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4 October 2024 Electrical switching of circular polarization of spin light emitting diode
Pambiang Abel Dainone, Nicholas Figueiredo Prestes, Pierre Renucci, Alexandre Bouché, Martina Morassi, Xavier Devaux, Markus Lindemann, Jean-Marie George, Henri Jaffrès, Aristide Lemaître, Bo Xu, Mathieu Stoffel, Tongxin Chen, Laurent Lombez, Delphine Lagarde, Guangwei Cong, Tianyi Ma, Philippe Pigeat, Michel Vergnat, Hervé Rinnert, Xavier Marie, Xiufeng Han, Yuan Lu, Stephane Mangin, Juan-Carlos Rojas Sanchez, Jian-Ping Wang, Matthew C. Beard, Nils C. Gerhardt, Igor Žutić
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Proceedings Volume PC13119, Spintronics XVII; PC131190A (2024) https://doi.org/10.1117/12.3027599
Event: Nanoscience + Engineering, 2024, San Diego, California, United States
Abstract
Direct high-speed modulation of circular polarization (Pc) of coherent light will open the way for new communication technology and offers the possibility to overcome the main bottleneck of the optical telecommunications. Here, by using spin-orbit torque (SOT) with spin Hall effect to control the spin injector magnetization, we report for the first time to achieve electrical control of the circular polarization of light emitted from a quantum dot based light emitting diode (LED) at room temperature [1]. The circular polarization can be modulated between ±25% at 250K and ±16% at 290K after pulsed current switching injector magnetization. A repetition of more than 60 times do not reveal any degradation at the injector/semiconductor interface. Our achievement will directly contribute the implementation of the new optical telecommunication technology with Pc modulation. [1] P. A. Dainone, et al. “Controlling the helicity of light by electrical magnetization switching”, Nature, to be published.
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Pambiang Abel Dainone, Nicholas Figueiredo Prestes, Pierre Renucci, Alexandre Bouché, Martina Morassi, Xavier Devaux, Markus Lindemann, Jean-Marie George, Henri Jaffrès, Aristide Lemaître, Bo Xu, Mathieu Stoffel, Tongxin Chen, Laurent Lombez, Delphine Lagarde, Guangwei Cong, Tianyi Ma, Philippe Pigeat, Michel Vergnat, Hervé Rinnert, Xavier Marie, Xiufeng Han, Yuan Lu, Stephane Mangin, Juan-Carlos Rojas Sanchez, Jian-Ping Wang, Matthew C. Beard, Nils C. Gerhardt, and Igor Žutić "Electrical switching of circular polarization of spin light emitting diode", Proc. SPIE PC13119, Spintronics XVII, PC131190A (4 October 2024); https://doi.org/10.1117/12.3027599
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KEYWORDS
Polarization
Light emitting diodes
Quantum switching
Modulation
Quantum control
Quantum spin
Telecommunications
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