Evidence procedure for efficient quantum state tomography

Abstract

I show that in tomographic experiments measurement of a small set of observables suffices to confirm or incrementally amend prior expectations with a high degree of confidence. To this end I adapt the evidence procedure, an estimation technique used in classical image reconstruction, to use in quantum state tomography.

7 pages; v3: version to appear in Phys. Rev. A

References in corpus (5)

• Scalable multi-particle entanglement of trapped ions
• When are correlations quantum? -- Verification and quantification of entanglement by simple measurements
• Heralded Polynomial-Time Quantum State Tomography
• Reconstructing quantum states efficiently
• Efficient Direct Tomography for Matrix Product States

Cited by in corpus (1)

• Inferring the Gibbs state of a small quantum system