Recently, Google announced that they had reached a historical landmark where the quantum supremacy, which has been long-awaited, has been achieved. With quantum supremacy, a quantum computer can ideally have unlimited performance potential when it comes to the best computers in the world at present. The CEO of Google, Sundar Pichai, compared this amazing feat with the creation of the very first spacecraft or rocket, which had successfully reached the outer space. This excitement was, however, short-lived. This is because the claim was rapidly dismissed by IBM, which is rivaling Google in the field of technology. According to IBM, Google’s claim is not at all valid, and it is nothing but a fanfare gimmick.
The journal Nature, on Wednesday, published Google’s claim. In the paper, the creation of the superconducting quantum processor, which is named Sycamore, is given, along with the workings and findings of the quantum supremacy research team, led by John Martinis. The main power of Sycamore lies in using the weirdness that is related to quantum physics to solve any ‘unsolvable’ problem. As a demonstration, the task of using a sequence of numbers to check their randomness was given, and the quantum computer took a recorded time of 3 minutes and 20 seconds. The same task would approximately take over 10,000 years for the supercomputer of Oak Ridge National Lab in Tennessee, which happens to be the world’s most powerful supercomputer at present. Even though the work was inconceivably hard, as per the journal, the work was done, and it was only possible with the help of the quantum processor, which further states the case for its supremacy.
However, IBM researchers disagreed with many facts provided and also stated that the Oak Ridge supercomputer could be differently programmed. When programmed efficiently, the same problem can be solved within 2.5 days or even less. Their inclusion of quantum supremacy states that a quantum computer should ideally be able to solve a problem which no other classical computer can solve. To them, the claim is not at all foolproof. They did agree that the demonstration was excellent for showing the quantum computing progress based on superconducting. However, it has no conclusive proof of the supremacy that Google has claimed.