Control of trapped-ion quantum states with optical pulses

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We present new results on the quantum control of systems with infinitely large Hilbert spaces. A control-theoretic analysis of the control of trapped ion quantum states via optical pulses is performed. We demonstrate how resonant bichromatic fields can be applied in two contrasting ways -- one that makes the system completely uncontrollable, and the other that makes the system controllable. In some interesting cases, the Hilbert space of the qubit-harmonic oscillator can be made finite, and the Schrödinger equation controllable via bichromatic resonant pulses. Extending this analysis to the quantum states of two ions, a new scheme for producing entangled qubits is discovered.
Submitted to Physical Review Letters

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Quantum Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/91738

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/quant-ph/0401032
 http://arxiv.org/abs/quant-ph/0401032
 Physical Review Letters 92, 113004 (2004).
 doi:10.1103/PhysRevLett.92.113004

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