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Ultrastrong light-matter coupling of cyclotron transition in monolayer MoS_2

机译：单层MoS_2中回旋加速器跃迁的超强光-质耦合

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摘要

The light-matter coupling between cyclotron transition and photon is theoretically investigated in a monolayer MoS_2 system with consideration of the influence of electron-hole asymmetry. The results show that ultrastrong light-matter coupling can be achieved at a high filling factor of Landau levels. Furthermore, we show that, in contrast to the case for conventional semiconductor resonators, the MoS_2 system shows a vacuum instability. In a monolayer MoS_2 resonator, the diamagnetic term can still play an important role in determining magnetopolariton dispersion, which is different from a monolayer graphene system. The diamagnetic term arises from electron-hole asymmetry, which indicates that electron-hole asymmetry can influence the quantum phase transition. Our study provides new insights in cavity-controlled magnetotransport in the MoS_2 system, which could lead to the development of polariton-based devices.
机译：理论上在单层MoS_2系统中研究了回旋加速器跃迁与光子之间的光-质耦合，其中考虑了电子-空穴不对称性的影响。结果表明，在朗道水平的高填充因子下可以实现超强光-质耦合。此外，我们表明，与常规半导体谐振器相比，MoS_2系统显示出真空不稳定性。在单层MoS_2谐振器中，与单层石墨烯系统不同，反磁性项在确定磁极分散性方面仍可以发挥重要作用。反磁性项源自电子-空穴不对称性，这表明电子-空穴不对称性可影响量子相变。我们的研究为MoS_2系统中由腔控制的磁传输提供了新的见识，这可能会导致基于极化子的器件的发展。

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  • 来源
    《Physical review》 |2016年第4期|045420.1-045420.7|共7页
  • 作者

    Benliang Li; Tao Liu; Daniel W. Hewak; Zexiang Shen; Qi Jie Wang;

  • 作者单位

    Centre for OptoElectronics and Biophotonics (COEB), School of Electrical & Electronic Engineering & The Photonics Institute, Nanyang Technological University, 50 Nanyang Ave., Singapore, 639798,Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, United Kingdom;

    Centre for OptoElectronics and Biophotonics (COEB), School of Electrical & Electronic Engineering & The Photonics Institute, Nanyang Technological University, 50 Nanyang Ave., Singapore, 639798;

    Optoelectronics Research Centre, University of Southampton, Southampton SO17 1BJ, United Kingdom;

    Centre for Disruptive Photonic Technologies (CDPT), School of Physical and Mathematical Sciences, The Photonics Institute, Nanyang Technological University, Singapore, 637371;

    Centre for OptoElectronics and Biophotonics (COEB), School of Electrical & Electronic Engineering & The Photonics Institute, Nanyang Technological University, 50 Nanyang Ave., Singapore, 639798,Centre for Disruptive Photonic Technologies (CDPT), School of Physical and Mathematical Sciences, The Photonics Institute, Nanyang Technological University, Singapore, 637371;

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