Wigner-function formalism for the detection of single microwave pulses in a resonator-coupled double quantum dot
Zenelaj, Drilon LU
; Samuelsson, Peter
LU
and Potts, Patrick P.
(2025)
In Physical Review Research
7(1).
- Abstract
- Semiconductor double quantum dots (DQD) coupled to superconducting microwave resonators offer a promising platform for the detection of single microwave photons. In previous works, the photodetection was studied for a monochromatic source of microwave photons. Here, we theoretically analyze the photodetection of single microwave pulses. The photodetection in this case can be seen as a nonlinear filtering process of an incoming signal, the pulse, to an outgoing one, the photocurrent. This analogy to signal processing motivated the derivation of a Wigner-function formalism which provides a compelling visualization of the time and frequency properties of the photodetector for low intensities. We find a trade-off between detecting the time and... (More)
- Semiconductor double quantum dots (DQD) coupled to superconducting microwave resonators offer a promising platform for the detection of single microwave photons. In previous works, the photodetection was studied for a monochromatic source of microwave photons. Here, we theoretically analyze the photodetection of single microwave pulses. The photodetection in this case can be seen as a nonlinear filtering process of an incoming signal, the pulse, to an outgoing one, the photocurrent. This analogy to signal processing motivated the derivation of a Wigner-function formalism which provides a compelling visualization of the time and frequency properties of the photodetector for low intensities. We find a trade-off between detecting the time and the frequency of the incoming photons, in agreement with the time-energy uncertainty relation. As the intensity of the source increases, the photodetection is influenced by coherent Rabi oscillations of the DQD. Our findings give insight into the time-dependent properties of microwave photons interacting with electrons in a DQD-resonator hybrid system and provide guidance for experiments on single microwave pulse detection. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1df40efe-9eb7-4ec4-8517-cff1713c2b05
- author
- Zenelaj, Drilon
LU
; Samuelsson, Peter
LU
and Potts, Patrick P.
- organization
- publishing date
- 2025-03-24
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Research
- volume
- 7
- issue
- 1
- article number
- 013305
- pages
- 17 pages
- publisher
- American Physical Society
- external identifiers
-
- scopus:105000844185
- ISSN
- 2643-1564
- DOI
- 10.1103/PhysRevResearch.7.013305
- language
- English
- LU publication?
- yes
- id
- 1df40efe-9eb7-4ec4-8517-cff1713c2b05
- date added to LUP
- 2025-03-31 15:53:12
- date last changed
- 2025-04-04 14:37:40
@article{1df40efe-9eb7-4ec4-8517-cff1713c2b05,
abstract = {{Semiconductor double quantum dots (DQD) coupled to superconducting microwave resonators offer a promising platform for the detection of single microwave photons. In previous works, the photodetection was studied for a monochromatic source of microwave photons. Here, we theoretically analyze the photodetection of single microwave pulses. The photodetection in this case can be seen as a nonlinear filtering process of an incoming signal, the pulse, to an outgoing one, the photocurrent. This analogy to signal processing motivated the derivation of a Wigner-function formalism which provides a compelling visualization of the time and frequency properties of the photodetector for low intensities. We find a trade-off between detecting the time and the frequency of the incoming photons, in agreement with the time-energy uncertainty relation. As the intensity of the source increases, the photodetection is influenced by coherent Rabi oscillations of the DQD. Our findings give insight into the time-dependent properties of microwave photons interacting with electrons in a DQD-resonator hybrid system and provide guidance for experiments on single microwave pulse detection.}},
author = {{Zenelaj, Drilon and Samuelsson, Peter and Potts, Patrick P.}},
issn = {{2643-1564}},
language = {{eng}},
month = {{03}},
number = {{1}},
publisher = {{American Physical Society}},
series = {{Physical Review Research}},
title = {{Wigner-function formalism for the detection of single microwave pulses in a resonator-coupled double quantum dot}},
url = {{http://dx.doi.org/10.1103/PhysRevResearch.7.013305}},
doi = {{10.1103/PhysRevResearch.7.013305}},
volume = {{7}},
year = {{2025}},
}