Surmounting intrinsic quantum-measurement uncertainties in Gaussian-state tomography with quadrature squeezing

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F15%3A33154704" target="_blank" >RIV/61989592:15310/15:33154704 - isvavai.cz</a>

Result on the web

<a href="http://www.nature.com/articles/srep12289" target="_blank" >http://www.nature.com/articles/srep12289</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/srep12289" target="_blank" >10.1038/srep12289</a>

Result language

angličtina

Original language name

Surmounting intrinsic quantum-measurement uncertainties in Gaussian-state tomography with quadrature squeezing

Original language description

We reveal that quadrature squeezing can result in significantly better quantum-estimation performance with quantum heterodyne detection (of H. P. Yuen and J. H. Shapiro) as compared to quantum homodyne detection for Gaussian states, which touches an important aspect in the foundational understanding of these two schemes. Taking single-mode Gaussian states as examples, we show analytically that the competition between the errors incurred during tomogram processing in homodyne detection and the Arthurs-Kelly uncertainties arising from simultaneous incompatible quadrature measurements in heterodyne detection can often lead to the latter giving more accurate estimates. This observation is also partly a manifestation of a fundamental relationship between the respective data uncertainties for the two schemes. In this sense, quadrature squeezing can be used to overcome intrinsic quantum-measurement uncertainties in heterodyne detection.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BH - Optics, masers and lasers

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Scientific Reports

ISSN

2045-2322

e-ISSN

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Volume of the periodical

5

Issue of the periodical within the volume

JUL

Country of publishing house

GB - UNITED KINGDOM

Number of pages

15

Pages from-to

"12289-1"-"12289-15"

UT code for WoS article

000358244200001

EID of the result in the Scopus database

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