Valleytronics Show Promise as Quantum Information Storage Method
Valleytronics in a monolayer semiconductor at room temperature
Points to note…
+ Valleytronics is very attractive for future electronic devices and quantum computing technology since its quantum information storage significantly surpasses existing charge or spin control technologies. “However, the phonon-assisted intervalley scattering accelerates dramatically when temperature is increased, resulting in volatile valley states and significantly reduced handedness of far-field photoluminescence at room temperature.”
“Application of valley degree of freedom in optoelectronic devices requires the capability to access and manipulate the valley behaviors,” Dr. Zilong Wu, a researcher in the Zheng Research Group at University of Texas at Austin[.]
+ The manipulation is enabled by the strong light-matter interactions between the quantum carriers, also known as valley excitons, and a purpose-designed plasmonic chiral metamaterial.
+ “The resulting valley degree of freedom in monolayer semiconductors is promising for information storage and processing,” Wu points out. “Valley excitons have also been applied for quantum computing recently. Our work offers a novel strategy to versatilely control valley excitons in monolayer semiconductors, benefiting applications in ultrathin valleytronic and optoelectronic devices.”
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