Article
Nanoscience & Nanotechnology
Joydip Sarkar, Kishor Salunkhe, Supriya Mandal, Subhamoy Ghatak, Alisha H. Marchawala, Ipsita Das, Kenji Watanabe, Takashi Taniguchi, R. Vijay, Mandar M. Deshmukh
Summary: Josephson junctions (JJs) and their tunable properties are crucial for superconducting qubits and amplifiers. This study demonstrates a quantum-noise-limited Josephson parametric amplifier (JPA) using a graphene Josephson junction (JJ) with linear resonance gate tunability. The gate-tunable JPA exhibits high amplification performance and operates in the quantum-limited noise regime, making it an attractive option for sensitive signal processing.
NATURE NANOTECHNOLOGY
(2022)
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
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
Multidisciplinary Sciences
T. Brown, E. Doucet, D. Riste, G. Ribeill, K. Cicak, J. Aumentado, R. Simmonds, L. Govia, A. Kamal, L. Ranzani
Summary: In this study, the authors achieved fast and high-fidelity Bell state stabilization in a qutrit-qubit system using a protocol based on parametric system-bath coupling. By creating a purely dissipative channel, they achieved trade-off-free Bell state stabilization in terms of steady-state fidelity and stabilization rate.
NATURE COMMUNICATIONS
(2022)
Review
Nanoscience & Nanotechnology
Claire Deeb, Johann Toudert, Jean-Luc Pelouard
Summary: The optical and electrical characteristics of electrically-driven nanogap antennas are highly sensitive to the tightly confined nanogap region where electrons and photons interact. Electron tunneling across the nanogap can induce broadband photon emission and increase quantum efficiency. Additionally, overbias light emission can occur as a result of spontaneous emission from the hot electron distribution in the electrode. Overall, electrically controlled nanogap antennas show promise for faster on-chip communication.
Article
Physics, Applied
Gopika Lakshmi Bhai, Hiroto Mukai, Jaw-Shen Tsai
Summary: Injection locking is a well-established technique used to suppress noise in optics and solid-state devices. This study characterizes the spectroscopic effect of the injection-locking signal (ILS) on mitigating the phase noise of a Josephson parametric oscillator. By injecting a weak locking signal, the phase noise power spectral density of the self-sustained oscillator output state was measured. The results showed that injection locking can suppress phase noise and completely pin the output state to the locking phase of the ILS, leading to significant suppression of random telegraphic noise caused by state switching.
APPLIED PHYSICS LETTERS
(2023)
Article
Astronomy & Astrophysics
S. I. Alekhin, S. A. Kulagin, R. Petti
Summary: We present the findings of a global QCD analysis that incorporates deep-inelastic scattering data from 1H, 2H, 3H, and 3He targets. We account for nuclear corrections using a nuclear convolution approach with off-shell bound nucleons, including the off-shell corrections responsible for the modification of the bound nucleons' structure functions (SFs). These corrections are determined in a global fit, along with the proton parton distribution functions (PDFs) and higher-twist terms. We examine the differences between protons and neutrons in terms of the off-shell correction and discuss our predictions for the ratio of the SFs Fn2/Fp2 and the corresponding PDF ratio d/u in the proton, as well as their correlations with the treatment of higher-twist terms and off-shell corrections. Notably, we find that the recent MARATHON data support equal relative off-shell corrections for both protons and neutrons.
Article
Multidisciplinary Sciences
Anastasiya A. Pishchimova, Nikita S. Smirnov, Daria A. Ezenkova, Elizaveta A. Krivko, Evgeniy V. Zikiy, Dmitry O. Moskalev, Anton I. Ivanov, Nikita D. Korshakov, Ilya A. Rodionov
Summary: Josephson superconducting qubits and parametric amplifiers have made significant progress in recent years. As these devices become more complex, the reproducibility of their electrical properties across a chip becomes increasingly important. This study focuses on minimizing the variation of the critical current in Josephson junctions, which is the essential electrical parameter in a chip. By optimizing the fabrication process, the resistance variation across different chip areas is reduced, ensuring high reproducibility.
