Experimental measurement of collective nonlinear entanglement witness for two qubits

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00469472" target="_blank" >RIV/68378271:_____/16:00469472 - isvavai.cz</a>
Alternative codes found
RIV/61989592:15310/16:33160808
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevA.94.052334" target="_blank" >http://dx.doi.org/10.1103/PhysRevA.94.052334</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevA.94.052334" target="_blank" >10.1103/PhysRevA.94.052334</a>

Result language
angličtina
Original language name
Experimental measurement of collective nonlinear entanglement witness for two qubits
Original language description
We present a proof-of-principle experiment demonstrating measurement of the collectibility, a nonlinear entanglement witness proposed by L. Rudnicki et al. [Phys. Rev. Lett. 107, 150502 ( 2011)]. This entanglement witness works for both mixed and pure two-qubit states. In the latter case it can be used to measure entanglement in terms of the negativity. We measured the collectibility for three distinct classes of photonic polarization-encoded two-qubit states, i.e., maximally entangled, separable, and maximally mixed states. We demonstrate that the measurement procedure is feasible and robust against typical experimental shortcomings such as imperfect two-photon indistinguishability.
Czech name
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Czech description
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Type
J<sub>x</sub> - 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
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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