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Plasmon-assisted two-photon Rabi oscillations in a semiconductor quantum dot – Metal nanoparticle heterodimer
Nugroho B.S.a, Iskandar A.A.b, Malyshev V.A.c, Knoester J.c
a Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Tanjungpura, Jalan Jendral A. Yani, Pontianak, 78124, Indonesia
b Physics of Magnetism and Photonics Research Group, Institut Teknologi Bandung, Bandung, 40132, Indonesia
c Zernike Institute for Advanced Materials, University of Groningen, Groningen, 9747 AG, Netherlands
[vc_row][vc_column][vc_row_inner][vc_column_inner][vc_separator css=”.vc_custom_1624529070653{padding-top: 30px !important;padding-bottom: 30px !important;}”][/vc_column_inner][/vc_row_inner][vc_row_inner layout=”boxed”][vc_column_inner width=”3/4″ css=”.vc_custom_1624695412187{border-right-width: 1px !important;border-right-color: #dddddd !important;border-right-style: solid !important;border-radius: 1px !important;}”][vc_empty_space][megatron_heading title=”Abstract” size=”size-sm” text_align=”text-left”][vc_column_text]© 2019 American Physical Society.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.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Author keywords” size=”size-sm” text_align=”text-left”][vc_column_text]Density matrix elements,Entangled photon pairs,Entangled photons,Inter-particle interaction,Polarization state,Quantum Computing,Quantum-information processing,Resonance frequencies[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Indexed keywords” size=”size-sm” text_align=”text-left”][vc_column_text][/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”Funding details” size=”size-sm” text_align=”text-left”][vc_column_text]This work was supported by the Directorate General of Higher Education, Ministry of Research, Technology and Higher Education of Indonesia (PKLN research grant, Contract No. 098/SP2H/LT/DRPM/2018). B.S.N. acknowledges the University of Groningen for hospitality.[/vc_column_text][vc_empty_space][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][vc_empty_space][megatron_heading title=”DOI” size=”size-sm” text_align=”text-left”][vc_column_text]https://doi.org/10.1103/PhysRevB.99.075302[/vc_column_text][/vc_column_inner][vc_column_inner width=”1/4″][vc_column_text]Widget Plumx[/vc_column_text][/vc_column_inner][/vc_row_inner][/vc_column][/vc_row][vc_row][vc_column][vc_separator css=”.vc_custom_1624528584150{padding-top: 25px !important;padding-bottom: 25px !important;}”][/vc_column][/vc_row]