External Field‐induced Transitions in Quantum Dot: Role of Noise‐anharmonicity Interplay

Abstract

AbstractThis work scrutinizes thetime‐average excitation rate(TAER) among theGaAs quantum dot(QD) eigenstates under the aegis ofGaussian white noise(GWN) and theparityof theanharmonic potential(odd/even). GWN connects with the system byadditiveormultiplicativemode. The said excitation of the ground state population has been triggered by an external field which may be apolychromatic radiation field(PRF), orpulsed field(PF) orchirped pulsed field(CPF). The study reveals the subtle nuances of the interplay between noise (additive or multiplicative), anharmonicity (odd or even) and the external field (PRF, PF or CPF) that finally govern the attributes of the TAER diagrams. The TAER profiles exhibit persistent growth, persistent decline, maximization (important in view of production of prominentnonlinear optical properties), minimization and saturation (relevant tothe dynamic freezing). The findings appear useful for regulating the TAER among theGaAsQD eigenstates which have substantial technological relevance.