46+ min ago   (249+ words) This work centres on conditional mutual information, or CMI, a measure quantifying correlations between spatially separated regions independent of their surroundings. The central focus of this study is conditional mutual information, defined as I(A: C|B) = S(AB) + S(BC) "S…...

59+ min ago   (401+ words) This research addresses a fundamental challenge in network communication: efficiently waking up all nodes in a network after an adversary activates only a subset. A 72-qubit superconducting processor serves as the foundation for investigating the distributed wake-up problem with advice,…...

1+ hour, 14+ min ago   (700+ words) Researchers found that applying error mitigation to a complete quantum calculation before dividing it across multiple processors significantly improves performance and, surprisingly, can become more effective as the number of processors increases despite added communication noise. https://quantumzeitgeist.com/wp-content/uploads/Image_fx-13-33.jpg Errors represent a…...

1+ hour, 18+ min ago   (1110+ words) Dynamical decoupling has been widely utilized in various experimental platforms, such as superconducting quantum circuits, Rydberg atoms, and trapped ions. The realization of high-fidelity control depends on the design of the pulse profile, for example, optimal radio frequency pulse sequences…...

1+ hour, 20+ min ago   (365+ words) Specifically, with single-copy measurements, the sample complexity is defined as "(ob p/), establishing a lower bound on the resources needed for accurate quantum state estimation. The researchers achieved this by analyzing an oblivious variant of the problem, estimating a single…...

1+ hour, 25+ min ago   (380+ words) This research demonstrates the existence of a DQPT by initializing the system in either the BTC or a non-BTC phase and subsequently driving it across the transition point. This work establishes a connection between dynamical quantum phase transitions and the…...

1+ hour, 32+ min ago   (703+ words) Researchers demonstrate that reliable quantum teleportation between city-sized networks is achievable with modest improvements to existing quantum hardware, specifically by optimising the performance of trapped-ion processors and ensemble-based memories to reach the classical limit of fidelity. https://quantumzeitgeist.com/wp-content/uploads/ents-3.jpg Scientists at Delft…...

1+ hour, 42+ min ago   (483+ words) Validation experiments, conducted both in simulation and with the physical robot on tasks including walking on flat surfaces and descending stairs, confirm the effectiveness of TOLEBI. Scientifically, the innovation lies in training a joint status estimator online, based on a…...

1+ hour, 58+ min ago   (784+ words) Researchers have demonstrated that applying algebraic principles, traditionally used in physics, to probability can better model uncertain events, particularly those exhibiting non-commutative behaviour relevant to modern computational science. https://quantumzeitgeist.com/wp-content/uploads/01-6.jpg Researchers are increasingly recognising the limitations of Kolmogorov's classical probability framework…...

2+ hour, 2+ min ago   (534+ words) Astrophysical foregrounds present a significant challenge to detecting the faint cosmological 21cm signal, typically manifesting as a wedge-like contamination in Fourier space due to chromatic effects in radio interferometers. This suggests the method is not merely interpolating data but genuinely recovering…...