Cotunneling assisted nonequilibrium thermodynamics of a photosynthetic junction

• URL: http://arxiv.org/abs/2410.11476v1
• Date: Tue, 15 Oct 2024 10:24:03 GMT
• Title: Cotunneling assisted nonequilibrium thermodynamics of a photosynthetic junction
• Authors: Debasish Sharma, Manash Jyoti Sarmah, Mriganka Sandilya, Himangshu Prabal Goswami,
• Abstract summary: We theoretically investigate a photosystem II-based reaction center modeled as a nonequilibrium quantum junction. We focus on the electron-electron interactions that enable cotunneling events to be captured through quantum mechanical rates.
• Score: 1.0889037375410424
• License:
• Abstract: We theoretically investigate a photosystem II-based reaction center modeled as a nonequilibrium quantum junction. We specifically focus on the electron-electron interactions that enable cotunneling events to be captured through quantum mechanical rates due to the inclusion of a negatively charged manybody state. Using a master equation framework with realistic spectral profiles, we analyze the cotunneling assisted current, power, and work. Amplification of the cotunneling assisted current and power occurs over a narrower bias range, reflecting a trade-off where higher flux is compensated by a reduced work window. We further report that the cotunneling-enhanced thermodynamic variables, particularly within specific bias windows, depends on the interplay between cotunneling amplitudes, electron transition rates, and interaction energy. Both attractive and repulsive electronic interactions can enhance cotunneling, but this effect is sensitive to the energy balance between states and the tunneling strength asymmetries.

Related papers

• Oscillatory dissipative tunneling in an asymmetric double-well potential [32.65699367892846]
  Chemical research will benefit from a fully controllable, asymmetric double-well equipped with precise measurement capabilities of the tunneling rates. Our work paves the way for analog molecule simulators based on quantum superconducting circuits.
  arXiv  Detail & Related papers  (2024-09-19T22:43:07Z)
• Quantum field heat engine powered by phonon-photon interactions [58.720142291102135]
  We present a quantum heat engine based on a cavity with two oscillating mirrors. The engine performs an Otto cycle during which the walls and a field mode interact via a nonlinear Hamiltonian.
  arXiv  Detail & Related papers  (2023-05-10T20:27:15Z)
• Giant rectification in strongly-interacting driven tilted systems [0.0]
  Correlated quantum systems feature a wide range of nontrivial effects emerging from interactions between their constituting particles. In nonequilibrium scenarios, these manifest in phenomena such as many-body insulating states and anomalous scaling laws of currents of conserved quantities. We propose a giant rectification scheme based on the asymmetric interplay between strong particle interactions and a tilted potential.
  arXiv  Detail & Related papers  (2022-09-23T16:55:09Z)
• Dissipative Landau-Zener tunneling: crossover from weak to strong environment coupling [0.043784018373427214]
  Landau-Zener (LZ) tunneling describes transitions in a two-level system during a sweep through an anti-crossing. Dissipation due to coupling between the system and environment is an important factor in determining the transition rates. We report experimental results on the dissipative LZ transition using a tunable superconducting flux qubit.
  arXiv  Detail & Related papers  (2022-07-05T12:58:53Z)
• Formation of robust bound states of interacting microwave photons [148.37607455646454]
  One of the hallmarks of interacting systems is the formation of multi-particle bound states. We develop a high fidelity parameterizable fSim gate that implements the periodic quantum circuit of the spin-1/2 XXZ model. By placing microwave photons in adjacent qubit sites, we study the propagation of these excitations and observe their bound nature for up to 5 photons.
  arXiv  Detail & Related papers  (2022-06-10T17:52:29Z)
• Driving Force and Nonequilibrium Vibronic Dynamics in Charge Separation of Strongly Bound Electron-Hole Pairs [59.94347858883343]
  We study the dynamics of charge separation in one, two and three-dimensional donor-acceptor networks. This allows us to identify the precise conditions in which underdamped vibrational motion induces efficient long-range charge separation.
  arXiv  Detail & Related papers  (2022-05-11T17:51:21Z)
• Theory for polaritonic quantum tunneling [0.0]
  I investigate the tunneling decay rate of a polaritonic system formed by a strong coupling between a vacuum cavity mode and $N$ metastable systems. The resulting rate modification due to the cavity is proportional to the mean of the second power of the light-matter coupling.
  arXiv  Detail & Related papers  (2022-04-28T13:32:50Z)
• Photon-mediated interactions near a Dirac photonic crystal slab [68.8204255655161]
  We develop a theory of dipole radiation near photonic Dirac points in realistic structures. We find positions where the nature of the collective interactions change from being coherent to dissipative ones. Our results significantly improve the knowledge of Dirac light-matter interfaces.
  arXiv  Detail & Related papers  (2021-07-01T14:21:49Z)
• Chemical tuning of spin clock transitions in molecular monomers based on nuclear spin-free Ni(II) [52.259804540075514]
  We report the existence of a sizeable quantum tunnelling splitting between the two lowest electronic spin levels of mononuclear Ni complexes. The level anti-crossing, or magnetic clock transition, associated with this gap has been directly monitored by heat capacity experiments. The comparison of these results with those obtained for a Co derivative, for which tunnelling is forbidden by symmetry, shows that the clock transition leads to an effective suppression of intermolecular spin-spin interactions.
  arXiv  Detail & Related papers  (2021-03-04T13:31:40Z)
• Universal pair-polaritons in a strongly interacting Fermi gas [0.0]
  We report on experiments using molecular transitions in a strongly interacting Fermi gas, directly coupling cavity photons to pairs of atoms. The dependence of the pair-polariton spectrum on interatomic interactions is universal, independent of the transition used. This represents a magnification of many-body effects by two orders of magnitude in energy.
  arXiv  Detail & Related papers  (2021-03-03T15:06:06Z)
• Optically pumped spin polarization as a probe of many-body thermalization [50.591267188664666]
  We study the spin diffusion dynamics of 13C in diamond, which we dynamically polarize at room temperature via optical spin pumping of engineered color centers. We find good thermal contact throughout the nuclear spin bath, virtually independent of the hyperfine coupling strength. Our results open intriguing opportunities to study the onset of thermalization in a system by controlling the internal interactions within the bath.
  arXiv  Detail & Related papers  (2020-05-01T23:16:33Z)

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.