scholarly journals Towards the Heisenberg limit in microwave photon detection by a qubit array

2021 ◽  
Vol 103 (6) ◽  
Author(s):  
P. Navez ◽  
A. G. Balanov ◽  
S. E. Savel'ev ◽  
A. M. Zagoskin
Keyword(s):  
Photon Detection ◽  
Heisenberg Limit ◽  
Microwave Photon

scholarly journals Single microwave photon detection in the micromaser

2009 ◽  
Vol 42 (14) ◽  
pp. 145501 ◽  
Author(s):  
M L Jones ◽  
G J Wilkes ◽  
B T H Varcoe
Keyword(s):  
Photon Detection ◽  
Microwave Photon

scholarly journals Single Microwave Photon Detection with a Trapped Electron

Photonics ◽  
2016 ◽  
Vol 3 (4) ◽  
pp. 59 ◽  
Author(s):  
April Cridland ◽  
John Lacy ◽  
Jonathan Pinder ◽  
José Verdú
Keyword(s):  
Photon Detection ◽  
Microwave Photon ◽  
Trapped Electron

scholarly journals Microwave photon detection by an Al Josephson junction

2020 ◽  
Vol 11 ◽  
pp. 960-965 ◽  
Author(s):  
Leonid S Revin ◽  
Andrey L Pankratov ◽  
Anna V Gordeeva ◽  
Anton A Yablokov ◽  
Igor V Rakut ◽  
...  
Keyword(s):  
Josephson Junction ◽  
Single Photon ◽  
Photon Absorption ◽  
External Signal ◽  
Escape Time ◽  
Signal Attenuation ◽  
Threshold Detector ◽  
Photon Detection ◽  
Phase Diffusion ◽  
Microwave Photon

An aluminium Josephson junction (JJ), with a critical current suppressed by a factor of three compared with the maximal value calculated from the gap, is experimentally investigated for application as a threshold detector for microwave photons. We present the preliminary results of measurements of the lifetime of the superconducting state and the probability of switching by a 9 GHz external signal. We found an anomalously large lifetime, not described by the Kramers’ theory for the escape time over a barrier under the influence of fluctuations. We explain it by the phase diffusion regime, which is evident from the temperature dependence of the switching current histograms. Therefore, phase diffusion allows for a significant improvement of the noise immunity of a device, radically decreasing the dark count rate, but it will also decrease the single-photon sensitivity of the considered threshold detector. Quantization of the switching probability tilt as a function of the signal attenuation for various bias currents through the JJ is observed, which resembles the differentiation between N and N + 1 photon absorption.

scholarly journals Microwave photon detection by an Al Josephson junction

2020 ◽  
Author(s):  
Leonid S Revin ◽  
Andrey L Pankratov ◽  
Anna V Gordeeva ◽  
Anton A Yablokov ◽  
Igor V Rakut ◽  
...  
Keyword(s):  
Josephson Junction ◽  
Single Photon ◽  
Photon Absorption ◽  
External Signal ◽  
Escape Time ◽  
Signal Attenuation ◽  
Threshold Detector ◽  
Photon Detection ◽  
Phase Diffusion ◽  
Microwave Photon

The aluminum Josephson junction (JJ) with a critical current, suppressed by a factor of three comparing with the maximal value calculated from the gap, is experimentally investigated for application as a threshold detector of microwave photons. We present the preliminary results of measurements of the lifetime of the superconducting state and the probability of switching by 9 GHz external signal. We found an anomalously large lifetime, not described by the Kramers' theory for the escape time over a barrier under the influence of fluctuations. We explain it by the phase diffusion regime, which is evident from the temperature dependence of the switching current histograms. Therefore, the phase diffusion allows to significantly improve the noise immunity of a device, radically decreasing the dark count rate, but it will also decrease the single photon sensitivity of the considered threshold detector. Quantization of the switching probability tilt versus signal attenuation for various bias currents through the JJ is observed, which resembles the differentiation between N and N+1 photon absorption.

scholarly journals FIR and Microwave Photon Detection by Quantum Dots

2003 ◽  
Vol 72 (Suppl.A) ◽  
pp. 102-105 ◽  
Author(s):  
Oleg Astafiev ◽  
Takeshi Kutsuwa ◽  
Vladimir Antonov ◽  
Susumu Komiyama
Keyword(s):  
Quantum Dots ◽  
Photon Detection ◽  
Microwave Photon

Microwave photon detection scheme based on hybrid cavity system

2020 ◽  
Vol 131 (1) ◽  
pp. 14001
Author(s):  
Junwen Luo ◽  
Dewei Wu ◽  
Qiang Miao ◽  
Tianli Wei
Keyword(s):  
Photon Detection ◽  
Detection Scheme ◽  
Cavity System ◽  
Microwave Photon ◽  
Hybrid Cavity

scholarly journals Status of the SIMP Project: Toward the Single Microwave Photon Detection

2020 ◽  
Vol 199 (1-2) ◽  
pp. 348-354 ◽  
Author(s):  
D. Alesini ◽  
D. Babusci ◽  
C. Barone ◽  
B. Buonomo ◽  
M. M. Beretta ◽  
...  
Keyword(s):  
Photon Detection ◽  
Microwave Photon
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