superconductivity

Sebastian Hassinger, host of The New Quantum Era podcast, argues that neutral-atom platforms currently hold the lead among quantum computing qubit technologies. He points to the approach's combination of scalability, long coherence times and flexible connectivity as reasons it is outpacing rival architectures such as superconducting and trapped-ion systems, at least for now.

Researchers report a superconductor that behaves differently when time is reversed, a signature of broken time-reversal symmetry. The finding, highlighted by science outlets, could point to unusual electronic states and exotic physics in superconducting materials, drawing interest from physicists studying chiral or topological superconductivity and their potential uses in quantum technologies.

A study published in Nature reports that quantum geometry can enhance superconductivity, with a superpotential mechanism boosting the superconducting state and giving it unusually robust stiffness. The finding suggests geometric properties of quantum wavefunctions, beyond conventional energy considerations, could be used to design superconductors that stay stable under stronger perturbations. Physicists say the work points to new routes for engineering more durable superconducting materials.

Physicists report finding Cooper pairs surviving above the critical temperature at which a material normally becomes superconducting. The pairs appear within pair density waves, a modulated electronic state, and the discovery is likened to the Cheshire Cat's grin: superconductivity's signature lingering without the superconducting phase itself. The finding challenges assumptions about how the superconducting transition works and may reshape understanding of high-temperature superconductors.

New research reported by SciTechDaily suggests that superconductivity's limits can be revealed on timescales of just a few picoseconds, exposing the hidden point at which the phenomenon breaks down. The finding could refine understanding of how and when superconducting states collapse under extreme conditions.

Physicists report the first known superconductor that breaks time symmetry, a discovery described as a first of its kind. In such a state, the material's behaviour changes under time reversal, something ordinary superconductors do not do. If confirmed, the finding would open a new class of superconducting materials and interest researchers studying exotic quantum phases.

Researchers report that Cooper pairs in uranium ditelluride survive above the material's superconducting critical temperature, a phenomenon described as 'ghostly' because the pairs no longer produce zero electrical resistance. The finding offers new clues about unconventional superconductivity in this heavy-fermion compound and could reshape understanding of how superconducting states form and break down.

Physicists report detecting Cooper pairs surviving above the superconducting critical temperature within pair density waves, a surprising result since pairs normally break apart once a material loses superconductivity. The observation could reshape understanding of how superconductivity emerges and how high-temperature superconductors work, and it is drawing attention from researchers studying quantum materials.

Hackaday is asking whether superconducting transistors could play a role in the future of quantum computing. The piece explores the idea of combining superconducting electronics with quantum hardware, a topic of interest as researchers seek faster, low-power control circuits for qubits. No specific breakthrough or named research group is cited in connection with the question.