All articles tagged with #quantum algorithms
Google claims to have achieved quantum advantage with a new algorithm called quantum echoes, which can potentially solve scientific problems like molecular structure determination. However, researchers remain skeptical about the immediacy and practicality of these claims, noting that the technology is still in early stages and applicable only to simple molecules so far.
A recent study reveals that the speed limit of quantum computers is dictated by the complexity of entanglement required to solve problems, linking problem difficulty to physical entanglement structures, and providing a new framework for optimizing quantum algorithms.
Physicists have long sought a problem that only quantum computers can solve, and now a team led by John Preskill may have found one. By studying the energy of certain quantum systems, they discovered a specific question that is easy for a quantum machine to answer but difficult for a classical one, providing a potential quantum advantage. This problem relates to determining a system's local minimum energy state, which has implications for chemistry and material sciences. While the result is still theoretical and requires testing on an actual quantum computer, it represents a promising step forward in the field of quantum algorithms.
Researchers at Cornell University have unexpectedly discovered a quantum state called a "quantum spin-glass" while studying quantum algorithms and error correction in quantum computing. This state exhibits both disorder and rigidity, similar to the properties of window glass. The researchers found that certain random sequences of incompatible measurements lead to the formation of this quantum spin-glass, which has implications for the protection of information in quantum algorithms. The discovery could contribute to the development of new strategies for error correction and a better understanding of quantum states.