SCIENTIFIC REPORTS
(2023)
Article
Physics, Applied
Junwen Zeng, Lei Chen, Xianghai Zhong, Yue Wang, Yinping Pan, Denghui Zhang, Shujie Yu, Ling Wu, Lu Zhang, Wei Peng, Zhen Wang
Summary: This research presents a superconducting memory cell that utilizes a superconducting-magnetic pi junction. The cell exhibits flux quantum hysteresis centered around the zero-bias current. Furthermore, a fabrication process combining superconductor-ferromagnet-superconductor (SFS) junctions with superconductor-normal metal-superconductor (SNS) junctions is developed, successfully achieving the formation of the pi junction.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2022)
Article
Optics
Kanu Sinha, Saeed A. Khan, Elif Cuece, Hakan E. Tuereci
Summary: In this paper, we study the radiative properties of an artificial atom coupled to a Josephson junction array, and demonstrate the transition from a perturbative to a nonperturbative regime of light-matter interaction through the enhancement of the coupling. We show that the concept of spontaneous emission breaks down and introduce hybrid atom-resonator modes to explain this phenomenon.
Article
Computer Science, Information Systems
Denis Gerard Crete, Sarah Menouni, Juan Trastoy, Salvatore Mesoraca, Julien Kermorvant, Yves Lemaitre, Bruno Marcilhac, Christian Ulysse
Summary: This paper discusses the improved design of 2D arrays for high-Tc and low-Tc magnetic field detectors, aiming to achieve higher sensitivity. The proposed two-plate geometry for Josephson junction arrays can be integrated in the same substrate or assembled on two different substrates. The current distribution in series-connected arrays is modeled, showing that the proposed geometry greatly improves the uniformity and response of the Josephson arrays. The alignment of the arrays is not critical, and conventional techniques can be used for device fabrication.
Article
Materials Science, Multidisciplinary
Jing Yang, Etienne Jussiau, Cyril Elouard, Karyn Le Hur, Andrew N. Jordan
Summary: We investigated the influence of a weakly nonlinear Josephson bath on a small quantum system, perturbatively calculating the correlation function of the bath. A duality relation for the Josephson bath between large charging and Josephson energies regimes was established. The Josephson bath may become non-Markovian at high temperatures, with the correlation function shifting by a constant and not decaying with time.
Article
Chemistry, Multidisciplinary
Antonio Vettoliere, Roberta Satariano, Raffaella Ferraiuolo, Luigi Di Palma, Halima Giovanna Ahmad, Giovanni Ausanio, Giovanni Piero Pepe, Francesco Tafuri, Davide Massarotti, Domenico Montemurro, Carmine Granata, Loredana Parlato
Summary: This paper reports the fabrication and characterization of high-quality ferromagnetic Josephson junctions based on aluminum technology. The innovative fabrication process allows the obtained hybrid aluminum Josephson junctions to have very high quality, supporting the application of ferromagnetic Josephson junctions in advanced quantum circuits.
Article
Astronomy & Astrophysics
A. Hannaford-Gunn, K. U. Can, R. Horsley, Y. Nakamura, H. Perlt, P. E. L. Rakow, G. Schierholz, H. Stueben, R. D. Young, J. M. Zanotti
Summary: In this study, the properties of generalized parton distributions (GPDs) are determined from a lattice QCD calculation of the off-forward Compton amplitude (OFCA). By extending the Feynman-Hellmann relation to second-order matrix elements at off-forward kinematics, the OFCA can be calculated from lattice propagators computed in the presence of a background field. Using an operator product expansion, the deeply virtual part of the OFCA is parametrized in terms of the low-order Mellin moments of the GPDs. Numerical investigations are conducted to determine the form factors of the lowest two moments of the nucleon GPDs at zero-skewness kinematics. This study provides novel constraints on the x- and t-dependence of GPDs and demonstrates the viability of calculating the OFCA from first principles.
