This is simply not true. What China achieved here was a one off experiment. The photonic circuit is not programmable and can’t be used to solve real world problems.
Googles Sycamore quantum computer has already achieved quantum advantage and is programmable:
Now, however, Google’s quantum computer has achieved something that could have real-world applications: successfully simulating a simple chemical reaction. The feat points the way toward quantum chemistry, which could expand scientists’ understanding of molecular reactions and lead to useful discoveries, such as better batteries, new ways to make fertilizer and improved methods of removing carbon dioxide from the air.
Last year’s quantum superiority experiment was run on
a chip dubbed Sycamore, which contained 53 superconducting quantum bits, or qubits. Chilled to near absolute zero, the qubits take on quantum-mechanical properties, allowing scientists to manipulate them in more complicated and useful ways than the simple “on/off” flows of current that make up the bits of classical computers. The hope is that one day, quantum computers will become powerful enough to quickly perform calculations that would take the lifetime of the universe for a classical computer to complete.
This
quantum-chemistry experiment, which was described in the August 28 issue of the journal
Science, relied on the same basic Sycamore design, though it only used 12 qubits. But it demonstrates the system’s versatility, says Ryan Babbush, the researcher in charge of developing algorithms for the Google project.
“It shows that, in fact, this device is a completely programmable digital quantum computer that can be used for really any task you might attempt,” he says.
https://www.scientificamerican.com/article/googles-quantum-computer-achieves-chemistry-milestone/
You use computers to solve real world problems, not to run a race.
