Phonon Chirality Induced by Vibronic-Orbital Coupling
- URL: http://arxiv.org/abs/2203.13361v1
- Date: Sat, 19 Mar 2022 21:54:03 GMT
- Title: Phonon Chirality Induced by Vibronic-Orbital Coupling
- Authors: Yun-Yi Pai, Claire E. Marvinney, Liangbo Liang, Ganesh Pokharel, Jie
Xing, Haoxiang Li, Xun Li, Michael Chilcote, Matthew Brahlek, Lucas Lindsay,
Hu Miao, Athena S. Sefat, David Parker, Stephen D. Wilson, and Benjamin J.
Lawrie
- Abstract summary: We observe angular momentum transfer between phonons and an orbital state in a vibronic bound state of a candidate quantum spin liquid.
This observation has profound implications for the engineering of phonon band structure topology through chiral quasiparticle interactions.
- Score: 8.617025752943505
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: The notion that phonons can carry pseudo-angular momentum has become popular
in the last decade, with recent research efforts highlighting phonon chirality,
Berry curvature of phonon band structure, and the phonon Hall effect. When a
phonon is resonantly coupled to a crystal electric field excitation, a
so-called vibronic bound state forms. Here, we observe angular momentum
transfer of $\delta$Jz = $\pm$1$\hbar$ between phonons and an orbital state in
a vibronic bound state of a candidate quantum spin liquid. This observation has
profound implications for the engineering of phonon band structure topology
through chiral quasiparticle interactions.
Related papers
- Topological quantum slinky motion in resonant extended Bose-Hubbard model [0.0]
We study the one-dimensional Bose-Hubbard model under the resonant condition.
A series of quantum slinky oscillations occur in a two-site system for boson numbers $nin lbrack 2,infty )$.
arXiv Detail & Related papers (2024-10-17T06:20:09Z) - Raman-phonon-polariton condensation in a transversely pumped cavity [44.99833362998488]
We suggest a new approach to realising phonon polaritons, by employing a transverse-pumping Raman scheme.
We show that such a system may realise a phonon-polariton condensate.
arXiv Detail & Related papers (2024-05-08T17:59:31Z) - Unveiling the Quantum Toroidal Dipole in Nanosystems: Quantization,
Interaction Energy, and Measurement [44.99833362998488]
We investigate a quantum particle confined to a toroidal surface in the presence of a filiform current along the system's rotational axis.
Our analysis reveals that the interaction between the particle and the current induces a non-zero toroidal dipole in the particle's stationary states.
arXiv Detail & Related papers (2024-01-26T13:31:32Z) - Thermal masses and trapped-ion quantum spin models: a self-consistent approach to Yukawa-type interactions in the $λ\!φ^4$ model [44.99833362998488]
A quantum simulation of magnetism in trapped-ion systems makes use of the crystal vibrations to mediate pairwise interactions between spins.
These interactions can be accounted for by a long-wavelength relativistic theory, where the phonons are described by a coarse-grained Klein-Gordon field.
We show that thermal effects, which can be controlled by laser cooling, can unveil this flow through the appearance of thermal masses in interacting QFTs.
arXiv Detail & Related papers (2023-05-10T12:59:07Z) - Quantum vibrational mode in a cavity confining a massless spinor field [91.3755431537592]
We analyse the reaction of a massless (1+1)-dimensional spinor field to the harmonic motion of one cavity wall.
We demonstrate that the system is able to convert bosons into fermion pairs at the lowest perturbative order.
arXiv Detail & Related papers (2022-09-12T08:21:12Z) - Long-Range Non-Equilibrium Coherent Tunneling Induced by Fractional
Vibronic Resonances [0.0]
We study the influence of a linear energy bias on a non-equilibrium excitation on a chain of molecules coupled to local phonons.
We uncover structured and discrete vibronic resonance behavior fundamentally different from both linear response theory and homogeneous polaron dynamics.
Potential applications range from molecular electronics to optical lattices and artificial light harvesting via vibronic engineering of coherent quantum transport.
arXiv Detail & Related papers (2021-11-11T10:40:38Z) - Nearly-Resonant Crystalline-Phononic Coupling in Quantum Spin Liquid
Candidate CsYbSe$_2$ [48.30279211143264]
CsYbSe$$, a recently identified quantum spin liquid (QSL) candidate, exhibits strong crystal electric field excitations.
We identify phonon and CEF modes with Raman spectroscopy and observe strong CEF-phonon mixing resulting in a vibronic bound state.
arXiv Detail & Related papers (2021-11-06T17:00:34Z) - Chiral spin-phonon bound states and spin-spin interactions with phononic
lattices [1.7164987537199843]
We propose a reliable scheme for coupling spins and phonons in phononic dimer and trimer lattices.
We show the formation of chiral spin-phonon bound states and topology-dependent phononic collective radiation.
This work provides a promising platform for phonon-based quantum information processing and quantum simulation.
arXiv Detail & Related papers (2021-09-29T02:43:38Z) - Generation of entanglement between quantum dot molecule with the
presence of phonon effects in a voltage-controlled junction [0.0]
We investigate the generation of entanglement through a quantum dot molecule under the influence of vibrational phonon modes.
The molecular quantum dot system is realized by coupled quantum dots inside a suspended carbon nanotube.
arXiv Detail & Related papers (2021-06-10T09:37:08Z) - Fano interference in quantum resonances from angle-resolved elastic
scattering [62.997667081978825]
We show that probing the angular dependence of the cross section allows us to unveil asymmetric Fano profiles in a single channel shape resonance.
We observe a shift in the peak of the resonance profile in the elastic collisions between metastable helium and deuterium molecules.
arXiv Detail & Related papers (2021-05-12T20:41:25Z) - Molecule-photon interactions in phononic environments [0.0879626117219674]
Liquid quantum optical systems can interface photons, electronic degrees of freedom, localized mechanical vibrations and phonons.
In particular, the strong vibronic interaction between electrons and nuclear motion in a molecule resembles the optomechanical radiation pressure Hamiltonian.
We take here an open quantum system approach to the non-equilibrium dynamics of molecules embedded in a crystal.
arXiv Detail & Related papers (2019-12-05T15:11:46Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.