ISSN:
1349-9432
Keywords:
quantum phase dynamics
;
magnetic quantum tunnelling
;
collapse and rivival
;
phase properties
;
Jaynes-Cummings model
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract We investigate the dynamics of probability distributions of an initially one-mode coherent field interacting with a four-state molecular system, which is a single magnet with a tunneling across an anisotropic barrier, using a numerically exact approach. The population for each state, the phase properties of and $$\langle{\rm cos}^2 \hat{\varphi}\rangle$$ , and $$\triangle {\rm cos}^2 \varphi(\equiv \langle {\rm cos}^2 \hat{\varphi}\rangle-{\langle {\rm cos} \hat{\varphi}\rangle}^2$$ ), the entropy are calculated for a model system. The model predicts that the molecule and field become asymptotically disentangled at half of the revival time, and that optical Schrödinger-cat and magnetic Schrödinger-cat states are generated.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s10043-999-0227-9
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