Even 10,000 trillion years might not suffice for a supercomputer to outperform Google’s new quantum machine – Jason Deegan
In a groundbreaking new study, Google reveals that quantum computers could perform tasks that would be impossible for traditional supercomputers, completely changing our understanding of computational power. This breakthrough highlights the enormous potential of quantum technologies and demonstrates scenarios where these machines outpace even the most powerful classical supercomputers currently in operation.Google has taken a monumental step forward in the race for quantum supremacy with its Sycamore processor. The recent study shows that, under specific conditions, particularly with low levels of noise, Sycamore outperforms classical supercomputers by a huge margin. Certain simulations and computations are now practically instantaneous with quantum computers, while it would take a traditional supercomputer 10,000 trillion years to perform the same task. This achievement could accelerate progress in numerous research fields, unlocking scientific discoveries that were previously unimaginable.At the heart of this technological revolution is the Sycamore quantum processor, which uses an algorithm known as random circuit sampling (RCS) to generate sequences of complex values. The study revealed that when Sycamore operates with minimal noise, it achieves computational complexity that is beyond the capabilities of classical supercomputers. This level of performance underscores the transformative potential of quantum computing in processing information on an entirely new scale.Google researchers identified a critical noise threshold, beyond which Sycamore could be outperformed by classical machines. However, below this threshold, the computational complexity increases, leading to a stable and highly complex computational phase that is inaccessible to classical systems. This discovery emphasizes the importance of minimizing noise in order to fully leverage the potential of quantum systems.The study also highlights two key quantum phase transitions. The first is a dynamic transition based on the number of cycles, while the second is a phase transition controlled by cycle error, analyzed both theoretically and experimentally using a weak-link model. Understanding these quantum phase transitions is crucial for manipulating and maintaining quantum states for practical use.By using 67 qubits over 32 cycles, researchers demonstrated that the computational cost of their experiments far exceeds that of current supercomputers, even when accounting for inevitable noise. These results confirm the existence of stable and complex computational phases, accessible with current quantum processors. This achievement proves that quantum computers are ready to tackle computationally intensive tasks that would be impossible to simulate on classical platforms.Unlike traditional silicon chips, the Sycamore processor is designed to precisely control electrons at temperatures close to absolute zero in order to minimize temperature fluctuations that could disrupt the delicate quantum states of the electrons and introduce noise. Mastery of this extreme cold is crucial to maintaining the integrity of quantum calculations and advancing toward practical and efficient technological applications.While Google’s impressive results don’t mean that quantum computers will replace classical computers across the board, they do open the door to specific applications where quantum systems will excel, such as the precise simulation of chemical reactions—a task once deemed impossible. These results also point to the future direction of computing, where quantum and classical technologies may coexist, each optimized for particular types of tasks.In the coming years, we can expect to see quantum and classical computing work hand in hand, pushing the boundaries of what technology can achieve and redefining our understanding of computational power.Comment Save my name, email, and website in this browser for the next time I comment.
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