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Related Experiment Video

Updated: Nov 2, 2025

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

Published on: August 2, 2019

Reconfigurable Josephson Phase Shifter.

Taras Golod¹, Razmik A Hovhannisyan^1,2, Olena M Kapran¹

¹Department of Physics, Stockholm University, AlbaNova University Center, SE-10691 Stockholm, Sweden.

|June 11, 2021

Summary

Researchers developed a reconfigurable Josephson phase shifter using superconducting vortices. This quantum electronics device offers broad tunability and a wide range of quantized states for improved operation.

Keywords:

Abrikosov vortices Josephson junctions cryo-electronics superconductivity

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Area of Science:

Quantum electronics
Superconducting devices

Background:

Phase shifters are crucial for quantum electronics.
Existing devices require reconfigurability, persistence, and non-dissipation to avoid decoherence.
Josephson phase shifts are key to advanced quantum functionalities.

Purpose of the Study:

To demonstrate a novel reconfigurable phase shifter.
To utilize coreless superconducting vortices for Josephson phase shifting.
To achieve broad-range tunability and multiple quantized states.

Main Methods:

Fabrication of micron-size vortex traps.
Nanoscale manipulation of coreless superconducting vortices.
Integration of vortex traps into a phase shifter prototype.

Main Results:

Demonstrated Josephson phase shift generation using superconducting vortices.
Achieved broad-range tunability via nanoscale vortex manipulation.
Showcased reconfiguration between numerous quantized states within a [-3π, +3π] range.

Conclusions:

Coreless superconducting vortices enable highly tunable and reconfigurable phase shifters.
The demonstrated device overcomes limitations of traditional phase shifters.
This technology advances quantum electronics by providing persistent, non-dissipative components.