Characterizing Multiparticle Entanglement Using the Schmidt Decomposition of Operators
Sophia Denker
Broschiertes Buch

Characterizing Multiparticle Entanglement Using the Schmidt Decomposition of Operators

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Characterizing entanglement is an important issue in quantum information, as it is considered to be a resource for many applications such as quantum key distribution or quantum metrology. One useful tool to detect and quantify entanglement are witness operators. A standard way to construct them is based on the fidelity of pure states and mathematically relies on the Schmidt decomposition of vectors. In this book a method to build entanglement witnesses using the Schmidt decomposition of operators is presented. One can show that these are strictly stronger than the fidelity witnesses. Moreover,...