## Abstract A novel scheme to realize the whole class of quantum nondemolition (QND) measurements of a field quadrature is suggested. The setup requires linear optical components and squeezers, and allows optimal QND measurements of quadratures, which minimize the information gain versus state dist
Informational completeness of continuous-variable measurements
✍ Scribed by Sych, D.; Řeháček, J.; Hradil, Z.; Leuchs, G.; Sánchez-Soto, L. L.
- Book ID
- 120069080
- Publisher
- The American Physical Society
- Year
- 2012
- Tongue
- English
- Weight
- 89 KB
- Volume
- 86
- Category
- Article
- ISSN
- 1050-2947
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## Abstract Observables of quantum systems can possess either a discrete or a continuous spectrum. For example, upon measurements of the photon number of a light state, discrete outcomes will result whereas measurements of the light's quadrature amplitudes result in continuous outcomes. If one uses
Quantum information is a rapidly advancing area of interdisciplinary research. It may lead to real-world applications for communication and computation unavailable without the exploitation of quantum properties such as nonorthogonality or entanglement. This article reviews the progress in quantum in