Experimental demonstrations of Josephson threshold detectors for broadband microwave photons detection

• URL: http://arxiv.org/abs/2502.14300v1
• Date: Thu, 20 Feb 2025 06:31:05 GMT
• Title: Experimental demonstrations of Josephson threshold detectors for broadband microwave photons detection
• Authors: Jia-Xing He, Ya-Qiang Chai, Peng-Hui Ouyang, Hong Chang, L. F. Wei,
• Abstract summary: Current-biased Josephson junctions (CBJJs) have been demonstrated as sensitive Josephson threshold detectors (JTDs) in the infrared range. We show this kind of detector could also be used to detect broadband microwave photons.
• Score: 12.926713034756862
• License:
• Abstract: Current-biased Josephson junctions (CBJJs) have been demonstrated as sensitive Josephson threshold detectors (JTDs) in the infrared range. In this letter, we show this kind of detector could also be used to detect broadband microwave photons. Based on the numerical simulations of the noise-driving phase dynamics of an underdamped Josephson junction, driven by the low-frequency triangular wave current, we argue that the microwave photons flowing across the JJ can be detected by probing the voltage switched signals of the JJ. Experimentally, we designed and fabricated the relevant Al/AlOx/Al Josephson device and measured its response to microwave photons at 50~mK temperature. Experimental results indicate that the weak microwave signals could be threatened as the additional noises modify the phase dynamics of the CBJJ, which could thus be detected by the generated JTD. The detection sensitivity is characterized by using the Kumar-Caroll index to differentiate the junction switched duration distributions, with and without microwave signal input. Although the demonstrated detection sensitivity is just $-92$~dBm (corresponding to approximately 30~photon/ns) for the microwave photons at $\sim 5$GHz (which is manifestly deviated from the plasma frequency of the fabricated JJ), we argued, based on the relevant numerical simulations, that the generated JTD could be used to achieve the sensitive detection of the microwave photons at the plasma frequency of the JJ.

Related papers

• A New Bite Into Dark Matter with the SNSPD-Based QROCODILE Experiment [55.46105000075592]
  We present the first results from the Quantum Resolution-d Cryogenic Observatory for Dark matter Incident at Low Energy (QROCODILE) The QROCODILE experiment uses a microwire-based superconducting nanowire single-photon detector (SNSPD) as a target and sensor for dark matter scattering and absorption. We report new world-leading constraints on the interactions of sub-MeV dark matter particles with masses as low as 30 keV.
  arXiv  Detail & Related papers  (2024-12-20T19:00:00Z)
• In-situ electro-optic sampling of microwave signals under cryogenic conditions and for superconducting applications [31.874825130479174]
  We demonstrate a cryogenic electro-optic sampling (EOS) setup that allows for the measurement of microwave signals at arbitrary positions. We use a Josephson Arbitrary Waveform Synthesizer (JAWS) to generate quantum-accurate voltage signals and measure them with the EOS setup. We use the EOS setup to determine the time-domain response of ultrafast cryogenic photodiodes and the electrical coefficient reflection, i.e., the S11 scattering parameter, in a superconducting transmission line.
  arXiv  Detail & Related papers  (2024-10-31T19:10:48Z)
• Approaching energy quantum limit detection of microwave photons with Josephson Junctions [0.0]
  Single-photon detection is an energy quantum limit detection (EQLD) of a significantly weak electromagnetic wave. We analyze the possibility of approaching the EQLD of the weak microwave signal by using a current-biased Josephson Junction (CBJJ) detector.
  arXiv  Detail & Related papers  (2024-10-31T14:03:07Z)
• Josephson microwave photon detector operating at 0.7 K [36.136619420474766]
  threshold detectors based on Al Josephson junctions with critical currents below 100 nA can be exploited for microwave photon detection. We demonstrate a detection of two- and one-photon energies at 5 GHz with 90% and 15% efficiency and dark count time of about 0.1 s and 0.01 s, respectively.
  arXiv  Detail & Related papers  (2024-05-07T15:49:21Z)
• Bolometric detection of Josephson radiation [0.0]
  The bolometer converts ac Josephson current at microwave frequencies, up to about $100,$GHz, into a measurable dc temperature rise. The present experiment demonstrates an efficient, wide-band, thermal detection scheme of microwave photons and provides a sensitive detector of Josephson dynamics.
  arXiv  Detail & Related papers  (2024-02-14T17:06:45Z)
• Design and simulation of a transmon qubit chip for Axion detection [103.69390312201169]
  Device based on superconducting qubits has been successfully applied in detecting few-GHz single photons via Quantum Non-Demolition measurement (QND) In this study, we present Qub-IT's status towards the realization of its first superconducting qubit device.
  arXiv  Detail & Related papers  (2023-10-08T17:11:42Z)
• A highly-sensitive broadband superconducting thermoelectric single-photon detector [62.997667081978825]
  A thermoelectric detector (TED) converts a finite temperature difference caused by the absorption of a single photon into an open circuit thermovoltage. Our TED is able to reveal single-photons of frequency ranging from about 15 GHz to about 150 PHz depending on the chosen design and materials.
  arXiv  Detail & Related papers  (2023-02-06T17:08:36Z)
• Measurements of blackbody radiation-induced transition rates between high-lying S, P and D Rydberg levels [47.187609203210705]
  We report experimental measurements of the rates of blackbody radiation-induced transitions between high-lying (n>60) S, P and D Rydberg levels of rubidium atoms in a magneto-optical trap. Our results reveal significant deviations of the measured transition rates from theory for well-defined ranges of the principal quantum number. We conclude that it should be possible to use such external cavities to control and suppress the blackbody radiation-induced transitions.
  arXiv  Detail & Related papers  (2021-11-30T12:22:32Z)
• Temperature insensitive type II quasi-phasematched spontaneous parametric downconversion [62.997667081978825]
  The temperature dependence of the refractive indices of potassium titanyl phosphate (KTP) are shown to enable quasi-phasematched type II spontaneous parametric downconversion. We demonstrate the effect experimentally, observing temperature-insensitive degenerate emission at 1326nm, within the telecommunications O band. This result has practical applications in the development of entangled photon sources for resource-constrained environments.
  arXiv  Detail & Related papers  (2020-12-09T16:14:15Z)
• Josephson-junction infrared single-photon detector [0.305491665195957]
  Josephson junctions (JJs) are ubiquitous superconducting devices, enabling high sensitivity magnetometers and voltage amplifiers. We demonstrate single near-infrared photon detection by coupling photons to the localized surface plasmons of a graphene-based JJ. The photon-sensitive JJ will enable a high-speed, low-power optical interconnect for future JJ-based computing architectures.
  arXiv  Detail & Related papers  (2020-11-05T02:40:35Z)
• Position Sensitive Response of a Single-Pixel Large-Area SNSPD [58.720142291102135]
  Superconducting nanowire single photon detectors (SNSPDs) are typically used as single-mode-fiber-coupled single-pixel detectors. Large area detectors are increasingly critical for applications ranging from microscopy to free-space quantum communications. We explore changes in the rising edge of the readout pulse for large-area SNSPDs as a function of the bias current, optical spot size on the detector, and number of photons per pulse.
  arXiv  Detail & Related papers  (2020-05-29T23:33:11Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.