Cited by 61Quantum and electron transport phenomenaQuantum many-body systemsAdvanced Thermodynamics and Statistical Mechanics

Dynamical signatures of molecular symmetries in nonequilibrium quantum transport

Open access
Thingna, Juzar, Manzano, Daniel, Cao, Jianshu·2016·Scientific Reports

Abstract

Symmetries play a crucial role in ubiquitous systems found in Nature. In this work, we propose an elegant approach to detect symmetries by measuring quantum currents. Our detection scheme relies on initiating the system in an anti-symmetric initial condition, with respect to the symmetric sites and using a probe that acts like a local noise. Depending on the position of the probe the currents exhibit unique signatures such as a quasi-stationary plateau indicating the presence of metastability and multi-exponential decays in case of multiple symmetries. The signatures are sensitive to the characteristics of the probe and vanish completely when the timescale of the coherent system dynamics is much longer than the timescale of the probe. These results are demonstrated using a 4-site model and an archetypal example of the para-benzene ring and are shown to be robust under a weak disorder.

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  • Spontaneous emission of light by an excited atom is a well-known example requiring fully quantized description.

    “One well-known example is the process of spontaneous emission of light by an excited atom [50, 51, 52].”

    From Fundamentals of quantum mechanics in Liouville space (2020) · cites this paper as [51]

    The Methods section discusses exciton transport and a quantum master equation, but does not address spontaneous emission of light by an excited atom or whether it requires a fully quantized description. Searches for those terms found no passage on that point in our copy; page numbers were not provided. (LLM, conf=0.75)

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Research works printed but not linked: 3

  1. Walschaers M., Fernandez-de-Cossio Diaz J., Mulet R. & Buchleitner A. Optimally designed quantum transport across disordered networks. Phys. Rev. Lett. 111, 180601 (2013). 24237498
  2. Lowe J. P. Quantum Chemistry (Academic Press, San Diego, 1978).
  3. Gorini V., Kossakowski A. & Sudarshan E. C. G. Complete positive semigroups of N-level systems. J. Math. Phys. 17, 821 (1976).

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Authors
Thingna, J., Manzano, D., & Cao, J.
Affiliations
  • Singapore-MIT Alliance for Research and Technology (SG)
  • Singapore University of Technology and Design (SG)
Corresponding author
Cao, Jianshu
Venue
Scientific Reports
Published
2016-06-17
Volume
6
Issue
1
Pages
28027-28027
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2289283187
Cited by
61
References
61
Citations by year
2026: 4 · 2025: 5 · 2024: 4 · 2023: 3 · 2022: 10 · 2021: 7 · 2020: 10 · 2019: 3 · 2018: 5 · 2017: 5 · 2016: 5
FWCI
2.84
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion, cc-by-nc)
  • arXiv (Cornell University)
  • Nature
Funders
  • National Science Foundation (1112825)
  • Singapore University of Technology and Design
  • Junta de Andalucía (291780)
  • Division of Chemistry (CHE-1112825)
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum and electron transport phenomena
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum many-body systems
  • Physical Sciences › Physics and Astronomy › Statistical and Nonlinear Physics › Advanced Thermodynamics and Statistical Mechanics
Keywords
molecular symmetry, nonequilibrium quantum transport, quantum current, symmetry detection, metastability, multiexponential decay, weak disorder

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