Long-Range Non-Equilibrium Coherent Tunneling Induced by Fractional Vibronic Resonances

• URL: http://arxiv.org/abs/2111.06137v2
• Date: Thu, 12 May 2022 16:47:59 GMT
• Title: Long-Range Non-Equilibrium Coherent Tunneling Induced by Fractional Vibronic Resonances
• Authors: R. Kevin Kessing, Pei-Yun Yang, Salvatore R. Manmana, and Jianshu Cao
• Abstract summary: 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.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We study the influence of a linear energy bias on a non-equilibrium excitation on a chain of molecules coupled to local phonons (a tilted Holstein model) using both a random-walk rate kernel theory and a nonperturbative, massively parallelized adaptive-basis algorithm. We uncover structured and discrete vibronic resonance behavior fundamentally different from both linear response theory and homogeneous polaron dynamics. Remarkably, resonance between the phonon energy $\hbar\omega$ and the bias $\delta_\epsilon$ occurs not only at integer but also fractional ratios $\delta_\epsilon/(\hbar\omega) = \frac{m}{n}$, which effect long-range $n$-bond $m$-phonon tunneling. These observations are also reproduced in a model calculation of a recently demonstrated Cy3 system. Potential applications range from molecular electronics to optical lattices and artificial light harvesting via vibronic engineering of coherent quantum transport.

Related papers

• Quench dynamics in higher-dimensional Holstein models: Insights from Truncated Wigner Approaches [41.94295877935867]
  We study the melting of charge-density waves in a Holstein model after a sudden switch-on of the electronic hopping. A comparison with exact data obtained for a Holstein chain shows that a semiclassical treatment of both the electrons and phonons is required in order to correctly describe the phononic dynamics.
  arXiv  Detail & Related papers  (2023-12-19T16:14:01Z)
• Dynamical structure factor and a new method to measure the pairing gap in two-dimensional attractive Fermi-Hubbard model [7.317437085639568]
  We study the dynamical excitations of attractive Fermi-Hubbard model in a two-dimensional square optical lattice. Two kinds of collective modes are investigated, including a Goldstone phonon mode at transferred momentum.
  arXiv  Detail & Related papers  (2023-05-15T06:57:44Z)
• 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)
• In-Gap Band Formation in a Periodically Driven Charge Density Wave Insulator [68.8204255655161]
  Periodically driven quantum many-body systems host unconventional behavior not realized at equilibrium. We investigate such a setup for strongly interacting spinless fermions on a chain, which at zero temperature and strong interactions form a charge density wave insulator.
  arXiv  Detail & Related papers  (2022-05-19T13:28:47Z)
• Generalization of the Tavis-Cummings model for multi-level anharmonic systems: insights on the second excitation manifold [0.0]
  This work contrasts predictions from the Tavis-Cummings (TC) model, in which the material is a collection of two-level systems. We simplify the brute-force diagonalization of a gigantic $N2times N2$ Hamiltonian. We find resonant conditions between bipolaritons and anharmonic transitions where two-photon absorption can be enhanced.
  arXiv  Detail & Related papers  (2022-02-03T06:33:42Z)
• Non-Markovian perturbation theories for phonon effects in strong-coupling cavity quantum electrodynamics [0.0]
  phonon interactions are inevitable in cavity quantum electrodynamical systems based on solid-state emitters or fluorescent molecules. It remains a significant theoretical challenge to describe such effects in a computationally efficient manner. We consider four non-Markovian perturbative master equation approaches to describe such dynamics.
  arXiv  Detail & Related papers  (2021-03-26T08:32:19Z)
• $\mathcal{P}$,$\mathcal{T}$-odd effects for RaOH molecule in the excited vibrational state [77.34726150561087]
  Triatomic molecule RaOH combines the advantages of laser-coolability and the spectrum with close opposite-parity doublets. We obtain the rovibrational wave functions of RaOH in the ground electronic state and excited vibrational state using the close-coupled equations derived from the adiabatic Hamiltonian.
  arXiv  Detail & Related papers  (2020-12-15T17:08:33Z)
• Resonant high-energy bremsstrahlung of ultrarelativistic electrons in the field of a nucleus and a pulsed light wave [68.8204255655161]
  Research investigates the resonant high-energy spontaneous bremsstrahlung of ultrarelativistic electrons with considerable energies in the field of a nucleus and a quasimonochromatic laser wave.
  arXiv  Detail & Related papers  (2020-04-05T16:27:11Z)
• The Shape of the Electric Dipole Function Determines the Sub-Picosecond Dynamics of Anharmonic Vibrational Polaritons [0.0]
  We describe for the first time the essential role of permanent dipole moments in the femtosecond dynamics of vibrational polariton wavepackets. We propose a non-adiabatic state preparation scheme to generate vibrational polaritons using nanoscale infrared antennas and UV-vis photochemistry or electron tunneling.
  arXiv  Detail & Related papers  (2020-03-17T15:55:09Z)
• Optical response of atom chains beyond the limit of low light intensity: The validity of the linear classical oscillator model [0.0]
  We study the case of perfectly mode-matched drives and the case of standing wave drives. By individually exciting eigenmodes we find that this critical intensity has a $upsilon_alpha2.5$ scaling for narrower resonances and more strongly interacting systems. The $upsilon_alpha3$ scaling also corresponds to the semiclassical result whereby quantum fluctuations between the atoms have been neglected.
  arXiv  Detail & Related papers  (2020-02-04T17:32:24Z)

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.