Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevLett.108.240501
Title: Experimental schmidt decomposition and state independent entanglement detection
Authors: Laskowski, W.
Richart, D.
Schwemmer, C.
Paterek, T. 
Weinfurter, H.
Issue Date: 11-Jun-2012
Citation: Laskowski, W., Richart, D., Schwemmer, C., Paterek, T., Weinfurter, H. (2012-06-11). Experimental schmidt decomposition and state independent entanglement detection. Physical Review Letters 108 (24) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevLett.108.240501
Abstract: We introduce an experimental procedure for the detection of quantum entanglement of an unknown quantum state with a small number of measurements. The method requires neither a priori knowledge of the state nor a shared reference frame between the observers and can thus be regarded as a perfectly state-independent entanglement witness. The scheme starts with local measurements, possibly supplemented with suitable filtering, which essentially establishes the Schmidt decomposition for pure states. Alternatively we develop a decision tree that reveals entanglement within few steps. These methods are illustrated and verified experimentally for various entangled states of two and three qubits. © 2012 American Physical Society.
Source Title: Physical Review Letters
URI: http://scholarbank.nus.edu.sg/handle/10635/112437
ISSN: 00319007
DOI: 10.1103/PhysRevLett.108.240501
Appears in Collections:Staff Publications

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