• Corpus ID: 247476148

# Flux Qubit Based on Hybrid Ferromagnetic-Superconducting Device

@inproceedings{Rybakov2022FluxQB,
title={Flux Qubit Based on Hybrid Ferromagnetic-Superconducting Device},
author={Filipp N. Rybakov and Egor Babaev},
year={2022}
}
• Published 16 March 2022
• Physics
One of the promising strategy to realize a quantum bit is based on creation of a superposition of circulating currents in a superconducting device [1, 2, 3, 4, 5, 6]. Such qubit realization, termed “flux qubit” is realized by creating a superconducting loop subject to external magnetic field (Fig. 1a). When the loop encloses (nearly) half of the superconducting flux quantum, Φ ≈ 12Φ0, there is an energy near degeneracy of clock-wise (CW) and counter-clockwise (CCW) circulation of…
1 Citations

## Figures from this paper

• Physics
• 2022
We present SuperConga, an open-source framework for simulating equilibrium properties of unconventional and ballistic singlet superconductors, confined to two-dimensional (2D) mesoscopic grains in a

## References

SHOWING 1-10 OF 17 REFERENCES

• Physics
• 1999
We present the design of a superconducting qubit that has circulating currents of opposite sign as its two states. The circuit consists of three nanoscale aluminum Josephson junctions connected in a
• Physics
• 2021
Increasing the degree of control over physical qubits is a crucial component of quantum computing research. We report a superconducting qubit of fluxonium type with the Ramsey coherence time reaching
• Physics
Nature Communications
• 2016
The design and fabrication of the superconducting flux qubit is revisited, achieving a planar device with broad-frequency tunability, strong anharmonicity, high reproducibility and relaxation times in excess of 40 μs at its flux-insensitive point.
• Physics
• 2020
The \textit{heavy-fluxonium} circuit is a promising building block for superconducting quantum processors due to its long relaxation and dephasing time at the half-flux frustration point. However,
• Physics
Science
• 1999
A qubit was designed that can be fabricated with conventional electron beam lithography and is suited for integration into a large quantum computer, allowing controlled transfer between qubits of the flux that is generated by the persistent currents, leading to entanglement of qubit information.
• Physics
Nature Physics
• 2015
One minute parity lifetimes are reported in a superconducting transistor made of niobium titanite nitride coupled to aluminium contacts even in the presence of small magnetic fields, enabling the
• Physics
Science
• 2003
The observed coherent time evolution between two quantum states of a superconducting flux qubit comprising three Josephson junctions in a loop is promising for future solid-state quantum computing.
• Physics
• 2020
We demonstrate a controlled-Z gate between capacitively coupled fluxonium qubits with transition frequencies $72.3~\textrm{MHz}$ and $136.3~\textrm{MHz}$. The gate is activated by a
• Physics
Physical review letters
• 2004
The response of a mesoscopic superconducting disk to perpendicular magnetic fields is studied by using the multiple-small-tunnel-junction method, in which transport properties of several small tunnel
• Materials Science
IEEE Transactions on Magnetics
• 2013
The magnetostatic exchange length is an important parameter in magnetics as it measures the relative strength of exchange and self-magnetostatic energies. Its use can be found in areas of magnetics