##### Graphene-based Josephson junction microwave bolometer
Sensitive microwave detectors are critical instruments in radioastronomy, dark matter axion searches, and superconducting quantum information science. The conventional strategy towards higher-sensitivity bolometry is to nanofabricate an ever-smaller device to augment the thermal response. However, this direction is increasingly more difficult to obtain efficient photon coupling and maintain the material properties in a device with a large surface-to-volume ratio. Here we advance this concept to an ultimately thin bolometric sensor based on monolayer graphene. To utilize its minute electronic specific heat and thermal conductivity, we develop a superconductor-graphene-superconductor (SGS) Josephson junction bolometer embedded in a microwave resonator of resonant frequency 7.9 GHz with over 99\% coupling efficiency. From the dependence of the Josephson switching current on the operating temperature, charge density, input power, and frequency, we demonstrate a noise equivalent power (NEP) of 7 $\times 10^{-19}$ W/Hz$^{1/2}$, corresponding to an energy resolution of one single photon at 32 GHz and reaching the fundamental limit imposed by intrinsic thermal fluctuation at 0.19 K.
###### NurtureToken New!

Token crowdsale for this paper ends in

###### Authors

Are you an author of this paper? Check the Twitter handle we have for you is correct.

###### Subcategories

#1. Which part of the paper did you read?

#2. The paper contains new data or analyses that is openly accessible?
#3. The conclusion is supported by the data and analyses?
#4. The conclusion is of scientific interest?
#5. The result is likely to lead to future research?

User:
Repo:
Stargazers:
0
Forks:
0
Open Issues:
0
Network:
0
Subscribers:
0
Language:
None
Views:
0
Likes:
0
Dislikes:
0
Favorites:
0
0
###### Other
Sample Sizes (N=):
Inserted:
Words Total:
Words Unique:
Source:
Abstract:
None
09/12/19 06:05PM
5,411
1,940
###### Tweets
enkayenerji: RT @kimlikci_954: Graphene-based Josephson junction microwave bolometer https://t.co/5b6kryXwzI Kızılötesi Termal Dedektörler de (ASELSAN'ı…
kimlikci_954: Graphene-based Josephson junction microwave bolometer https://t.co/5b6kryXwzI Kızılötesi Termal Dedektörler de (ASELSAN'ın da termal nişangahlarda kullandığı) kullanılan mikrobolometreler ve konuyla ilgili grafen bazlı uygulamalar
CondensedPapers: Graphene-based Josephson junction microwave bolometer. https://t.co/zkFX8ErBdQ