Nonlocal transport properties of nanoscale conductor-microwave cavity systems
(2013) In Physical Review B (Condensed Matter and Materials Physics) 87(19).- Abstract
- Recent experimental progress in coupling nanoscale conductors to superconducting microwave cavities has opened up for transport investigations of the deep quantum limit of light-matter interactions, with tunneling electrons strongly coupled to individual cavity photons. We have investigated theoretically the most basic cavity-conductor system with strong, single photon induced nonlocal transport effects: two spatially separated double quantum dots (DQDs) resonantly coupled to the fundamental cavity mode. The system, described by a generalized Tavis-Cummings model, is investigated within a quantum master equation formalism, allowing us to account for both the electronic transport properties through the DQDs as well as the coherent,... (More)
- Recent experimental progress in coupling nanoscale conductors to superconducting microwave cavities has opened up for transport investigations of the deep quantum limit of light-matter interactions, with tunneling electrons strongly coupled to individual cavity photons. We have investigated theoretically the most basic cavity-conductor system with strong, single photon induced nonlocal transport effects: two spatially separated double quantum dots (DQDs) resonantly coupled to the fundamental cavity mode. The system, described by a generalized Tavis-Cummings model, is investigated within a quantum master equation formalism, allowing us to account for both the electronic transport properties through the DQDs as well as the coherent, nonequilibrium cavity photon state. We find sizable nonlocally induced current and current cross-correlations mediated by individual photons. From a full statistical description of the electron transport we further reveal a dynamical channel blockade in one DQD lifted by photon emission due to tunneling through the other DQD. Moreover, large entanglement between the orbital states of electrons in the two DQDs is found for small DQD-lead temperatures. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3932214
- author
- Bergenfeldt, Christian LU and Samuelsson, Peter LU
- organization
- publishing date
- 2013
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B (Condensed Matter and Materials Physics)
- volume
- 87
- issue
- 19
- article number
- 195427
- publisher
- American Physical Society
- external identifiers
-
- wos:000319057100003
- scopus:84877914682
- ISSN
- 1098-0121
- DOI
- 10.1103/PhysRevB.87.195427
- language
- English
- LU publication?
- yes
- id
- 99d8464e-7e71-4aac-90b6-5a43e7c85274 (old id 3932214)
- date added to LUP
- 2016-04-01 14:58:22
- date last changed
- 2023-09-03 21:33:41
@article{99d8464e-7e71-4aac-90b6-5a43e7c85274,
abstract = {{Recent experimental progress in coupling nanoscale conductors to superconducting microwave cavities has opened up for transport investigations of the deep quantum limit of light-matter interactions, with tunneling electrons strongly coupled to individual cavity photons. We have investigated theoretically the most basic cavity-conductor system with strong, single photon induced nonlocal transport effects: two spatially separated double quantum dots (DQDs) resonantly coupled to the fundamental cavity mode. The system, described by a generalized Tavis-Cummings model, is investigated within a quantum master equation formalism, allowing us to account for both the electronic transport properties through the DQDs as well as the coherent, nonequilibrium cavity photon state. We find sizable nonlocally induced current and current cross-correlations mediated by individual photons. From a full statistical description of the electron transport we further reveal a dynamical channel blockade in one DQD lifted by photon emission due to tunneling through the other DQD. Moreover, large entanglement between the orbital states of electrons in the two DQDs is found for small DQD-lead temperatures.}},
author = {{Bergenfeldt, Christian and Samuelsson, Peter}},
issn = {{1098-0121}},
language = {{eng}},
number = {{19}},
publisher = {{American Physical Society}},
series = {{Physical Review B (Condensed Matter and Materials Physics)}},
title = {{Nonlocal transport properties of nanoscale conductor-microwave cavity systems}},
url = {{http://dx.doi.org/10.1103/PhysRevB.87.195427}},
doi = {{10.1103/PhysRevB.87.195427}},
volume = {{87}},
year = {{2013}},
}