Multiphoton coherent manipulation in large-spin qubits

Details Multiphoton coherent manipulation in large-spin qubits Multiphoton coherent manipulation in large-spin qubits

2008-12-24

arxiv.org/abs/0812.4534v3

Phys. Rev. Lett. 102, 050501 (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Published version

Scientific paper

10.1103/PhysRevLett.102.050501

Large spin Mn2+ ions (S=5/2) diluted in a non-magnetic MgO matrix of high crystalline symmetry are used to realize a six level system that can be operated by means of multi-photon coherent Rabi oscillations. This spin system has a very small anisotropy which can be tuned in-situ to reversibly transform the system between harmonic and non-harmonic level configurations. Decoherence effects are strongly suppressed as a result of the quasi-isotropic electron interaction with the crystal field and with the 55Mn nuclear spins. These results suggest new ways of manipulating, reading and resetting spin quantum states which can be applied to encode a qubit across several quantum levels.

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