Article
Mathematics, Interdisciplinary Applications
L. S. Revin, A. L. Pankratov
Summary: This study investigates the double-peaked switching current distributions of a long Josephson junction under asymmetrical bias feed profile, showing the formation of solitons at opposite junction edges. System parameters such as junction length, noise intensity, and bias feed inhomogeneity are discussed to explain the atypical distribution of switching currents in YBCO junctions.
CHAOS SOLITONS & FRACTALS
(2021)
Article
Mathematics, Interdisciplinary Applications
A. S. Piedjou Komnang, C. Guarcello, C. Barone, C. Gatti, S. Pagano, V Pierro, A. Rettaroli, G. Filatrella
Summary: This study investigates an optimal scheme for detecting single microwave photons through the analysis of Josephson junction switching times distribution. By comparing the switching probabilities of the junction under current pulses exposure with and without pulses, the efficiency of the detection can be estimated. Additionally, a relationship between photon field properties, quantum efficiency of the detection process, and Josephson junction switching features at finite temperatures can be established.
CHAOS SOLITONS & FRACTALS
(2021)
Article
Chemistry, Multidisciplinary
Shujie Yu, Lei Chen, Yinping Pan, Yue Wang, Denghui Zhang, Guangting Wu, Xinxin Fan, Xiaoyu Liu, Ling Wu, Lu Zhang, Wei Peng, Jie Ren, Zhen Wang
Summary: Recent studies have shown that the critical currents of metallic superconducting nanowires and Dayem bridges can be locally tuned using a gate voltage. In this study, a gate-tunable Josephson junction structure was reported, constructed from a three-dimensional niobium nanobridge junction with a voltage gate on top. The critical current of this structure can be tuned to zero by increasing the gate voltage, and the flux modulation generated by Josephson interference can also be tuned in a similar manner. Therefore, this gate-tunable Josephson junction structure shows promise for high integration level superconducting circuit fabrication.
Article
Physics, Applied
C. Guarcello, F. S. Bergeret, R. Citro
Summary: This study investigates the switching current distributions of ferromagnetic anomalous Josephson junctions under a linearly increasing bias current and uncovers a significant correlation between the position of the switching current distributions and crucial system parameters such as the strength of the spin-orbit coupling and the Gilbert damping parameter. By conducting a comprehensive analysis of the interplay among noise, magnetization, phase dynamics, and the statistical properties of the switching current distribution, a deeper understanding of these intriguing cryogenic spintronics devices is achieved.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Multidisciplinary
Sheng-li Ma, Ji-kun Xie, Ya-long Ren, Xin-ke Li, Fu-li Li
Summary: We propose a method to generate photon-pair blockade in a Josephson-photonics circuit by utilizing a combination of a superconducting charge qubit and two nondegenerate microwave resonators. The two resonators release their energies in the form of strongly correlated pairs of photons when the Josephson frequency matches the resonance frequencies of the qubit and resonators. This study provides a practical approach for producing a bright microwave source of antibunched photon pairs, with potential applications in spectroscopy, metrology, and quantum information processing.
NEW JOURNAL OF PHYSICS
(2022)
Article
Quantum Science & Technology
Vasily S. Stolyarov, Dimitri Roditchev, Vladimir L. Gurtovoi, Sergey N. Kozlov, Dmitriy S. Yakovlev, Olga V. Skryabina, Valerii M. Vinokur, Alexander A. Golubov
Summary: This study reports a new type of oscillations in the critical Josephson current of the ballistic Nb-Bi2Te2.3Se0.7-Nb junctions under magnetic fields. These oscillations have a very unusual sharp-peaked shape and an ultra-short period. It is established that this effect is due to the resonant transmission of Andreev quasiparticles via peculiar energy levels forming near the S-TI interfaces.
ADVANCED QUANTUM TECHNOLOGIES
(2022)
Article
Mathematics, Interdisciplinary Applications
C. Guarcello, F. S. Bergeret
Summary: The study discusses the impact of thermal noise on the magnetic response of a lateral ferromagnetic Josephson junction with spin-orbit coupling and out-of-plane magnetization. It explores the phenomenon of inverting the magnetic moment direction in the ferromagnetic layer using controlled current pulses, and evaluates the magnetization reversal effect relative to intrinsic parameters. Furthermore, the research aims to increase the operation temperature and investigate the effects of thermal fluctuations on the system's noise resistance by finding optimal parameter values.
