Recent content by Seckin Sefi

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    Graduate Quick Braket Questions: A|B> & <B|A

    Just to remind must be (<B|A)|C>=<B|(dag(A)|C>) as Fredrik did as
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    Graduate Quantum Network and Quantum Imaging

    This is very interesting, but I couldn't find anything in schloar.google about Babarasi. Are you sure about the name?
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    Graduate Can Slow Glass or Optical Black Holes Be Used for Storing Photons?

    Actually in the process that is misleadingly called "teleportation" is just for carrying(?!) the quantum state so you don't "store light between to particle" (also process's speed is classicaly bounded). You need something else to store light, for instance a medium which decreases the speed...
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    Graduate Can Slow Glass or Optical Black Holes Be Used for Storing Photons?

    In general teleportation protocol, an entagled pair is used as a source for teleporting an unknown quantum state and the fidelity, which depends on the source characteristics, is defined as the resemblance of final state to the teleportated state . Suppose we have given a density matrix for an...
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    Undergrad How Can I Determine if a Matrix is Positive?

    "A positive operator A is defined to be an operator such that for any vector |v>=!0, <v|A|v> is real, non-negative number." Can somebody tell me how can I check if a matrice (for example 4x4) is positive or not? Thanks in advance