Holographic reconstruction of magnetic field distribution in a Josephson junction from diffraction-like Ic(H) patterns

@inproceedings{Hovhannisyan2022HolographicRO,
  title={Holographic reconstruction of magnetic field distribution in a Josephson junction from diffraction-like Ic(H) patterns},
  author={Razmik A. Hovhannisyan and Taras Golod and Vladimir M. Krasnov},
  year={2022}
}
A general problem of magnetic sensors is a trade-off between spatial resolution and magnetic field sensitivity. With decreasing sensor size its resolution is improved but the sensitivity is deteriorated. Obviation of such the trade-off requires development of super-resolution imaging technique, not limited by the sensor size. Here we present a proof of concept for a super-resolution method of magnetic imaging by a Josephson junction. It is based on a solution of an inverse problem… 

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References

SHOWING 1-10 OF 40 REFERENCES

Scanning SQUID susceptometers with sub-micron spatial resolution.

Scanning SQUID susceptometers that achieve sub-micron spatial resolution while retaining a white noise floor flux sensitivity of ≈2μΦ0/Hz1/2 and have integrated modulation coils for flux feedback, integrated field coils for susceptibility measurements, and batch processing are described.

Josephson junctions in a local inhomogeneous magnetic field

A Josephson junction can be subjected to a local, strongly inhomogeneous magnetic field in various experimental situations. Here this problem is analyzed analytically and numerically. A modified

Design of a scanning Josephson junction microscope for submicron-resolution magnetic imaging

We describe a magnetic field scanning instrument designed to extend the spatial resolution of scanning superconducting quantum interference device microscopy into the submicron regime. This

Practical algorithms for simulation and reconstruction of digital in-line holograms.

The algorithms described here are applicable to holographic imaging of an object exhibiting absorption as well as phase-shifting properties and it is shown that the numerical procedures for the reconstruction of holograms recorded with plane and spherical waves are identical under certain conditions.

Gradiometric micro-SQUID susceptometer for scanning measurements of mesoscopic samples.

These micro-SQUID susceptometers are fabricated and characterized for use in low-temperature scanning probe microscopy systems and feature shielding and symmetry that minimizes coupling of magnetic fields into the leads and body of the SQUID.

Quantitative magnetic force microscopy on perpendicularly magnetized samples

We present a transfer-function approach to calculate the force on a magnetic force microscope tip and the stray field due to a perpendicularly magnetized medium having an arbitrary magnetization

Quantum holographic encoding in a two-dimensional electron gas.

It is shown that it is possible to exceed this limit with a holographic method that is based on electron wavefunctions rather than free-space optical waves, and involves placing tens of bits of information into a single fermionic state.

A scanning superconducting quantum interference device with single electron spin sensitivity.

It is shown that nanoscale SQUIDs with diameters as small as 46 nm can be fabricated on the apex of a sharp tip, and they can operate over a wide range of magnetic fields, providing a sensitivity of 0.6 μB Hz(-1/2) at 1 T.

Scanning Nanospin Ensemble Microscope for Nanoscale Magnetic and Thermal Imaging.

A scanning quantum probe microscope which solves both issues by employing a nanospin ensemble hosted in a nanodiamond and provides up to an order of magnitude gain in acquisition time while preserving sub-100 nm spatial resolution both for the quantum sensor and topographic images.