Publications by PierGianLuca Porta Mana

Schrödinger-cat states - Size classification based on evolution or dissipation

Proceedings of SPIE - The International Society for Optical Engineering 5468 (2004) 335-343

G Björk, PGL Mana

The issue of estimating how "macroscopic" a superposition state is, can be addressed by analysing the rapidity of the state's evolution under a preferred observable, compared to that of the states forming the superposition. This fast evolution, which arises from the larger dispersion of the superposition state for the preferred operator, also represents a useful characteristic for interferometric applications. This approach can be compared to others in which a superposition's macroscopality is estimated in terms of the fragility to dissipation.

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