Novelty, efficacy, and significance of weak measurements for quantum tomography
Open Access
- 30 December 2015
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 92 (6), 062133
- https://doi.org/10.1103/physreva.92.062133
Abstract
The use of weak measurements for performing quantum tomography is enjoying increased attention due to several recent proposals. The claimed merits of using weak measurements in this context are varied, but are generally represented by novelty, increased efficacy, and foundational significance. We critically evaluate two proposals that make such claims and find that weak measurements are not an essential ingredient for most of their claimed features.Keywords
Funding Information
- National Science Foundation (PHY-1212445)
- Natural Sciences and Engineering Research Council of Canada
- Automotive Research Center (CE11001013)
- Army Research Office (W911NF-14-1-0098, W911NF-14-1-0103)
This publication has 41 references indexed in Scilit:
- Persistent Control of a Superconducting Qubit by Stroboscopic Measurement FeedbackPhysical Review X, 2013
- Optimal, reliable estimation of quantum statesNew Journal of Physics, 2010
- Choice of measurement sets in qubit tomographyPhysical Review A, 2008
- Efficient Quantum-State Estimation by Continuous Weak Measurement and Dynamical ControlPhysical Review Letters, 2006
- Weak Measurements Are UniversalPhysical Review Letters, 2005
- Information-tradeoff relations for finite-strength quantum measurementsPhysical Review A, 2001
- Bulk quantum computation with nuclear magnetic resonance: theory and experimentProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 1998
- Quantum-state estimationPhysical Review A, 1997
- Optimal Extraction of Information from Finite Quantum EnsemblesPhysical Review Letters, 1995
- Quantum-mechanical model for continuous position measurementsPhysical Review A, 1987