New entanglement properties in systems of higher-spin particles

changzheng zhou, ZIQING zhou

Spin plays a role in physics, particularly in condensed matter physics and manybody systems. High-spin particles (e.g., spin-2 gravitons and spin-3 particles) can exhibit significant condensation effects and collective behavior when present in large quantities, even when the coupling strength between them is relatively weak. This phenomenon reveals the intricate relationship between spin and macroscopic properties, offering new perspectives for the development of novel materials and quantum computing. This paper aims to explore the many-body interactions, ”triggering force,” and unique characteristics of high-spin particles in quantum entanglement processes

Rosario Fazio, Chiara Macchiavello

Huaixiang Huang, Xiaoguang Wang, Zhe Sun +1 more

P. Chithrabhanu, Abdul Rahim Aadhi, Salla Gangi Reddy +3 more

We describe a novel multi-particle, multi-degree entangled system in which one particle is entangled to other particles in different degrees of freedom. It allows efficient teleportation of a higher dimensional quantum state. We give a new protocol for quantum key distribution using this state and describe possible experimental realizations of the proposed QKD as well as the teleportation protocols.

Jeffrey Scott Pratt

George Svetlichny

We investigate the symmetry properties of hierarchies of non-linear Schrödinger equations, introduced in [2], which describe non-interacting systems in which tensor product wave-functions evolve by independent evolution of the factors (the separation property).We show that there are obstructions to lifting symmetries existing at a certain number of particles to higher numbers.Such obstructions vanish for particles without internal degrees of freedom and the usual space-time symmetries.For particles with internal degrees of freedom, such as spin, these obstructions are present and their circumvention requires a choice of a new term in the equation for each particle number.A Lie-algebra approach for non-linear theories is developed.