Scale-estimation of quantum coherent energy transport in multiple-minima systems.
A generic and intuitive model for coherent energy transport in multiple minima systems coupled to a quantum mechanical bath is shown. Using a simple spin-boson system, we illustrate how a generic donor-acceptor system can be brought into resonance using a narrow band of vibrational modes, such that...
| मुख्य लेखकों: | , |
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| स्वरूप: | Journal article |
| भाषा: | English |
| प्रकाशित: |
Nature Publishing Group
2014
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| विषय: |
| _version_ | 1826289404608512000 |
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| author | Farrow, T Vedral, V |
| author_facet | Farrow, T Vedral, V |
| author_sort | Farrow, T |
| collection | OXFORD |
| description | A generic and intuitive model for coherent energy transport in multiple minima systems coupled to a quantum mechanical bath is shown. Using a simple spin-boson system, we illustrate how a generic donor-acceptor system can be brought into resonance using a narrow band of vibrational modes, such that the transfer efficiency of an electron-hole pair (exciton) is made arbitrarily high. Coherent transport phenomena in nature are of renewed interest since the discovery that a photon captured by the light-harvesting complex (LHC) in photosynthetic organisms can be conveyed to a chemical reaction centre with near-perfect efficiency. Classical explanations of the transfer use stochastic diffusion to model the hopping motion of a photo-excited exciton. This accounts inadequately for the speed and efficiency of the energy transfer measured in a series of recent landmark experiments. Taking a quantum mechanical perspective can help capture the salient features of the efficient part of that transfer. To show the versatility of the model, we extend it to a multiple minima system comprising seven-sites, reminiscent of the widely studied Fenna-Matthews-Olson (FMO) light-harvesting complex. We show that an idealised transport model for multiple minima coupled to a narrow-band phonon can transport energy with arbitrarily high efficiency. |
| first_indexed | 2024-03-07T02:28:22Z |
| format | Journal article |
| id | oxford-uuid:a6651f15-ea60-4ff7-91a8-3394c60b38d3 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:28:22Z |
| publishDate | 2014 |
| publisher | Nature Publishing Group |
| record_format | dspace |
| spelling | oxford-uuid:a6651f15-ea60-4ff7-91a8-3394c60b38d32022-03-27T02:47:02ZScale-estimation of quantum coherent energy transport in multiple-minima systems.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a6651f15-ea60-4ff7-91a8-3394c60b38d3Theoretical physicsQuantum information processingEnglishSymplectic Elements at OxfordNature Publishing Group2014Farrow, TVedral, VA generic and intuitive model for coherent energy transport in multiple minima systems coupled to a quantum mechanical bath is shown. Using a simple spin-boson system, we illustrate how a generic donor-acceptor system can be brought into resonance using a narrow band of vibrational modes, such that the transfer efficiency of an electron-hole pair (exciton) is made arbitrarily high. Coherent transport phenomena in nature are of renewed interest since the discovery that a photon captured by the light-harvesting complex (LHC) in photosynthetic organisms can be conveyed to a chemical reaction centre with near-perfect efficiency. Classical explanations of the transfer use stochastic diffusion to model the hopping motion of a photo-excited exciton. This accounts inadequately for the speed and efficiency of the energy transfer measured in a series of recent landmark experiments. Taking a quantum mechanical perspective can help capture the salient features of the efficient part of that transfer. To show the versatility of the model, we extend it to a multiple minima system comprising seven-sites, reminiscent of the widely studied Fenna-Matthews-Olson (FMO) light-harvesting complex. We show that an idealised transport model for multiple minima coupled to a narrow-band phonon can transport energy with arbitrarily high efficiency. |
| spellingShingle | Theoretical physics Quantum information processing Farrow, T Vedral, V Scale-estimation of quantum coherent energy transport in multiple-minima systems. |
| title | Scale-estimation of quantum coherent energy transport in multiple-minima systems. |
| title_full | Scale-estimation of quantum coherent energy transport in multiple-minima systems. |
| title_fullStr | Scale-estimation of quantum coherent energy transport in multiple-minima systems. |
| title_full_unstemmed | Scale-estimation of quantum coherent energy transport in multiple-minima systems. |
| title_short | Scale-estimation of quantum coherent energy transport in multiple-minima systems. |
| title_sort | scale estimation of quantum coherent energy transport in multiple minima systems |
| topic | Theoretical physics Quantum information processing |
| work_keys_str_mv | AT farrowt scaleestimationofquantumcoherentenergytransportinmultipleminimasystems AT vedralv scaleestimationofquantumcoherentenergytransportinmultipleminimasystems |