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Princeton's Tantalum Qubits Boost Superconducting Performance, Face Supply Issues

12/16/2025

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Summary

Story summary

Princeton University researchers have developed a tantalum-based method to fabricate superconducting qubits.
The qubits achieve coherence times up to 1.68 milliseconds, about three times longer than current systems.
The study was published in Nature and highlights tantalum's resistance to contaminants and corrosion.
However, tantalum's limited supply, primarily mined in Africa, poses a challenge for widespread adoption.
Further testing is required to integrate these qubits into existing quantum computers.

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Story summary

Princeton University researchers have developed a tantalum-based method to fabricate superconducting qubits.
The qubits achieve coherence times up to 1.68 milliseconds, about three times longer than current systems.
The study was published in Nature and highlights tantalum's resistance to contaminants and corrosion.
However, tantalum's limited supply, primarily mined in Africa, poses a challenge for widespread adoption.
Further testing is required to integrate these qubits into existing quantum computers.