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The quantum timeline tightens. Researchers at the California Institute of Technology estimate that a usable quantum computer could be created before 2030. Such a projection upsets established predictions and revives questions about the security of cryptographic systems, including blockchains. As technological progress accelerates, the prospect of a shift is no longer distant.
In short
- A breakthrough by scientists at the California Institute of Technology suggests that a practical quantum computer could appear before 2030.
- The new architecture significantly reduces the technical requirements, dropping from millions to just 10,000 to 20,000 qubits.
- This technological advance comes with so-called “ultra-efficient” error correction, which is reshaping the outlook for the sector.
- At the same time, recent studies show the potential of quantum computers to weaken the encryption of the Bitcoin network.
A technological breakthrough that drastically reduces requirements
While quantum computing has focused on bitcoin and messaging apps, Caltech researchers working with startup Oratomic say a working quantum computer could only require 10,000 to 20,000 qubits, compared to the millions previously estimated.
This breakthrough refers to a new approach to error correction. As John Preskill explains: “We are developing new architectures for neutral-atom quantum processors that significantly reduce the resources required for fault-tolerant quantum computing”. adds: “This progress fills me with optimism that truly useful quantum computing will soon become a reality”.
This progress remains with several key innovations:
- Use of neutral atom systems to improve computational stability;
- Manipulation of qubits using lasers, so-called “optical tweezers” ;
- The ability to connect qubits over long distances;
- Drastic reduction of required resources due to new architecture.
Manuel Endres, a Caltech physics professor who recently created the largest qubit network ever assembled, notes: “Unlike other quantum computing platforms, neutral-atom qubits can be directly connected over long distances”.
It also highlights the device’s unexpected efficiency: “The level of efficiency is even surprising. This is what we call ultra-efficient error correction”. In practice, this method would allow a logical qubit to be assembled with about five physical qubits, compared to nearly a thousand with classical approaches.
Increased pressure on the security of Bitcoin and other cryptocurrencies
This breakthrough comes in the already tense context of cryptography. A recent Google article mentions the possibility of a quantum computer breaking the Bitcoin network encryption in just nine minutes, with resources well below past estimates. At the same time, the company encourages developers to adopt post-quantum cryptography (PQC) solutions now, without waiting for the threat to become concrete.
Google also set a clear horizon by announcing that it aims to transition to these standards by 2029, estimating that the quantum frontier may be closer than expected. This convergence between academic progress and industry projections reinforces the idea that the adaptation window for blockchains, especially Bitcoin, could be shorter than expected.
As technological barriers fall, the question is no longer just if quantum will pose a threat, but when. Between scientific optimism and strategic caution, the cryptoecosystem faces an imperative: to anticipate a profound mutation of its cryptographic foundations before theory becomes reality.
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A graduate of Sciences Po Toulouse and holder of the blockchain consultant certification issued by Alyra, I joined the Cointribune adventure in 2019. Convinced of the potential of blockchain to transform many sectors of the economy, I committed myself to raising awareness and informing the general public about this ever-evolving ecosystem. My goal is to enable everyone to better understand blockchain and take advantage of the opportunities it offers. I strive every day to provide an objective analysis of current events, decipher market trends, convey the latest technological innovations, and put into perspective the economic and social issues of this ongoing revolution.
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The views, thoughts and opinions expressed in this article are solely those of the author and should not be construed as investment advice. Before making any investment decision, do your own research.