CHAOS SOLITONS & FRACTALS
(2021)
Article
Physics, Multidisciplinary
Han Wang, Rui Shen
Summary: The effect of off-resonant circularly polarized light on Josephson current in time-reversal broken superconducting Weyl semimetal junctions is investigated. The study considers both zero momentum BCS pairing states and finite momentum FFLO pairing states for Weyl superconductors. It is shown that the current phase relation remains unchanged for BCS pairing, while Josephson current exhibits 0-pi transition and periodic oscillation for FFLO pairing with increasing incident radiation intensity A (0).
Article
Nanoscience & Nanotechnology
Andrey L. Pankratov, Anna Gordeeva, Leonid S. Revin, Dmitry A. Ladeynov, Anton A. Yablokov, Leonid S. Kuzmin
Summary: In this study, we experimentally tested the suitability of an aluminium Josephson junction with a few micrometers size as a single photon counter in the microwave frequency range. By measuring the switching from the superconducting to the resistive state through the absorption of 10 GHz photons, we found that the switching is initiated by the simultaneous absorption of three and more photons, with a dark count time above 0.01 s.
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2022)
Article
Physics, Condensed Matter
Long Liu, Sutao Sun, Yunchang Huo, Shuang Li, Tiwen Han
Summary: By investigating a hybrid four-terminal Josephson junction, we found that under specific conditions, a 4 pi-periodic current can be observed through the normal terminal, while a 2 pi-periodic current can be observed through the superconducting terminal.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Physics, Condensed Matter
F. R. Araujo, D. R. da Costa, F. N. Lima, A. C. S. Nascimento, J. M. Pereira
Summary: This study investigates the ballistic transport of electrons through three-terminal graphene-based devices by controlling the refractive index in graphene p-n junctions. Utilizing the Landauer-Buttiker formalism and a tight-binding model, the research demonstrates that the applied electric field can tune the current transmission, effectively turning the system into a current switch.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2021)
Article
Physics, Multidisciplinary
Meng Hao, Xiu-Qiang Wu
Summary: Based on the Bogoliubov-de Gennes equations, the transport of Josephson current in a one-dimensional S/FL-F-FR/S junction is investigated. The study reveals that the magnetizations at the interfaces can induce spin-mixing and spin-flip effects, leading to oscillatory behaviors of the critical current.
ACTA PHYSICA SINICA
(2023)
Article
Physics, Multidisciplinary
Yin Zhang, Ping Zhou, Jun Tang, Jun Ma
Summary: Josephson junction is an active electric component that can adjust channel current by external magnetic field, used to excite neural circuit for generating target firing patterns. This paper explores the potential application of Josephson junction in nonlinear circuits by connecting it to a simple neural circuit for sensing external magnetic field.
CHINESE JOURNAL OF PHYSICS
(2021)
Article
Physics, Multidisciplinary
Paramita Dutta
Summary: In this study, we investigate the phase-dependent charge and heat current in short Josephson junctions (JJs) formed at helical edge states of two-dimensional topological insulators. The transmission spectra exhibit an asymmetry around the zero energy for all finite phases, except for a specific phase value. The asymmetry induced by phase plays a significant role in the charge and heat current, but the current amplitudes are sensitive to the junction size.
NEW JOURNAL OF PHYSICS
(2023)
Article
Physics, Condensed Matter
Long Liu, Pengyue Zhang, Sutao Sun, Zhen Cao, Lulu Zhao
Summary: In this study, we investigate the impact of Majorana zero modes (MZMs) on the Josephson current at each terminal in a hybrid four-terminal Josephson junction with topological nanowires. We found that, when a pair of well-separated MZMs exist in all nanowires, a 4π-periodic current can be observed through the normal terminal and a 2π-periodic current through the superconducting terminal at high applied voltage. We further demonstrate that, as the number of topological nanowires decreases, the characteristic intensity of the 4π periodic current in the normal terminal becomes increasingly blurred, until there are no MZMs in the junction, and the current periodicity of each terminal becomes 2π.
