Self-calibration for self-consistent tomography

Author(s)

Mogilevtsev, D. ^{[1, 2]} ; Rehacek, J. ^[3] ; Hradil, Z. ^[3]

Affiliation

^[1] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210170 Santo Andre, SP - Brazil

^[2] Belarus Natl Acad Sci, Inst Phys, Minsk 220072 - Byelarus

^[3] Palacky Univ, Dept Opt, Olomouc 77146 - Czech Republic

• Document type: Journal article
• Source: NEW JOURNAL OF PHYSICS; v. 14, SEP 3 2012.
• Web of Science Citations: 19

Abstract

Self-calibrating states are introduced as quantum resources for the simultaneous reconstruction of a quantum state and measurement device. Simple criteria for a state being self-calibrating are formulated. Theory applies to realistic state estimation scenarios, where the detection model is nonlinear in unknown parameters of the measuring device. Examples discussed include time multiplexed detection with on/off detectors and quantum homodyne tomography. The thermally noised single-photon states and Gaussian states are self-calibrating for these schemes. For homodyne tomography, statistical tests applied to raw measured data are sufficient for judging whether or not the signal state is self-calibrating without any a priori information. (AU)

• FAPESP's process: 11/19696-0 - Deterministic generation of non-classical states by designed loss and quantum state diagnosis
• Grantee: Valery Shchesnovich
• Support Opportunities: Research Grants - Visiting Researcher Grant - International