We investigate the spin states obtained by extracting n electrons from closed-shell fermionic states. A partition of the system is defined through the introduction of the extraction modes. We derive the expression of the n-body reduced density matrices, which represent the extracted spin states. We show that these states exhibit different forms of spin entanglement, whose detection is discussed in terms of the spin-squeezing inequalities.
Spins extracted from fermionic states and their entanglement properties
Troiani F.
Primo
;Secchi A.Secondo
;Pittalis S.Ultimo
2025
Abstract
We investigate the spin states obtained by extracting n electrons from closed-shell fermionic states. A partition of the system is defined through the introduction of the extraction modes. We derive the expression of the n-body reduced density matrices, which represent the extracted spin states. We show that these states exhibit different forms of spin entanglement, whose detection is discussed in terms of the spin-squeezing inequalities.File in questo prodotto:
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