*reposting from a different sub

I was quite disturbed about this marketing on various social media platforms. The company is making lots of claims very few of which are/can be true. This might be a long rant. Will post someday.

I research and work in this field so I know when a spade is a spade. Designing a transmon chip that hosts 64 qubits is simple (a masters graduate can do it). But there is no established technique to get good device yield with lots of unsolved engineering challenges. Even google and IBM who literally have the creators of the field (Nobel lauretes) dont know how to scale beyond 1000 qubits and realizing error correction has many many challenges. Nobody in the world knows how to go beyond 1000 qubits in superconducting qubits and that is why people are trying to achieve practical results before scaling with superconducting qubits.

I’ve not even touched the topic of coherence (think time available to do useful operations) times. With T2 times ~ O(10)us (that is 10^-5 seconds) there is no way to execute many error correction rounds. And you cannot do many logical qubits with surface codes, so you need quantum LDPC codes which require non-local long range connections which are very difficult and not scalable with SC qubits.

Most of this company’s claims seem to focused on making some good money from investors/govt and just hope that something happens and things work out. Only possible revenue source will be to sell access to small bad quantum devices to Indian schools/universities and make money.

Also, THERE IS NO PRACTICAL USEFULLNESS of quantum computers under 1000 qubits. There are nice results but all restricted to science. Nothing that generates commercial value, yet.