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arXiv:quant-ph/0007076 · New Journal of Physics

Schrödinger-cat entangled state reconstruction in the Penning trap

Michol Massini, Mauro Fortunato, Stefano Mancini, Paolo Tombesi, David Vitali

Published Sep 12, 2000• 8 citations
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Abstract

We present a tomographic method for the reconstruction of the full entangled quantum state for the cyclotron and spin degrees of freedom of an electron in a Penning trap. Numerical simulations of the reconstruction of several significant quantum states show that the method turns out to be quite accurate.
DOI
10.1088/1367-2630/2/1/320

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•Jan 1, 2004•19 citations
The quantum non-demolition measurement of the cyclotron excitations of an electron trapped in a Penning trap is shown to be accessible, with the modern technology, by only considering the coupling between the axial and the cyclotron motions induced by the relativistic correction to the electron's mass. It is shown that such a measurement is possible only when the spin state of the electron is preassigned and the wave function will then collapse into a Fock state. When this is not the case the wave function of the electron will collapse into an entangled state.
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