García Ripoll, Juan JoséJuliá-Díaz, BrunoLópez i Iglesias, Mar2025-09-092025-09-092025-06https://hdl.handle.net/2445/223073Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2025, Tutors: Juan José García Ripoll, Bruno Juliá DíazThis work investigates the use of chirped picosecond laser pulses to induce rapid adiabatic passage (RAP) in a single trapped ion, aiming for population inversion between two quantum states. A theoretical framework for RAP linearly chirped pulses is developed, and a novel method to characterise ultrashort pulses is introduced. Numerical simulations solving the Schrödinger equation confirm that RAP leads to state transitions with 100% probability in the resonant regime, independent of the pulse area. The effects of a detuning between the transition and pulse frequencies on the transition probability are also analysed, revealing a linear dependence between the transition probability curve size and the pulse width.6 p.application/pdfengcc-by-nc-nd (c) López, 2025http://creativecommons.org/licenses/by-nc-nd/3.0/es/Pols ultracurtOrdinadors quànticsTreballs de fi de grauUltrashort pulseQuantum computersBachelor's thesesinfo:eu-repo/semantics/bachelorThesisinfo:eu-repo/semantics/openAccess