Behaviour and survival of 'Quantum-ness' in realizable frustrated Möbius wheels

Genuine Quantum-ness present in Quantum Systems is a proven resource for implementing Quantum Information and Computation Protocols which cannot be thought classically. These Quantum-ness measures encompass non-local ones... [ view full abstract ]

Genuine Quantum-ness present in Quantum Systems is a proven resource for implementing Quantum Information and Computation Protocols which cannot be thought classically. These Quantum-ness measures encompass non-local ones known as quantum entanglement (QE) and quantum information theoretic (QIT) ones, eg. Quantum Discord (QD). In this paper, some well-known measures of quantum entanglement and quantum discord have been studied in a novel wheel-like frustrated molecular magnetic system, with special emphasis on the survival of the measures in the thermal states. These type of quantum systems can be realized in real compounds using coordination chemistry synthesis and in ultra-cold atoms in optical lattices. Numerical Diagonalization techniques have been used to determine the full Eigen spectra of the Wheel-like systems. A number of non-trivial features exhibited by the measures have been found in the vicinity and away from the ground state level crossings. A comparison among the different correlation measures regarding signaling the so-called “entanglement transitions” in the said quantum systems has been presented. The role of topological frustration in determining the behavior of the different correlation measures in the system has been investigated and compared to analogous non-frustrated scenario. The measures, being operational ones, can be used to realize and manipulate the resource of quantum-ness in real-world experiments.