Article
Physics, Multidisciplinary
S. J. Paul, S. Moran, M. Arratia, A. El Alaoui, H. Hakobyan, W. Brooks, M. J. Amaryan, W. R. Armstrong, H. Atac, L. Baashen, N. A. Baltzell, L. Barion, M. Bashkanov, M. Battaglieri, I Bedlinskiy, B. Benkel, F. Benmokhtar, A. Bianconi, L. Biondo, A. S. Biselli, M. Bondi, F. Bossu, S. Boiarinov, K-Th Brinkmann, W. J. Briscoe, D. Bulumulla, V. D. Burkert, R. Capobianco, D. S. Carman, A. Celentano, V Chesnokov, T. Chetry, G. Ciullo, P. L. Cole, M. Contalbrigo, G. Costantini, A. D'Angelo, N. Dashyan, R. De Vita, M. Defurne, A. Deur, S. Diehl, C. Dilks, C. Djalali, R. Dupre, H. Egiyan, L. El Fassi, P. Eugenio, S. Fegan, A. Filippi, G. Gavalian, Y. Ghandilyan, G. P. Gilfoyle, A. A. Golubenko, G. Gosta, R. W. Gothe, K. A. Griffioen, M. Guidal, M. Hattawy, T. B. Hayward, D. Heddle, A. Hobart, M. Holtrop, Y. Ilieva, D. G. Ireland, E. L. Isupov, H. S. Jo, R. Johnston, K. Joo, S. Joosten, D. Keller, A. Khanal, M. Khandaker, W. Kim, A. Kripko, V Kubarovsky, V Lagerquist, L. Lanza, M. Leali, S. Lee, P. Lenisa, X. Li, K. Livingston, I. J. D. MacGregor, D. Marchand, V Mascagna, B. McKinnon, Z. E. Meziani, S. Migliorati, R. G. Milner, T. Mineeva, M. Mirazita, V. Mokeev, P. Moran, C. Munoz Camacho, K. Neupane, D. Nguyen, S. Niccolai, G. Niculescu, M. Osipenko, A. Ostrovidov, P. Pandey, M. Paolone, L. L. Pappalardo, R. Paremuzyan, E. Pasyuk, W. Phelps, N. Pilleux, D. Pocanic, O. Pogorelko, M. Pokhrel, J. Poudel, J. W. Price, Y. Prok, B. A. Raue, T. Reed, M. Ripani, G. Rosner, F. Sabatie, C. Salgado, A. Schmidt, R. A. Schumacher, Y. G. Sharabian, E. Shirokov, U. Shrestha, P. Simmerling, D. Sokhan, N. Sparveris, S. Stepanyan, I. I. Strakovsky, S. Strauch, J. A. Tan, R. Tyson, M. Ungaro, S. Vallarino, L. Venturelli, H. Voskanyan, E. Voutier, X. Wei, R. Wishart, M. H. Wood, N. Zachariou, Z. W. Zhao, V Ziegler, M. Zurek
Summary: We present the first measurement of dihadron angular correlations in electron-nucleus scattering. The results show a strong suppression effect for azimuthally opposite pairs, no suppression effect for nearby pairs, and an enhancement effect for pairs with large invariant mass. These findings indicate that angular correlation studies are important for understanding the formation and interaction of hadrons inside nuclei.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Multidisciplinary
R. Kuzmin, N. Grabon, N. Mehta, A. Burshtein, M. Goldstein, M. Houzet, L. Glazman, V. E. Manucharyan
Summary: The study shows that a quantum phase-slip fluctuation in high-impedance super-conducting waveguides can split a single microwave photon into multiple lower-energy photons with near unit probability, a phenomenon lacking analogs in nonlinear optics. The results connect circuit quantum electrodynamics to critical phenomena in two-dimensional boundary quantum field theories.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Applied
Udit Khanna, Moshe Goldstein, Yuval Gefen
Summary: This paper reviews recent works on fractional chiral modes caused by edge reconstruction in integer and fractional quantum Hall phases. The study shows that the interplay between electronic repulsion and the boundary confining potential can drive quantum phase transitions, leading to the emergence of additional counter-propagating modes. By using variational methods, the analysis reveals that disorder-induced tunnelling and intermode interactions can result in the presence of upstream neutral modes. These findings have important implications for explaining experimental observations and the absence of anyonic interference phenomena.
LOW TEMPERATURE PHYSICS
(2022)
Article
Physics, Multidisciplinary
Sourav Biswas, Rajarshi Bhattacharyya, Hemanta Kumar Kundu, Ankur Das, Moty Heiblum, Vladimir Umansky, Moshe Goldstein, Yuval Gefen
Summary: The fractional charge of quasiparticles is a fundamental feature of quantum Hall effect states. At sufficiently low temperatures, the Fano factor is found to be equal to the bulk filling factor, and this noise pattern is also observed on intermediate conductance plateaux.
Article
Physics, Multidisciplinary
Udit Khanna, Moshe Goldstein, Yuval Gefen
Summary: In this study, it is found that in certain situations, edge reconstruction can lead to the emergence of paired counterpropagating modes and may give rise to non-topological upstream neutral modes. This finding may explain the experimental observation of ubiquitous neutral modes and the suppression of anyonic interference in interferometry experiments.
PHYSICAL REVIEW LETTERS
(2022)
Article
Quantum Science & Technology
Noa Feldman, Moshe Goldstein
Summary: Childs' universal quantum-walk-based quantum computation model has paved the way for a new approach to studying the limitations and advantages of quantum computation. This work extends the quantum walk model to noisy systems, providing a tool for the study of NISQ computers that is efficient, does not require ancillas, and allows direct access to the entanglement properties of the system.
