163 citations · 1.1k across the 24 of their papers we have counts for
24 papers
Magnetic exchange coupled nonreciprocal devices for cryogenic memory
Josep Ingla-Aynés, Lina Johnsen Kamra, Franklin Dai +5
As computing power demands continue to grow, superconducting electronics present an opportunity to reduce power consumption by increasing the energy efficiency of digital logic and…
Highly Efficient Superconducting Diodes and Rectifiers for Quantum Circuitry
Josep Ingla-Aynés, Yasen Hou, Sarah Wang +4
Superconducting electronics is essential for energy-efficient quantum and classical high-end computing applications. Towards this goal, non-reciprocal superconducting circuit eleme…
Electrically-controlled hybrid superconductor-ferromagnet cell for high density cryogenic memory
Ivan Nevirkovets, Oleg Mukhanov
We report the fabrication and testing, at 4.2 K, of an SISFS device, where S, F, and I denote a superconductor (Nb), a ferromagnetic material (permalloy), and an insulator (AlOx),…
Discriminating the Phase of a Coherent Tone with a Flux-Switchable Superconducting Circuit
Luigi Di Palma, Alessandro Miano, Pasquale Mastrovito +5
We propose a new phase detection technique based on a flux-switchable superconducting circuit, the Josephson digital phase detector (JDPD), which is capable of discriminating betwe…
High Density Fabrication Process for Single Flux Quantum Circuits
D. Yohannes, M. Renzullo, J. Vivalda +6
We implemented, optimized and fully tested over multiple runs a superconducting Josephson junction fabrication process tailored for the integrated digital circuits that are used fo…
Characterizing Niobium Nitride Superconducting Microwave Coplanar Waveguide Resonator Array for Circuit Quantum Electrodynamics in Extreme Conditions
Paniz Foshat, Paul Baity, Sergey Danilin +9
The high critical magnetic field and relatively high critical temperature of niobium nitride (NbN) make it a promising material candidate for applications in superconducting quantu…
Fluxonium Qubits in a Flip-Chip Package
Aaron Somoroff, Patrick Truitt, Adam Weis +10
The strong anharmonicity and high coherence times inherent to fluxonium superconducting circuits are beneficial for quantum information processing. In addition to requiring high-qu…
Modeling the computer memory based on the ferromagnet/superconductor multilayers
Serhii E. Shafraniuk, Ivan P. Nevirkovets, Oleg A. Mukhanov
A model of superconducting computer memory exploiting the orthogonal spin transfer (OST) in the pseudospin valve (PS) that is controlled by the three-terminal Josephson superconduc…
Cryogenic Memory Architecture Integrating Spin Hall Effect based Magnetic Memory and Superconductive Cryotron Devices
Minh-Hai Nguyen, Guilhem J. Ribeill, Martin Gustafsson +19
One of the most challenging obstacles to realizing exascale computing is minimizing the energy consumption of L2 cache, main memory, and interconnects to that memory. For promising…
ERSFQ 8-bit Parallel Arithmetic Logic Unit
A. F. Kirichenko, I. V. Vernik, M. Y. Kamkar +4
We have designed and tested a parallel 8-bit ERSFQ arithmetic logic unit (ALU). The ALU design employs wave-pipelined instruction execution and features modular bit-slice architect…
Symmetric Traveling Wave Parametric Amplifier
Alessandro Miano, Oleg A. Mukhanov
We developed and experimentally tested a Symmetric Traveling Wave Parametric Amplifier (STWPA) based on Three-Wave Mixing, using the new concept of a Symmetric rf- SQUID. This allo…
Properties of ferromagnetic Josephson junctions for memory applications
Roberta Caruso, Davide Massarotti, Alessandro Miano +9
In this work we give a characterization of the RF effect of memory switching on Nb-Al/AlOx-(Nb)-PdFe-Nb Josephson junctions as a function of magnetic field pulse…
