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RESEARCH PRODUCT
Generation of Schrödinger Cats in Trapped Ions
Antonino MessinaBenedetto Militellosubject
PhysicsHydrogen-like atomAngular momentumquantum non-demolition measurements ion traps angular momentumCondensed Matter PhysicsSettore FIS/03 - Fisica Della MateriaAzimuthal quantum numberClassical mechanicsTotal angular momentum quantum numberQuantum mechanicsOrbital motionAngular momentum couplingQuantum systemTrapped ion quantum computerdescription
A quantum system in interaction with a repeatedly measured one is subjected to a non-unitary time evolution provoking the decay of some states in favor of the remaining ones. Under appropriate hypotheses the system may be addressed exactly toward a quantum state or pushed into a pre-selected finite-dimensional subspace. On the basis of such a general strategy, we propose to exploit suitable vibronic couplings in order to ‘extract’ trapped ion center of mass states of motion characterized by well defined absolute value of an angular momentum projection. In particular, since it implies the simultaneous presence of opposite angular momentum projections, we show the realizability of Schrödinger Cat superpositions involving clockwise and counterclockwise two-dimensional motions. Specific examples are provided. The efficiency and the fidelity of the method are discussed.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-12-01 | Acta Physica Hungarica B) Quantum Electronics |