Quantum-state tomography for spin-l systems
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概要
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We show that the density matrix of a spin-l system can be described entirely in terms of the measurement statistics of projective spin measurements along a minimum of 4l + 1 different spin directions. It is thus possible to represent the complete quantum statistics of any N-level system within the spherically symmetric three-dimensional space defined by the spin vector. An explicit method for reconstructing the density matrix of a spin-1 system from the measurement statistics of five nonorthogonal spin directions is presented and the generalization to spin-l systems is discussed.
- American Physical Societyの論文
- 2004-04-23
American Physical Society | 論文
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