Advances in Quantum Phenomena

Mengyao Huang

Quantum strong-interaction physics can yield collective phenomena over a vast range of energy scales and kinematics. We seek the emergence of quantum collective phenomena from underlying inter-particle interactions using advanced computational approaches with detailed theoretical analyses on both a low-energy (non-relativistic) and a high-energy (relativistic) scale. We select alpha-clustering in light nuclei for the non-relativistic phenomenon and a phase transition in quantum field theory for the relativistic phenomenon. Both problems are defined by microscopic Hamiltonians from the underlying theory and solved with advanced computational techniques. Detailed investigation of the results yields insights into remarkable emergent phenomena. This work proposes novel analytical and computational tools that lead to demonstrations on how non-perturbative quantum many-body theory in the Hamiltonian framework produces results that predict collective phenomena.

Solomon Budnik

Michael Kues

For more than 100 years, researchers explore quantum physics, which led to major breakthroughs, such as the laser, being today in daily use. With the increased control that is gained in recent years over quantum systems, the current advances in quantum technologies allow the exploitation and distinct control of quantum phenomena such as superposition and entanglement. These quantum phenomena enable fundamental performance advantages over normal classical procedures. They can be used for example to realize quantum-enhanced metrology, where quantum systems show the increase in sensitivity for metrological tasks, such as length measurements, as it will be exploited in the next generation of gravitational wave detection systems. Moreover, quantum physics is foreseen to enable quantum computing which could accelerate computational tasks for certain specific problems and enable entirely novel solutions with applications in drug development, material design or climate change. However current quantum computing technology is still in a prove-of-concept demonstration phase as it requires to prove scalability to large-scale quantum systems. More conceptually and technologically advanced is the use of quantum phenomena in order to realize future-prove communication systems, that means communication techniques which cannot be decrypted by future advances in mathematical concepts or computing resources. Here prove-of-concept systems in optical fiber as well as in satellite configurations and even commercial devices already exist, which require however advances with respect to multi-user operation increased transmission rates and reduced complexity.

Sungbin Lim, Roslan Abd-Shukor, K. H. Kwek

Brent W. Jonah

This work presents a significant advance in our understanding of macroscopic quantum phenomena and their potential for technological application. By providing a quantitatively-grounded theoretical framework—Coherence–Selection Interface Theory (CSIT)—we demonstrate that a class of long-observed but unexplained anomalous phenomena can be understood as engineered quantum coherence. The primary advance is twofold: first, we provide a falsifiable, thermodynamically consistent model for non-inertial propulsion and energy harvesting from environmental noise, directly explaining the observed correlation between Unidentified Anomalous Phenomena (UAPs) and nuclear facilities. Second, we establish the high probability of this model through a rigorous Bayesian analysis, yielding a posterior probability P(CSIT|data) > 0.99. This research reframes the UAP discussion from a speculative inquiry into a concrete problem of quantum engineering, opening a new avenue for research at the intersection of quantum information, thermodynamics, and observational physics, with profound implications for propulsion and energy systems. Keywords: quantum coherence, NISQ systems, non-unitary history, macroscopic phenomena, UAP explanation

Ion I. Cotǎescu