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Bias lines routed over a ground plane naturally form microstrip lines associated with the presence of a capacitance. This can lead to unwanted resonances when coupled to Josephson junctions. This work presents an electrical model of a…

Applied Physics · Physics 2023-07-19 Ugur Yilmaz , Sasan Razmkhah , Romain Collot , Juergen Kunert , Ronny Stolz , Pascal Febvre

As the scaling of conventional CMOS-based technologies slows down, there is growing interest in alternative technologies that can improve performance or energy-efficiency. Superconducting circuits based on Josephson Junction (JJ) is an…

Hardware Architecture · Computer Science 2019-02-15 Swamit S. Tannu , Poulami Das , Michael L. Lewis , Robert Krick , Douglas M. Carmean , Moinuddin K. Qureshi

We develop a theory for the current-voltage characteristics of diffusive superconductor-normal metal-superconductor Josephson junctions with resistive interfaces and the distance between the electrodes smaller than the superconducting…

Superconductivity · Physics 2015-06-18 E. V. Bezuglyi , E. N. Bratus' , V. S. Shumeiko

A superconductor/normal metal/superconductor Josephson junction is a coherent electron system where the thermodynamic entropy depends on temperature and phase difference across the weak-link. Here, exploiting the phase-temperature…

Mesoscale and Nanoscale Physics · Physics 2019-03-04 Francesco Vischi , Matteo Carrega , Pauli Virtanen , Elia Strambini , Alessandro Braggio , Francesco Giazotto

Linear logic has provided new perspectives on proof-theory, denotational semantics and the study of programming languages. One of its main successes are proof-nets, canonical representations of proofs that lie at the intersection between…

Logic in Computer Science · Computer Science 2024-02-14 Aurore Alcolei , Luc Pellissier , Alexis Saurin

Despite over 40 years' development of optical logic computing, the studies have been still struggling to support more than four operands, since the high parallelism of light has not been fully leveraged blocked by the optical nonlinearity…

Emerging Technologies · Computer Science 2023-08-25 Wenkai Zhang , Bo Wu , Junwei Cheng , Hailong Zhou , Jianji Dong , Dongmei Huang , P. K. A. Wai , Xinliang Zhang

The combination of an ordinary s-type superconductor with three-dimensional topological insulators creates a promising platform for fault-tolerant topological quantum computing circuits based on Majorana braiding. The backbone of the…

Mesoscale and Nanoscale Physics · Physics 2024-10-28 Gerrit Behner , Abdur Rehman Jalil , Alina Rupp , Hans Lüth , Detlev Grützmacher , Thomas Schäpers

Highly transmissive ballistic junctions are demonstrated between Nb and the two-dimensional electron gas formed at an InAs/AlSb heterojunction. A reproducible fabrication protocol is presented yielding high critical supercurrent values.…

In neuroscience, population coding theory demonstrates that neural assemblies can achieve fault-tolerant information processing. Mapped to nanoelectronics, this strategy could allow for reliable computing with scaled-down, noisy, imperfect…

Emerging Technologies · Computer Science 2018-03-16 Alice Mizrahi , Tifenn Hirtzlin , Akio Fukushima , Hitoshi Kubota , Shinji Yuasa , Julie Grollier , Damien Querlioz

In this article, we introduce an algorithmic method to find the conservative energy and non-conservative power of a large class of maximally nonlinear electric circuits (including Josephson tunnel junctions, coherent quantum phase slips,…

Classical Physics · Physics 2024-12-19 M. Mariantoni

Nonlinear superconducting circuits can be used as amplifiers, transducers, and qubits. Only a handful of superconducting circuits have been analyzed or built, so many high-performing configurations likely remain undiscovered. We seek to…

Quantum Physics · Physics 2024-10-25 Eli J. Weissler , Mohit Bhat , Zhenxing Liu , Joshua Combes

Operation of a Superconducting Quantum Interference Device (SQUID) made of stacked Josephson junctions is analyzed numerically for a variety of junction parameters. Due to a magnetic coupling of junctions in the stack, such a SQUID has…

Superconductivity · Physics 2009-11-07 V. M. Krasnov

Robust and tunable topological Josephson junctions (TJJs) are highly desirable platforms for investigating the anomalous Josephson effect and topological quantum computation applications. Experimental demonstrations have been done in hybrid…

Mesoscale and Nanoscale Physics · Physics 2023-09-04 Gianmichele Blasi , Géraldine Haack , Vittorio Giovannetti , Fabio Taddei , Alessandro Braggio

We introduce a family of scalable planar fault-tolerant circuits that implement logical non-Clifford operations on a 2D color code, such as a logical $T$ gate or a logical non-Pauli measurement that prepares a magic $|T\rangle$ state. The…

Quantum Physics · Physics 2025-05-09 Andreas Bauer , Julio C. Magdalena de la Fuente

Made of a thin non-superconducting metal (N) sandwiched by two superconductors (S), SNS Josephson junctions enable novel quantum functionalities by mixing up the intrinsic electronic properties of N with the superconducting correlations…

In this work, we use supratransmission and infratransmission in the mathematical modeling of the propagation of digital signals in weakly damped, discrete Josephson-junction arrays, using energy-based detection criteria. Our results show an…

Superconductivity · Physics 2011-12-06 J. E. Macías-Díaz , A. Puri

We consider nonreciprocal supercurrent effects in Josephson junctions based on multiband superconductors with a pairing structure that can break time-reversal symmetry. We demonstrate that a nonreciprocal supercurrent can be generally…

Superconductivity · Physics 2024-11-12 Yuriy Yerin , Stefan-Ludwig Drechsler , A. A. Varlamov , Mario Cuoco , Francesco Giazotto

In the last few years, several groups have proposed and developed their own platforms demonstrating quantum-limited linear parametric amplification, with evident applications in quantum information and computation, electrical and optical…

Superconductivity · Physics 2019-08-20 Luca Fasolo , Angelo Greco , Emanuele Enrico

We report on a "source-sink" algorithm which allows one to calculate time-resolved physical quantities from a general nanoelectronic quantum system (described by an arbitrary time-dependent quadratic Hamiltonian) connected to infinite…

Superconductivity · Physics 2016-04-18 Joseph Weston , Xavier Waintal

Majorana zero modes (MZMs) in topological superconductors are promising for quantum computing, yet their unambiguous detection remains challenging. We fabricated Josephson junctions (JJs) using Cd$_3$As$_2$ Dirac semimetal nanoribbons with…

Superconductivity · Physics 2025-10-07 Rak-Hee Kim , Yeongmin Jang , Bob M. Wang , Dong Yu , Yong-Joo Doh