Many-body entanglement is studied within the algebraic approach to quantum physics in systems made of Majorana fermions. In this framework, the notion of separability stems from partitions of the algebra of observables and properties of the associated correlation functions, rather than on particle tensor products. This allows a complete characterization of non-separable Majorana fermion states to be obtained. These results may have direct application in quantum metrology: using Majorana systems, sub-shot-noise accuracy in parameter estimations can be achieved without preliminary resourceconsuming, state entanglement operations.

Entanglement in algebraic quantum mechanics: Majorana fermion systems

BENATTI, FABIO;FLOREANINI, ROBERTO
2016

Abstract

Many-body entanglement is studied within the algebraic approach to quantum physics in systems made of Majorana fermions. In this framework, the notion of separability stems from partitions of the algebra of observables and properties of the associated correlation functions, rather than on particle tensor products. This allows a complete characterization of non-separable Majorana fermion states to be obtained. These results may have direct application in quantum metrology: using Majorana systems, sub-shot-noise accuracy in parameter estimations can be achieved without preliminary resourceconsuming, state entanglement operations.
http://iopscience.iop.org/article/10.1088/1751-8113/49/30/305303
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11368/2895720
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