FSNews365 The Next Generation of News

Chinese Physicists Quantify Exponential Chaos Amplification in Quantum Many-Body System Time Reversal and the Quantum Butterfly Effect In a groundbreaking advancement in quantum physics , a team of physicists in China has achieved the first precise quantification of chaos amplification within a quantum many-body system as it evolves. Integrating theoretical insight with controlled experiments, Yu-Chen Li and his group at the University of Science and Technology of China showed that reversing time tin these systems leads to exponential growth in chaos consistent with expectations regarding their heightened error sensitivity. The research has been featured in Physical Review Letters . The Butterfly Effect in Quantum Physics The butterfly effect stands as a powerful metaphor within chaos theory, capturing how delicate complex systems can be. A handful of minor inaccuracies in defining the starting point can cause the system's later behaviour to stray far from calculated predictions...

Quantum Chaos Simulation on 91-Qubit Processor Using Error Mitigation Breakthrough Large-Scale Quantum Chaos Finally Within Reach of Near-Term Quantum Computers The study of quantum chaos aims to translate chaotic classical dynamics into quantum terms, but practical simulations have been held back by limited computing power. Using advanced error mitigation and custom-designed circuits on a 91-qubit superconducting quantum processor , researchers have demonstrated a promising new approach. The work is reported in Nature Physics . Error Mitigation Instead of Error Correction Reliable quantum simulations demand the suppression of errors, yet full-scale quantum error correction comes at the cost of significant qubit and control overheads . Until now, researchers have largely sidestepped this challenge by focusing on smaller quantum many-body systems or on integrable models that exhibit limited chaos. In the new study, the team adopted a different strategy. Rather than eliminating noi...

Physics Experiment Reveals Order in Quantum Chaos Breakthrough Discovery in Quantum Research UC Santa Cruz physicist Jairo Velasco, Jr., and a global team of researchers have confirmed the existence of order within chaos in the quantum domain. Their findings,  published in Nature  on November 27, verify a 40-year-old theory that electrons confined to quantum s pace adhere to  predictable trajectories rather than dis playing chaotic behavior. The Nature of Electrons: Particle and Wave Characteristics Electrons demonstrate both  particle and wave-like characteristics, defying sim ple behavior such as rolling like a ball. Their counterintuitive nature becomes evident as their wave  pro perties, under s pecific conditions, interact to form concentrated movement  patterns. Physicists refer to these shared trajectories as " unique closed orbits ." The Role of Gra phene in Quantum Ex periments In Velasco's lab, achieving this breakthrough necessitated an elaborat...