Terahertz control of many-body dynamics in quantum materials

Yang, Chun-Chuan; Li, Jingwen; Fiebig, Manfred; Pal, Shovon

doi:10.1038/s41578-023-00566-w

Cited by 13 publications

(2 citation statements)

References 216 publications

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“…Overall, the proposed alternative way to achieve the Fizeau drag holds interest in studying carrier dynamics and interactions in a wide range of Weyl and Dirac materials and can be used to develop new techniques to achieve and models to describe the alteration of symmetry at ultrafast time scales. This mechanism could add to the toolbox of THz-driven controls of quantum materials and studies of many-body dynamics …”

Section: Resultsmentioning

confidence: 99%

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Plasmon Fizeau Drag in 3D Dirac and Weyl Semimetals

Blevins,

Boriskina

2024

ACS Photonics

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There is a need for compact, dynamically tunable, nonreciprocal optical elements to enable on-chip-compatible optical isolators and more efficient radiative energy transfer systems. Plasmon Fizeau drag, the drag of an electrical current on propagating surface plasmon polaritons (SPPs), has been proposed to induce nonreciprocal surface modes to enable one-way energy transport. However, relativistic electron drift velocities are required to induce an appreciable contrast between the dispersion characteristics of copropagating and counter-propagating surface plasmon modes. The high electron drift velocity of graphene previously allowed for the experimental demonstration of current-induced nonreciprocity in a two-dimensional (2D) Dirac material. The high electron drift and Fermi velocities in three-dimensional (3D) Dirac materials make them ideal candidates for the effect; however, both the theory of the Fizeau drag effect and its experimental demonstrations in 3D Dirac materials are missing. Here, we develop a comprehensive theory of Fizeau drag in DC-biased 3D Weyl semimetals (WSMs) or Dirac semimetals (DSMs), both under local and nonlocal approximation and with dissipative losses. We predict that under practical assumptions for loss, Fizeau drag in the DSM Cd3As2 opens windows of pseudounidirectional transport. We additionally introduce new figures of merit to rank nonreciprocal plasmonic systems by their potential for directional SPP transport. Further, we propose a new approach for achieving appreciable plasmonic Fizeau drag via optically pumping bulk inversion symmetry-breaking WSMs or DSMs.

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Section: Resultsmentioning

confidence: 99%

“…This mechanism could add to the toolbox of THz-driven controls of quantum materials and studies of many-body dynamics. 92 Fizeau-Drag SPP Dispersion in 3D WSMs and DSMs. We model plasmon Fizeau drag under drift current bias using the transformed nonlocal Drude model in eq 7.…”

Section: Acsmentioning

confidence: 99%

Plasmon Fizeau Drag in 3D Dirac and Weyl Semimetals

Blevins,

Boriskina

2024

ACS Photonics

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Element-Specific Ultrafast Lattice Dynamics in Monolayer WSe₂

Jung,

Dong,

Zahn

et al. 2024

Nano Lett.

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We study monolayer WSe 2 using ultrafast electron diffraction. We introduce an approach to quantitatively extract atomic-site-specific information, providing an element-specific view of incoherent atomic vibrations following femtosecond excitation. Via differences between W and Se vibrations, we identify stages in the nonthermal evolution of the phonon population. Combined with a calculated phonon dispersion, this element specificity enables us to identify a long-lasting overpopulation of specific optical phonons and to interpret the stages as energy transfer processes between specific phonon groups. These results demonstrate the appeal of resolving element-specific vibrational information in the ultrafast time domain.

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Programmable generation of counterrotating bicircular light pulses in the multi-terahertz frequency range

Ogawa,

Kanda,

Murotani

et al. 2024

Nat Commun

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The manipulation of solid states using intense infrared or terahertz light fields is a pivotal area in contemporary ultrafast photonics research. While conventional circular polarization has been well explored, the potential of counterrotating bicircular light remains widely underexplored, despite growing interest in theory. In the mid-infrared or multi-terahertz region, experimental challenges lie in difficulties in stabilizing the relative phase between two-color lights and the lack of available polarization elements. Here, we successfully generated phase-stable counterrotating bicircular light pulses in the 14–39 THz frequency range circumventing the above problems. Employing spectral broadening, polarization pulse shaping with a spatial light modulator, and intra-pulse difference frequency generation leveraging a distinctive angular-momentum selection rule within the nonlinear crystal, we achieved direct conversion from near-infrared pulses into the designed counterrotating bicircular multi-terahertz pulses. Use of the spatial light modulator enables programmable control over the shape, orientation, rotational symmetry, and helicity of the bicircular light field trajectory. This advancement provides a novel pathway for the programmable manipulation of light fields, and marks a significant step toward understanding and harnessing the impact of tailored light fields on matter, particularly in the context of topological semimetals.

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Terahertz control of many-body dynamics in quantum materials

Cited by 13 publications

References 216 publications

Plasmon Fizeau Drag in 3D Dirac and Weyl Semimetals

Plasmon Fizeau Drag in 3D Dirac and Weyl Semimetals

Element-Specific Ultrafast Lattice Dynamics in Monolayer WSe₂

Programmable generation of counterrotating bicircular light pulses in the multi-terahertz frequency range

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Terahertz control of many-body dynamics in quantum materials

Cited by 13 publications

References 216 publications

Plasmon Fizeau Drag in 3D Dirac and Weyl Semimetals

Plasmon Fizeau Drag in 3D Dirac and Weyl Semimetals

Element-Specific Ultrafast Lattice Dynamics in Monolayer WSe2

Programmable generation of counterrotating bicircular light pulses in the multi-terahertz frequency range

Contact Info

Product

Resources

About

Element-Specific Ultrafast Lattice Dynamics in Monolayer WSe₂