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Optical manipulation of valley pseudospin

WebThe optical Stark e˙ect has been applied to manipulate the spin/pseudospin in quantum systems, such as atomic quantum gases19, quantum dots20,21, and III V quantum … WebNov 16, 2024 · Optical manipulation of layer-valley coherence via strong exciton-photon coupling in microcavities. Coherent control and manipulation of quantum degrees of …

Phys. Rev. B 101, 125401 (2024) - Manipulation of valley …

WebMing-Hui Chiu,4Lain-Jong Li,3,4Feng Wang1,2,5† The valley pseudospin is a degree of freedom that emerges in atomically thin two-dimensional transition metal dichalcogenides (MX 2).The capability to manipulate it, in analogy to the control of spin in spintronics, can open up exciting opportunities. WebOct 14, 2024 · Thus, the spin-valley locking and the interplay of two inequivalent valleys give rise to valley-dependent optical selection rules [17]. Manipulation of valley pseudospin thus becomes a central theme in the eld of valleytronics. Several methods have been proposed to achieve transient valley polarization such as optical excitations [18{20], by northbrook fireworks https://mihperformance.com

Ultrafast generation of pseudo-magnetic field for valley …

WebMay 14, 2024 · The valley manipulation is realized via the optical control of the CrI 3 magnetization, which tunes the magnetic exchange field over a range of 20 T. Our results … WebThe valley pseudospin in transition metal dichalcogenide (TMDC) monolayers is a promising degree of freedom for such control, with the optical Stark effect allowing for valley-selective manipulation of energy levels in WS2 and WSe2 using ultrafast optical pulses. WebMar 2, 2024 · Removing valley degeneracy is a necessary condition for manipulating valley degrees of freedom and storing information in future spintronics. Magnetic proximity effect has been demonstrated to be an effective way to introduce exchange interactions, especially in the case of two-dimensional (2D) van der Waals (vdW) heterostructures. We have … northbrook fire prevention bureau

Valley-selective optical Stark effect probed by Kerr rotation

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Optical manipulation of valley pseudospin

Optical manipulation of valley pseudospin (Journal …

WebApr 7, 2024 · Here, the control of layer–valley coherence via strong coupling of valley excitons in bilayer WS2to microcavity photons is demonstrated by exploiting the … WebOct 27, 2024 · To efficiently control and manipulate the valley pseudospin is of paramount importance for valley-based electronics and optoelectronics. A variety of strategies have been developed to address the valley pseudospin including optical, electrical, and magnetic methods; nonetheless, they involve either below liquid-nitrogen… View on PubMed doi.org

Optical manipulation of valley pseudospin

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WebValley exciton polarization has been created in the transition metal dichalcogenide monolayers using excitation by circularly polarized light and has been detected both … WebJun 10, 2024 · For practical applications, on-chip access to and manipulation of valley pseudospins is paramount, not only to read out but especially to initiate the valley pseudospin state. Here, we experimentally demonstrate the selective on-chip, optical near-field initiation of valley pseudospins at room temperature.

http://maxim.ece.illinois.edu/pubs/raginsky_kumar_JOpB01.pdf WebSep 19, 2016 · Here we demonstrate all-optical control of the valley coherence by means of the pseudomagnetic field associated with the optical Stark effect. Using below-bandgap …

WebDec 5, 2014 · The valley-selective optical Stark shift breaks the degeneracy of valley exciton transitions in monolayer WSe 2 and defines an effective valley pseudo-magnetic field. In … WebMay 14, 2024 · The valley manipulation is realized via the optical control of the CrI 3 magnetization, which tunes the magnetic exchange field over a range of 20 T. Lastly, our results reveal a convenient new path toward the optical control of valley pseudospins and van der Waals magnetic heterostructures. Authors:

WebMANIPULATION OF VALLEY PSEUDOSPIN IN … PHYSICAL REVIEW B 101, 125401 (2024) FIG. 2. (a) A schematic diagram of the energy band structure showing the valley-dependent optical selection rule in monolayer TMDs. (b) A schematic diagram showing electronic structures at the K+ and K− valleys in the exchange-coupled WSe 2/CrI 3 heterostructure …

WebMar 2, 2024 · We have explored the electronic properties and the valley physics of 2D WSe2/CrI3 using first-principles calculations. Our results show that a valley splitting of 2 … how to report coinbaseWebIn this paper, we will review our experimental progress on the investigation of these pseudo-spins using atomically thin semiconductors (MoS 2, MoSe 2 etc.), which are either monolayer or bilayer group VI transition metal dichalcogenides. northbrook fireworks 2022WebApr 7, 2024 · Coherent control and manipulation of quantum degrees of freedom such as spins forms the basis of emerging quantum technologies. In this context, the robust valley degree of freedom and the associated valley pseudospin found in two-dimensional transition metal dichalcogenides is a highly attractive platform. northbrook foiahttp://www.alessandrostroppa.com/full-list how to report contract for deed incomeWebOct 26, 2024 · The valley pseudospin in transition metal... Find, read and cite all the research you need on ResearchGate ... fast optical manipulation of single ele ctron spins in quan-tum dots, Solid State ... northbrook fitness centerWebGeneration and manipulation of squeezed states of light in optical networks for quantum communication and computation Maxim Raginsky and Prem Kumar Center for Photonic … northbrook fisheryWebJun 10, 2024 · Nanoscale Optical Addressing of Valley Pseudospins through Transverse Optical Spin Nanoscale Optical Addressing of Valley Pseudospins through Transverse … northbrook fire department