The Oxford Quantum Circuit (OQC) Company announced on June 5 that it intends to revolutionize the scalability of quantum computing. By 2028, OQC is expected to reach 200 qubits Logical and by 2034, the goal is more ambitious: 50.000 qubits logic With a quantum computer.
These figures are more than 10 times the conversion efficiency of the UK company, according to reports from Oxford University. qubits Physically to logical regarding the current approach.
As explained in Oxford Quantum Circuits, the goal is to use quantum computing for fraud detection Fraud detection, cybersecurity and prioritizing sectors such as finance, defense, and developing new drugs.
Authorities are thinking about quantum and bitcoin
Adam Back, co-founder of BlockStream, a company that develops Bitcoin-linked technologies, said ECDSA needs quantum systems. «300 million qubits Physicists» And with corrections to errors that are not present, we estimate that in our current rhythm this could take around 50 years.
The back refers to the amount qubits Physically, we need to approach the concept of those numbers. qubits It’s necessary to build qubit Logic (what is pointed out in the OQC report).
In an analysis of post-quantum specialist website in April 2025, the conversion of qubits Physically to logically, each has a high calculation cost qubit Logic can require hundreds or thousands qubits Physical.
For example, according to Post Quantum Data, prototypes of qubit Google Logical 49 qubits Physicists encode one qubit logic,On the other hand, in less efficient systems, this percentage reaches 1,000 qubits Physical qubit logic.
«Use the last number of 1,000 as a reference qubits Physical qubit Logic», Oxford Quantum Circuit, its technology is “10x efficient”, and about 100 may be required qubits Physical qubit It’s logical. This means that 50,000 logical qubits equal about 5 million qubits Physically (50,000 x 100), it’s far from the 300 million people we think are necessary to break the ECDSA.
In line with Back’s vision, the University of Sussex research reported by Cryptootics was 13 million is needed qubits Physical To compromise on Bitcoin encryption in one day, using an optimized percentage of OQC, the number equals about 130,000 qubits Logic (13,000,000 ÷100).
Ledger CTO Charles Guillemet has also minimized the current risks. In response to a Google report on Quantum Advances, he said, “The machines with millions of machines qubits Stabilize and correct errors to represent actual threats. “We’re not even close to that,” he emphasizes, highlighting current technical limitations.
Therefore, compared to the estimates of these experts, 50,000 qubits By 2034, it is said to be equivalent to 5 million yen. qubits Physical, They’ll still be below Of the 13 million qubits According to Sussex, the physicist needed.
Therefore, despite the advances promised by companies such as OQC, for now, the quantum threat of Bitcoin is currently: A distant challengegiving the ecosystem time to develop solutions such as algorithms that are resistant to quantum computing.
