Spin-selective strong light–matter coupling in a 2D hole gas-microcavity system
The interplay between time-reversal symmetry breaking and strong light–matter coupling in two-dimensional (2D) gases brings intriguing aspects to polariton physics. This combination can lead to a polarization/spin-selective light–matter interaction in the strong coupling regime. Here we report such...
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| Veröffentlicht in: | Nature photonics 2023-10, Vol.17 (10), p.912-916 |
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| container_title | Nature photonics |
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| creator | Suárez-Forero, D. G. Session, D. W. Jalali Mehrabad, M. Knüppel, P. Faelt, S. Wegscheider, W. Hafezi, M. |
| description | The interplay between time-reversal symmetry breaking and strong light–matter coupling in two-dimensional (2D) gases brings intriguing aspects to polariton physics. This combination can lead to a polarization/spin-selective light–matter interaction in the strong coupling regime. Here we report such a selective strong light–matter interaction by harnessing a 2D gas in the quantum Hall regime coupled to a microcavity. Specifically, we demonstrate circular-polarization dependence of the vacuum Rabi splitting, as a function of magnetic field and hole density. We provide a quantitative understanding of the phenomenon by modelling the coupling of optical transitions between Landau levels to the microcavity. This method introduces a control tool over the spin degree of freedom in polaritonic semiconductor systems, paving the way for new experimental possibilities in light–matter hybrids.
Strong coupling of a 2D hole gas in the quantum Hall state dressed with a microcavity mode is studied, showing that tuning the strength of the magnetic field, and therefore the density of states in the system, can select specific spin-dependent light–matter coupling. |
| doi_str_mv | 10.1038/s41566-023-01248-3 |
| format | Article |
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G.</au><au>Session, D. W.</au><au>Jalali Mehrabad, M.</au><au>Knüppel, P.</au><au>Faelt, S.</au><au>Wegscheider, W.</au><au>Hafezi, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Spin-selective strong light–matter coupling in a 2D hole gas-microcavity system</atitle><jtitle>Nature photonics</jtitle><stitle>Nat. Photon</stitle><date>2023-10-01</date><risdate>2023</risdate><volume>17</volume><issue>10</issue><spage>912</spage><epage>916</epage><pages>912-916</pages><issn>1749-4885</issn><eissn>1749-4893</eissn><abstract>The interplay between time-reversal symmetry breaking and strong light–matter coupling in two-dimensional (2D) gases brings intriguing aspects to polariton physics. This combination can lead to a polarization/spin-selective light–matter interaction in the strong coupling regime. Here we report such a selective strong light–matter interaction by harnessing a 2D gas in the quantum Hall regime coupled to a microcavity. Specifically, we demonstrate circular-polarization dependence of the vacuum Rabi splitting, as a function of magnetic field and hole density. We provide a quantitative understanding of the phenomenon by modelling the coupling of optical transitions between Landau levels to the microcavity. This method introduces a control tool over the spin degree of freedom in polaritonic semiconductor systems, paving the way for new experimental possibilities in light–matter hybrids.
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| subjects | 639/301/119 639/624/400/2797 639/766/400/1101 Applied and Technical Physics Broken symmetry Coupling Gases Hole density Hybrids Light Magnetic fields Physics Physics and Astronomy Polaritons Polarization Polarization (spin alignment) Quantum Hall effect Quantum Physics |
| title | Spin-selective strong light–matter coupling in a 2D hole gas-microcavity system |
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