US Intel Corporation said on the 18th that the low temperature quantum control chip "Horse Ridge" jointly developed by the company and the Netherlands Research Center for Quantum Technology has the potential to control up to 128 qubits at the same time, which is an important milestone in the development of commercial quantum computers .
Intel said in a statement on the same day that it had published a paper on the technical details of the "Maring" chip at the 2020 International Solid-State Circuits Conference in San Francisco, which has demonstrated the scalability, fidelity and There are important advances in all three areas of flexibility.
In terms of scalability, the "Maring" chip uses Intel's 22-nanometer "fin field-effect transistor" technology, which integrates 4 radio frequency channels onto a chip, each of which can control 32 qubits, so the chip has The potential controls 128 qubits simultaneously.
In terms of fidelity, for errors that may occur as the number of qubits increases, the "Maring" chip system can better control qubits at different frequencies, can automatically correct some errors, and improve fidelity.
In terms of flexibility, the "Maring" chip can control two types of qubits, superconducting qubits and spin qubits, the former usually operating in the frequency range of 6 to 7 gigahertz (GHz) and the latter 13 to 20 GHz running.
On December 9 last year, Intel released what is known as the world's first low-temperature quantum control chip "Maling", which the company believes will help build a commercially available quantum computer in the future.
In the development of quantum computers, it is generally believed that the larger the number of qubits that can be effectively controlled, the stronger the quantum computing capability. When the Google team announced the realization of "quantum hegemony" in October last year, it used a processor "Xikemo" consisting of 54 qubits. However, because one qubit could not work effectively, the processor actually used only 53 Qubits.