02. The power of entanglement
In this lecture we explore operations that let us go from density matrices to pure states (on a larger system), and from pure states to density matrices (on a smaller system). The first is called a purification, and the second the partial trace.
Quantum Cryptography by TU Delft OpenCourseWare is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
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