2017/03/07 by Amir Eskandari-asl
Computer Science · Physics and Astronomy · #Atomic physics #Biasing #Condensed matter physics #Coupling (piping) #Laser #Lasing threshold #Materials science #Phonon #Physics #Population #Population inversion #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum dot #Quantum dot laser #Quantum mechanics #Semiconductor #Semiconductor Quantum Structures and Devices #Semiconductor laser theory #Voltage #cond-mat.mes-hall
paper · pdf · doi:10.1016/j.physb.2017.03.001
published as Physica B: Condensed Matter, Volume 513, 15 May 2017, Pages 82-86, ISSN 0921-4526,
openalex publication_date 2017/03/07 · arxiv created 2017/03/13 · arxiv updated 2018/06/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
In this work we consider a current carrying two level quantum dot(QD) that is coupled to a single mode phonon bath. Using self-consistent Hartree-Fock approximation, we obtain the I-V curve of QD. By considering the linear response of our system to an incoming classical light, we see that depending on the parametric regime, the system could have weak or strong light absorption or may even show lasing. This lasing occurs at high enough bias voltages and is explained by a population inversion considering side bands, while the total electron population in the higher level is less than the lower one. The frequency at which we have the most significant lasing depends on the level spacing and phonon frequency and not on the electron-phonon coupling strength.