. Single charge transition events have yet to be measured, and the reflectometry measurements need to be optimized. The overall progress of the project is promising, and the first devices have been already produced. |
| نوع الوثيقة: |
master thesis |
| وصف الملف: |
application/pdf |
| اللغة: |
English |
| Relation: |
http://hdl.handle.net/2117/403232; ETSETB-230.178821 |
| الاتاحة: |
http://hdl.handle.net/2117/403232 |
| Rights: |
S'autoritza la difusió de l'obra mitjançant la llicència Creative Commons o similar 'Reconeixement-NoComercial- SenseObraDerivada' ; Open Access |
| رقم الانضمام: |
edsbas.1DC18899 |
| قاعدة البيانات: |
BASE |