Microsoft announced the Majorana 2 quantum chip, which the company said is approximately 1,000 times more reliable than previous versions [1].
This development accelerates the timeline for scalable quantum computing, creating a potential security risk for the cryptographic algorithms that protect Bitcoin and other digital assets.
Microsoft said the new chip was developed using agentic AI to speed up the discovery process [2]. A key technical achievement involves qubit coherence time, which the company said now reaches 20 seconds [2]. This represents a significant jump over rival systems, where coherence is typically measured in microseconds [2].
The company is targeting 2029 as the year it will produce a scalable quantum computer [2]. Such a machine would possess the processing power necessary to perform calculations that are currently impossible for classical computers, including the ability to break standard encryption.
While the Majorana 2 chip marks a leap in stability, the transition to a fully scalable system remains a complex engineering challenge. The use of AI in the design phase has allowed Microsoft to iterate on chip architecture faster than traditional research methods allowed [2].
Security experts have long warned that quantum computing could render current public-key cryptography obsolete. Because Bitcoin relies on these mathematical hurdles to secure private keys, a scalable quantum computer could theoretically allow an attacker to derive a private key from a public address [1].
“The Majorana 2 quantum chip is about 1,000 times more reliable than previous versions.”
The shift from microsecond to second-long coherence times suggests that the 'noise' and error rates that have plagued quantum computing are being solved. If Microsoft hits its 2029 target, the financial industry and blockchain networks will face an urgent deadline to implement quantum-resistant cryptography to prevent the total compromise of encrypted data.
