Fidelity for qubits and photon states in tomographic probability representation

Fidelity for qubits and photon states in tomographic probability representation

Review of the probability representation of quantum states based on the tomographic‐probability notion is presented. Classical and quantum states are studied and the difference of tomographic probabilities describing the states in both domains is elucidated. New expressions for fidelity in quantum d...

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Veröffentlicht in:Fortschritte der Physik 2009-11, Vol.57 (11-12), p.1064-1070
Hauptverfasser: Man'ko, O.V., Man'ko, V.I.
Format: Artikel
Sprache:eng
Schlagworte:
probability
Quantum states
spin tomography
symplectic tomography
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Beschreibung
Zusammenfassung:Review of the probability representation of quantum states based on the tomographic‐probability notion is presented. Classical and quantum states are studied and the difference of tomographic probabilities describing the states in both domains is elucidated. New expressions for fidelity in quantum domain in terms of the tomographic probabilities for both discrete qubit states and continuous quadrature components of photon are obtained.
ISSN:0015-8208
1521-3978
DOI:10.1002/prop.200900086