Scientists have found a solution to the problem of superconductivity in diamond, opening the way for breakthroughs in quantum and hybrid technologies.

Brief Summary

American scientists have for the first time revealed how a dielectric crystal turns into a superconducting diamond. The new information not only confirms existing hypotheses about the gemstone’s superconductivity, but also opens avenues for its application in quantum computing and hybrid electronics.

1. Study Participants
Institute Role University of Pennsylvania (Pennsylvania State University) Main Experiments Chicago University PME (University of Chicago PME) Support and Analysis Quantum Center Q‑NEXT Technology Development

2. How Superconductivity Is Achieved
1. Boron doping – boron atoms are introduced into the diamond crystal lattice (HBDD, heavily boron‑doped diamond).

2. Transition from dielectric to conductor – at room temperature the material becomes conductive.

3. Cooling – below the critical temperature it enters a superconducting state.

3. Thin‑film Monocrystal Growth Technology
- MPCVD method (microwave plasma chemical vapor deposition)

- Film thickness: from 0.5 µm to 20 µm; key sample – 0.5 µm

- Homogeneity check: spatial Raman spectroscopy, AFM and TEM

4. Superconductivity Characterization
- Graininess is not related to crystal structure defects but is due to the material’s electronic structure.

- In a “homogeneous” crystal a mosaic of superconducting “puddles” (islands) was found.

- For a full transition to the superconducting state these puddles must connect into one continuous path for electrons.

5. Control and Outlook
Factor Possible Effect Temperature Switching between states Magnetic field Regulation of superconducting islands Current Creation of local fields Light Interaction with quantum defects
- Controlling boron concentration allows forming and managing the “mosaic” of superconductivity.

- This opens the possibility to integrate both qubits and conventional electronic elements into one structure.

- Diamond could become a universal interface between different types of quantum systems and classical computers.

6. What This Means for Future Technologies
1. Multifunctional quantum chips – one diamond platform that combines qubits, sensors and logic elements.

2. Revolution in computing – new architectures where superconductivity and the unique properties of diamond defects work together.

Thus, boron‑doped diamond becomes not just a material for observing superconductivity but a potential building block for future quantum and classical computing systems.