Single microwave photon counter based on current-biased Josephson junction

2021 ◽  
Author(s):  
Alessio Rettaroli ◽  
David Alesini ◽  
Danilo Babusci ◽  
Bruno Buonuomo ◽  
Matteo M. Beretta ◽  
...  
Keyword(s):  
Josephson Junction ◽  
Photon Counter ◽  
Microwave Photon

Detecting spins by their fluorescence with a microwave photon counter

Nature ◽  
2021 ◽  
Vol 600 (7889) ◽  
pp. 434-438
Author(s):  
Emanuele Albertinale ◽  
Léo Balembois ◽  
Eric Billaud ◽  
Vishal Ranjan ◽  
Daniel Flanigan ◽  
...  
Keyword(s):  
Photon Counter ◽  
Microwave Photon

Single Photon Counter Based on a Josephson Junction at 14 GHz for Searching Galactic Axions

2018 ◽  
Vol 28 (7) ◽  
pp. 1-5 ◽  
Author(s):  
Leonid S. Kuzmin ◽  
Alexander S. Sobolev ◽  
Claudio Gatti ◽  
Daniele Di Gioacchino ◽  
Nicolo Crescini ◽  
...  
Keyword(s):  
Josephson Junction ◽  
Single Photon ◽  
Photon Counter

scholarly journals Microwave Photon Counter Based on Josephson Junctions

2011 ◽  
Vol 107 (21) ◽  
Author(s):  
Y.-F. Chen ◽  
D. Hover ◽  
S. Sendelbach ◽  
L. Maurer ◽  
S. T. Merkel ◽  
...  
Keyword(s):  
Josephson Junctions ◽  
Photon Counter ◽  
Microwave Photon

Frequency-tuned microwave photon counter based on a superconductive quantum interferometer

2018 ◽  
Vol 44 (3) ◽  
pp. 213-220 ◽  
Author(s):  
V. I. Shnyrkov ◽  
Wu Yangcao ◽  
A. A. Soroka ◽  
O. G. Turutanov ◽  
V. Yu. Lyakhno
Keyword(s):  
Photon Counter ◽  
Quantum Interferometer ◽  
Microwave Photon

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 High-fidelity qubit measurement with a microwave-photon counter

2014 ◽  
Vol 90 (6) ◽  
Author(s):  
Luke C. G. Govia ◽  
Emily J. Pritchett ◽  
Canran Xu ◽  
B. L. T. Plourde ◽  
Maxim G. Vavilov ◽  
...  
Keyword(s):  
High Fidelity ◽  
Photon Counter ◽  
Microwave Photon

scholarly journals High-Fidelity Measurement of a Superconducting Qubit Using an On-Chip Microwave Photon Counter

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
A. Opremcak ◽  
C. H. Liu ◽  
C. Wilen ◽  
K. Okubo ◽  
B. G. Christensen ◽  
...  
Keyword(s):  
High Fidelity ◽  
Superconducting Qubit ◽  
Photon Counter ◽  
Microwave Photon ◽  
On Chip
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