2018/10/14 by Bintoro S. Nugroho, Bintoro Siswo Nugroho, Alexander A. Iskandar +3 · 32 citations
Computer Science · Physics and Astronomy · #Biexciton #Condensed matter physics #Photon #Physics #Principal quantum number #Quantum #Quantum Information and Cryptography #Quantum dissipation #Quantum dot #Quantum mechanics #Quantum optics and atomic interactions #Rabi cycle #Rabi frequency #Semiconductor Quantum Structures and Devices #quant-ph
paper · pdf · doi:10.1103/physrevb.99.075302
published in Physical review. B./Physical review. B 99(7) (American Physical Society) · 11 pages, 19 figures
arxiv created 2018/10/14 · openalex publication_date 2019/02/11 · arxiv updated 2019/02/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Two-photon Rabi oscillations hold potential for quantum computing and quantum information processing because during a Rabi cycle a pair of entangled photons may be created. We theoretically investigate the onset of this phenomenon in a heterodimer comprising a semiconductor quantum dot strongly coupled to a metal nanoparticle. Two-photon Rabi oscillations in this system occur due to a coherent two-photon process involving the ground-to-biexciton transition in the quantum dot. The presence of a metal nanoparticle near the quantum dot results in a self-action of the quantum dot via the metal nanoparticle because the polarization state of the latter depends on the quantum state of the former. The interparticle interaction gives rise to two principal effects: (i) enhancement of the external field amplitude and (ii) renormalization of the quantum dot's resonance frequencies and relaxation rates of the off-diagonal density matrix elements, both depending on the populations of the quantum dot's levels. Here, we focus on the first effect, which results in interesting features, in particular, an increased number of Rabi cycles per pulse compared to an isolated quantum dot and subsequent growth of the number of entangled photon pairs per pulse. We also discuss the destructive role of radiative decay of the excitonic states on two-photon Rabi oscillations for both an isolated quantum dot and a heterodimer.