Minimal excitation single-particle emitters : Comparison of charge-transport and energy-transport properties
(2019) In Physical Review B 100(3).- Abstract
We investigate different types of time-dependently driven single-particle sources whose common feature is that they produce pulses of integer charge and minimally excite the Fermi sea. These sources are: a slowly driven mesoscopic capacitor, a Lorentzian-shaped time-dependent bias voltage, and a local gate-voltage modulation of a quantum Hall edge state. They differ by their specific driving protocols, e.g., they have a pure ac driving or a driving with a dc component. In addition, only in the first of these setups, strong confinement leading to a discrete energy spectrum of the conductor, is exploited for the single-particle emission. Here, we study if and how these basic differences impact transport properties. Specifically, we... (More)
We investigate different types of time-dependently driven single-particle sources whose common feature is that they produce pulses of integer charge and minimally excite the Fermi sea. These sources are: a slowly driven mesoscopic capacitor, a Lorentzian-shaped time-dependent bias voltage, and a local gate-voltage modulation of a quantum Hall edge state. They differ by their specific driving protocols, e.g., they have a pure ac driving or a driving with a dc component. In addition, only in the first of these setups, strong confinement leading to a discrete energy spectrum of the conductor, is exploited for the single-particle emission. Here, we study if and how these basic differences impact transport properties. Specifically, we address time- and energy-resolved charge and energy currents, as well as their zero-frequency correlators (charge, energy, and mixed noise), as they are frequently used to characterize experiments in quantum optics with electrons. Beyond disparities due to a different number and polarity of particles emitted per period, we in particular identify differences in the impact, which temperature has on the observables for sources with and without energy-dependent scattering properties. We are able to characterize and quantify the effect of temperature by a small set of physically relevant parameter ratios.
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- author
- Dashti, Nastaran LU ; Misiorny, Maciej ; Kheradsoud, Sara LU ; Samuelsson, Peter LU and Splettstoesser, Janine
- organization
- publishing date
- 2019-07-03
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B
- volume
- 100
- issue
- 3
- article number
- 035405
- publisher
- American Physical Society
- external identifiers
-
- scopus:85070672150
- ISSN
- 2469-9950
- DOI
- 10.1103/PhysRevB.100.035405
- language
- English
- LU publication?
- yes
- additional info
- Funding Information: Funding from the Knut and Alice Wallenberg Foundation through the Academy Fellow program (J.S., N.D. and M.M.), from the EU ITN PhD4Energy, Grant No. 608153 (S.K.), and from the Swedish VR is gratefully acknowledged.
- id
- 6638fafa-af45-4769-8acb-c3e99a3bb8e4
- date added to LUP
- 2022-03-31 13:42:57
- date last changed
- 2023-11-15 22:24:49
@article{6638fafa-af45-4769-8acb-c3e99a3bb8e4,
abstract = {{<p>We investigate different types of time-dependently driven single-particle sources whose common feature is that they produce pulses of integer charge and minimally excite the Fermi sea. These sources are: a slowly driven mesoscopic capacitor, a Lorentzian-shaped time-dependent bias voltage, and a local gate-voltage modulation of a quantum Hall edge state. They differ by their specific driving protocols, e.g., they have a pure ac driving or a driving with a dc component. In addition, only in the first of these setups, strong confinement leading to a discrete energy spectrum of the conductor, is exploited for the single-particle emission. Here, we study if and how these basic differences impact transport properties. Specifically, we address time- and energy-resolved charge and energy currents, as well as their zero-frequency correlators (charge, energy, and mixed noise), as they are frequently used to characterize experiments in quantum optics with electrons. Beyond disparities due to a different number and polarity of particles emitted per period, we in particular identify differences in the impact, which temperature has on the observables for sources with and without energy-dependent scattering properties. We are able to characterize and quantify the effect of temperature by a small set of physically relevant parameter ratios.</p>}},
author = {{Dashti, Nastaran and Misiorny, Maciej and Kheradsoud, Sara and Samuelsson, Peter and Splettstoesser, Janine}},
issn = {{2469-9950}},
language = {{eng}},
month = {{07}},
number = {{3}},
publisher = {{American Physical Society}},
series = {{Physical Review B}},
title = {{Minimal excitation single-particle emitters : Comparison of charge-transport and energy-transport properties}},
url = {{http://dx.doi.org/10.1103/PhysRevB.100.035405}},
doi = {{10.1103/PhysRevB.100.035405}},
volume = {{100}},
year = {{2019}},
}