Oxford quantum computing lecturer Stefano Gogioso said progress on quantum memory devices could become a defining milestone for the sector and shape Bitcoin’s long-term fate. In his view, the same class of hardware may determine whether Bitcoin is eventually broken by quantum computers or overtaken by new forms such as quantum money.
Gogioso said a viable quantum memory device would need to keep quantum states stable for months, remain portable, and support capacity on the scale of billions of independent states. Current laboratory systems, he said, can preserve quantum states only for seconds. He argued that a fault-tolerant quantum computer must maintain quantum states over long periods, which effectively makes it a quantum memory device in practice.
He added that if such hardware is achieved, it could be used both to attack Bitcoin signatures and to support applications such as quantum money. According to his remarks, attacking Bitcoin signatures would require about 500,000 physical qubits. The comments were cited by BeInCrypto and summarized by Techub.
Oxford quantum computing lecturer Stefano Gogioso said recent progress in quantum memory devices could mark a key milestone for quantum technology and determine whether Bitcoin is broken by quantum computers or displaced by alternatives such as quantum money.
Quantum memory seen as the critical threshold
Gogioso said a usable quantum memory system would need to preserve quantum states for months, remain portable, and handle billions of independent states. By contrast, current laboratory systems can keep quantum states intact for only seconds.
He said a fault-tolerant quantum computer must maintain quantum states over long periods, which means it is, in essence, a quantum memory device.
Implications for Bitcoin and quantum money
According to Gogioso, once quantum memory devices become viable, the technology could be used to attack Bitcoin signatures and also support new applications such as quantum money. He said attacking Bitcoin signatures would require about 500,000 physical qubits.
He added that investment chasing fault-tolerant quantum computing would advance both of those possible outcomes at the same time. The remarks were cited by BeInCrypto.
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