Poetri Tarabunga

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Nonstabilizerness - commonly known as magic - quantifies resources beyond
Clifford operations and is a fundamental resource for achieving universal
quantum computation. Recently, several tensor network methods have been
developed for computing the stabilizer Renyi entropy (SRE), a recently
introduced measure of magic. These methods have unveiled intriguing
insights into the behavior and properties of magic in many-body systems.
In this talk, I will introduce a new approach to compute the magic, by
representing the expectation values of Pauli strings as matrix product
state (MPS). This method paves the way for calculating various measures of
magic, including the SRE, the stabilizer nullity, and the Bell magic.
Furthermore, it allows for extracting the stabilizer group of an MPS. Our
method opens up the possibilty for exploring genuine magic within
many-body systems.

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ICTP Trieste
Seminar Room 0.03, ETP
Contact: Simon Trebst