Non-equilibrium thermodynamics in a single-molecule quantum system
Thermodynamic probes can be used to deduce microscopic internal dynamics of nanoscale quantum systems. Several direct entropy measurement protocols based on charge transport measurements have been proposed and experimentally applied to single-electron devices. To date, these methods have relied on (...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2023-01-01
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| Series: | Materials for Quantum Technology |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2633-4356/accd3a |
| _version_ | 1797838453279293440 |
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| author | E Pyurbeeva J O Thomas J A Mol |
| author_facet | E Pyurbeeva J O Thomas J A Mol |
| author_sort | E Pyurbeeva |
| collection | DOAJ |
| description | Thermodynamic probes can be used to deduce microscopic internal dynamics of nanoscale quantum systems. Several direct entropy measurement protocols based on charge transport measurements have been proposed and experimentally applied to single-electron devices. To date, these methods have relied on (quasi-)equilibrium conditions between the nanoscale quantum system and its environment, which constitutes only a small subset of the experimental conditions available. In this paper, we establish a thermodynamic analysis method based on stochastic thermodynamics, that is valid far from equilibrium conditions, is applicable to a broad range of single-electron devices and allows us to find the difference in entropy between the charge states of the nanodevice, as well as a characteristic of any selection rules governing electron transfers. We apply this non-equilibrium entropy measurement protocol to a single-molecule device in which the internal dynamics can be described by a two-site Hubbard model. |
| first_indexed | 2024-04-09T15:42:13Z |
| format | Article |
| id | doaj.art-96028824913b4ddab560a438b8efc20b |
| institution | Directory Open Access Journal |
| issn | 2633-4356 |
| language | English |
| last_indexed | 2024-04-09T15:42:13Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials for Quantum Technology |
| spelling | doaj.art-96028824913b4ddab560a438b8efc20b2023-04-27T07:58:23ZengIOP PublishingMaterials for Quantum Technology2633-43562023-01-013202500310.1088/2633-4356/accd3aNon-equilibrium thermodynamics in a single-molecule quantum systemE Pyurbeeva0https://orcid.org/0000-0002-5521-4458J O Thomas1https://orcid.org/0000-0003-1959-1675J A Mol2https://orcid.org/0000-0003-0411-2598School of Physical and Chemical Sciences, Queen Mary University of London , Mile End Road, London E1 4NS, United KingdomDepartment of Materials, University of Oxford , Parks Road, Oxford OX1 3PH, United KingdomSchool of Physical and Chemical Sciences, Queen Mary University of London , Mile End Road, London E1 4NS, United KingdomThermodynamic probes can be used to deduce microscopic internal dynamics of nanoscale quantum systems. Several direct entropy measurement protocols based on charge transport measurements have been proposed and experimentally applied to single-electron devices. To date, these methods have relied on (quasi-)equilibrium conditions between the nanoscale quantum system and its environment, which constitutes only a small subset of the experimental conditions available. In this paper, we establish a thermodynamic analysis method based on stochastic thermodynamics, that is valid far from equilibrium conditions, is applicable to a broad range of single-electron devices and allows us to find the difference in entropy between the charge states of the nanodevice, as well as a characteristic of any selection rules governing electron transfers. We apply this non-equilibrium entropy measurement protocol to a single-molecule device in which the internal dynamics can be described by a two-site Hubbard model.https://doi.org/10.1088/2633-4356/accd3aHubbard dimerquantum transportentropy measurementsfluctuation relations |
| spellingShingle | E Pyurbeeva J O Thomas J A Mol Non-equilibrium thermodynamics in a single-molecule quantum system Materials for Quantum Technology Hubbard dimer quantum transport entropy measurements fluctuation relations |
| title | Non-equilibrium thermodynamics in a single-molecule quantum system |
| title_full | Non-equilibrium thermodynamics in a single-molecule quantum system |
| title_fullStr | Non-equilibrium thermodynamics in a single-molecule quantum system |
| title_full_unstemmed | Non-equilibrium thermodynamics in a single-molecule quantum system |
| title_short | Non-equilibrium thermodynamics in a single-molecule quantum system |
| title_sort | non equilibrium thermodynamics in a single molecule quantum system |
| topic | Hubbard dimer quantum transport entropy measurements fluctuation relations |
| url | https://doi.org/10.1088/2633-4356/accd3a |
| work_keys_str_mv | AT epyurbeeva nonequilibriumthermodynamicsinasinglemoleculequantumsystem AT jothomas nonequilibriumthermodynamicsinasinglemoleculequantumsystem AT jamol nonequilibriumthermodynamicsinasinglemoleculequantumsystem |