SOLID STATE COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Leonid Kuzmin, D. S. Golubev
Summary: An optimized concept of the Cold-Electron Bolometer (CEB) with Superconductor-Insulator-Normal (SIN) Tunnel Junction and Andreev SN contact for voltage-bias mode has been developed. A novel concept of the quasiparticle cascade amplifier (QCA) based on harvesting the waste energy of relaxed quasiparticles without any additional voltage bias has been developed. The amplifier is based on the optimized CEB with one SIN junction and one SN contact.
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY
(2022)
Article
Nanoscience & Nanotechnology
Egor Glushkov, Alexander Chiginev, Leonid S. Kuzmin, Leonid S. Revin
Summary: In this study, a model of a broadband receiving system based on a meander series of Josephson YBaCuO grain boundary junctions integrated into a log-periodic antenna was developed. The electromagnetic properties of the system were investigated, and a numerical simulation of one-dimensional arrays was carried out. The performance of the detector, including current-voltage characteristic, responsivity, noise, and NEP, was calculated. The results showed that using a series of junctions can significantly improve the responsivity, NEP value, and power dynamic range.
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2022)
Article
Quantum Science & Technology
A. L. Pankratov, L. S. Revin, A. V. Gordeeva, A. A. Yablokov, L. S. Kuzmin, E. Il'ichev
Summary: The detection of axions or axion-like particles is a major task that faces the challenges of achieving ultimate sensitivity and low dark count rate. By studying the switching dynamics of an underdamped Josephson junction, this trade-off can be approached, leading to efficient detection of a few photons' energy.
NPJ QUANTUM INFORMATION
(2022)
Article
Nanoscience & Nanotechnology
Andrey L. Pankratov, Anna Gordeeva, Leonid S. Revin, Dmitry A. Ladeynov, Anton A. Yablokov, Leonid S. Kuzmin
Summary: In this study, we experimentally tested the suitability of an aluminium Josephson junction with a few micrometers size as a single photon counter in the microwave frequency range. By measuring the switching from the superconducting to the resistive state through the absorption of 10 GHz photons, we found that the switching is initiated by the simultaneous absorption of three and more photons, with a dark count time above 0.01 s.
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2022)
Biographical-Item
Physics, Applied
Alexel Kalaboukhov, Oleg V. Snigirev, Andrey L. Pankratov, Dag Winkler, Tord Claeson, Konstantin K. Likharev, Sergey Kubatkin
JOURNAL OF LOW TEMPERATURE PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Leonid S. Revin, Dmitry V. Masterov, Alexey E. Parafin, Sergey A. Pavlov, Dmitry A. Pimanov, Alexander V. Chiginev, Anton V. Blagodatkin, Igor V. Rakut, Evgenii V. Skorokhodov, Anna V. Gordeeva, Andrey L. Pankratov
Summary: This article discusses the measurement of the resonant properties of CEBs at different temperatures using YBCO Josephson oscillators of various lengths and frequencies to verify the feasibility of the method.
APPLIED SCIENCES-BASEL
(2022)
Article
Mathematics, Interdisciplinary Applications
E. A. Matrozova, A. L. Pankratov
Summary: In this study, we investigate the mutual effects of soliton dynamics and noise in a chain of Josephson junctions using the Frenkel-Kontorova model. By analyzing experimentally relevant quantities such as oscillation power and spectral linewidth, we are able to derive the power spectral density of the system and study its integral and width. We consider factors such as ohmic and surface losses, bias inhomogeneity, external magnetic fields, and show that increasing system discreteness leads to a reduction in oscillation power and an increase in spectral linewidth, indicating an increase in total noise in the system. Drastic increases in linewidth are observed when the distance between elements becomes comparable to the soliton size, attributed to increased stochasticity from soliton reflections and noise.
CHAOS SOLITONS & FRACTALS
(2023)
Article
Mathematics, Interdisciplinary Applications
D. A. Ladeynov, D. G. Egorov, A. L. Pankratov
Summary: The Josephson junction is investigated as a threshold detector for weak signal detection in the presence of noise and a weak external signal. It is found that a range of parameters are efficient for weak signal detection. In the low noise limit, the signal can be enhanced through dynamic resonant activation mechanism, and even weaker signals can be efficiently detected with the help of noise via stochastic resonant activation mechanism. The parameter optimizations of a microwave single photon counter prototype based on aluminum Josephson junction are discussed.
CHAOS SOLITONS & FRACTALS
(2023)
