Until recently, quantum computers were largely seen as a theoretical concept belonging to a distant future. New research from the California Institute of Technology (Caltech), however, suggests that reality may be much closer. According to scientists, the first truly functional quantum computer could emerge before the end of this decade—potentially reshaping the world of cryptocurrencies.
Fewer qubits, faster reality
The key shift lies in how many computational units—so-called qubits—are actually needed. While earlier estimates suggested millions of qubits would be required, the new study indicates that as few as 10,000 to 20,000 could be enough.
A qubit is the fundamental unit of a quantum computer, analogous to a classical bit. Until now, both their number and stability have represented the main barriers to development.
According to researchers from Caltech and the startup Oratomic, the breakthrough comes from significantly reducing error rates, which currently limit today’s quantum systems. If these errors can be suppressed, the path to practical deployment could be much shorter than previously expected.
Read also: Quantum Computers Could Soon Break Bitcoin Within Minutes, Google Warns
A revolution in error correction
The turning point comes from a new approach to so-called error correction. Traditional methods required roughly a thousand physical qubits to create a single stable “logical” qubit. The new model dramatically improves this ratio—reducing it to as few as five.
This shift is made possible by the use of neutral atoms and optical tweezers, a technology that allows scientists to manipulate individual atoms using lasers.
“Unlike other platforms, neutral atoms can be directly connected even over long distances. Optical tweezers allow atoms to be moved across an array and entangled directly,” explains physicist Manuel Endres from Caltech.
According to theoretical physicist John Preskill, this represents “ultra-efficient error correction” that significantly lowers technological requirements.
The quantum threat to Bitcoin is getting closer
The research comes at a time when concerns about a quantum threat to cryptocurrencies are growing. Google recently published a study suggesting that a quantum computer could, in the future, break Bitcoin’s cryptography in as little as nine minutes—and with far fewer resources than previously assumed.
Google has also urged blockchain developers to begin transitioning to so-called post-quantum cryptography (PQC), which is designed to resist such attacks. The tech giant itself plans to migrate to PQC by 2029.
Read also: How Quantum Computers Could Transform Investing: A Technology That May Rewrite Market Rules
What it means for investors and everyday users
For now, quantum computing remains a future scenario rather than an immediate threat. The technology is still highly complex, and practical deployment will depend on multiple factors.
At the same time, the timeline is clearly shortening. If it turns out that a functional quantum computer could be built around 2030, cryptocurrency projects may need to adapt much faster than previously expected.
The good news is that solutions already exist. Post-quantum cryptography is actively being developed, and many projects are already testing it. The transition to new standards could therefore happen before quantum computers become a real-world threat.
Quantum future is no longer science fiction
The conclusion of the research is clear: quantum technologies are moving from theory into practice. Collaboration between Caltech and Oratomic, along with parallel efforts by major tech companies, shows that the “quantum frontier” may be closer than previously thought.
For cryptocurrencies, this means one thing—the era when fundamental security principles will need to be rewritten may arrive sooner than investors would have imagined just a few years ago.