RF assisted switching in magnetic Josephson junctions
Roberta Caruso, Davide Massarotti, Vitaly Bol'ginov +8
We test the effect of an external RF field on the switching processes of magnetic Josephson junctions (MJJs) suitable for the realization of fast, scalable cryogenic memories compa…
Quantum--Classical Interface Based on Single Flux Quantum Digital Logic
R. McDermott, M. G. Vavilov, B. L. T. Plourde +4
We describe an approach to the integrated control and measurement of a large-scale superconducting multiqubit circuit using a proximal coprocessor based on the Single Flux Quantum…
Coherent Oscillations of Driven rf SQUID Metamaterials
Melissa Trepanier, Daimeng Zhang, Oleg Mukhanov +7
Through experiments and numerical simulations we explore the behavior of rf SQUID (radio frequency superconducting quantum interference device) metamaterials, which show extreme tu…
Tunable Broadband Transparency of Macroscopic Quantum Superconducting Metamaterials
Daimeng Zhang, Melissa Trepanier, Oleg Mukhanov +1
Narrow-band invisibility in an otherwise opaque medium has been achieved by electromagnetically induced transparency (EIT) in atomic systems. The quantum EIT behaviour can be class…
Electrical Characteristics of Superconducting-Ferromagnetic Transistors
Ivan P. Nevirkovets, Oleksandr Chernyashevskyy, Georgy V. Prokopenko +2
We report experimental results on characteristics of SFIFS junctions and multi-terminal SFIFSIS devices (where S, I, and F denote a superconductor (Nb), an insulator (AlOx), and a…
Realization and modeling of rf superconducting quantum interference device metamaterials
M. Trepanier, Daimeng Zhang, Oleg Mukhanov +1
We have prepared meta-atoms based on radio frequency superconducting quantum interference devices (RF SQUIDs) and examined their tunability with dc magnetic field, rf current, and…
Development of 2D Bi-SQUID Arrays with High Linearity
S. Berggren, G. Prokopenko, P. Longhini +11
We develop a two-dimensional (2D) Superconducting Quantum Interference Filter (SQIF) array based on recently introduced high-linearity tri-junction bi-SQUIDs. Our bi-SQUID SQIF arr…
DC and RF Measurements of Serial Bi-SQUID Arrays
G. V. Prokopenko, O. A. Mukhanov, A. Leese de Escobar +7
SQUID arrays are promising candidates for low profile antennas and low noise amplifier applications. We present the integrated circuit designs and results of DC and RF measurements…
Magnetic Josephson Junctions with Superconducting Interlayer for Cryogenic Memory
Igor V. Vernik, Vitaly V. Bol'ginov, Sergey V. Bakurskiy +4
We investigate Magnetic Josephson Junction (MJJ) - a superconducting device with ferromagnetic barrier for a scalable high-density cryogenic memory compatible with energy-efficient…
Active Electrically Small Antenna Based on Superconducting Quantum Array
Victor K. Kornev, Igor I. Soloviev, Alexey V. Sharafiev +2
We introduce Superconductive Quantum Arrays (SQAs) and propose to use these structures as active Electrically Small Antennas (ESA). Several prototypes of the active ESA were fabric…
Implementation of Energy Efficient Single Flux Quantum (eSFQ) Digital Circuits with sub-aJ/bit Operation
Mark Hans Volkmann, Anubhav Sahu, Coenrad Johan Fourie +1
We report the first experimental demonstration of recently proposed energy-efficient single flux quantum logic, eSFQ. This logic can represent the next generation of RSFQ logic eli…
Ferromagnetic Josephson switching device with high characteristic voltage
T. I. Larkin, V. V. Bol'ginov, V. S. Stolyarov +4
We develop a fast Magnetic Josephson Junction (MJJ) - a superconducting ferromagnetic device for a scalable high-density cryogenic memory compatible in speed and fabrication with e…