QUANTUM SCIENCE AND TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Swarup Deb, Wei Cao, Noam Raab, Kenji Watanabe, Takashi Taniguchi, Moshe Goldstein, Leeor Kronik, Michael Urbakh, Oded Hod, Moshe Ben Shalom
Summary: Ferroelectricity in atomically thin bilayer structures has been predicted and measured in hexagonal non-centrosymmetric two-dimensional materials. The study explores the potential of multi-layered van der Waals stacks in designing multi-state 'ladder-ferroelectrics' and reveals that the internal polarization remains notable even under high-density doping of mobile charge carriers.
Article
Physics, Multidisciplinary
Matan Lotem, Eran Sela, Moshe Goldstein
Summary: This study provides the first numerical evidence that Non-Abelian anyons can emerge as independent entities in gapless electronic models. By introducing a novel mapping method, the spectral degeneracy structure and fractional entropy of the system are extracted, and the F matrices, which encode the topological information regarding braiding of anyons, are calculated directly from impurity spin-spin correlations.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
P. A. Nosov, D. S. Shapiro, M. Goldstein, I. S. Burmistrov
Summary: Using dissipation to control the creation of nontrivial quantum many-body correlated states is both fundamentally important and practically useful. In this study, we investigated the effect of number conservation in a paradigmatic two-band system with dissipative dynamics. We found that the system exhibits diffusive behavior for particle and hole density modes at intermediate length- and timescales, which can only be excited nonlinearly. We also identified processes that limit this diffusive behavior at the longest length- and timescales, leading to a reaction-diffusion dynamics described by the Fisher-Kolmogorov-Petrovsky-Piskunov equation, causing the designed dark state to become unstable.
Article
Materials Science, Multidisciplinary
Matan Lotem, Eran Sela, Moshe Goldstein
Summary: In this study, the researchers extend the Wilson's numerical renormalization group (NRG) method to investigate the system of two Kondo impurities coupled at different locations through unidirectional channels. The results show that, despite the restriction of the mediated interimpurity interactions by the unidirectional channels, the local properties and thermodynamic quantities remain unaffected.
Article
Materials Science, Multidisciplinary
Orr Rapoport, Moshe Goldstein
Summary: In this work, the authors study the behavior of topological systems with non-Hermitian boundary conditions. They find that the emergence of edge modes is modified compared to the Hermitian case, and propose a modified contour in the wave-vector plane to correctly count the edge modes. The topological structure remains the same as in the Hermitian case.
Article
Optics
Ido Kaplan, Muhammad Erew, Yonatan Piasetzky, Moshe Goldstein, Yaron Oz, Haim Suchowski
Summary: This article introduces an error-mitigation scheme for robust single-qubit unitary gates based on a composite segmented design that takes into account the full distribution of physical noise and errors in the system. The authors provide two optimization approaches and demonstrate the effectiveness of the scheme in the field of photonics.
Article
Quantum Science & Technology
Noa Feldman, Augustine Kshetrimayum, Jens Eisert, Moshe Goldstein
Summary: We introduce a method for extracting meaningful entanglement measures of tensor network states in general dimensions. The method involves stochastic sampling of matrix elements to calculate their moments, providing Renyi entropies and negativities. The method is tested on the one-dimensional critical XX chain and the two-dimensional toric code, showing satisfactory results.
Article
Materials Science, Multidisciplinary
Udit Khanna, Moshe Goldstein, Yuval Gefen
Summary: This article introduces the existence of Parafermionic zero modes in multilegged star junctions of quantum Hall states and proposes protocols using quantum antidots and fractional edge modes to detect and manipulate their quantum states.
Article
Materials Science, Multidisciplinary
Jukka Vayrynen, Moshe Goldstein, Yuval Gefen
Summary: The edges of quantum Hall phases exhibit a variety of exotic modes, including neutralons, which are chargeless anyons with semion statistics. These neutral particles can be experimentally accessed, making their study and manipulation intriguing and challenging. This article focuses on the strongly interacting regime of neutralons, where a quarteting mechanism replaces conventional pairing and leads to neutralon superconductivity. The manifestations of this effect are discussed, along with the potential for observing interference of the accompanying charged anyons.
Article
Optics
Muhammad Erew, Moshe Goldstein, Haim Suchowski
Summary: Maximally entangled states are crucial in quantum information processing, and this study introduces a control scheme that efficiently manipulates complete population inversion between two such states. By exploiting the self-duality of SU(2) and using couplings related to Pythagorean triples, the research presents a method that achieves complete population inversion with minimal couplings and generators in 2(2N)-level systems.
