Author

Ravi Kunjwal

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Preprint Sep 2026

Causal inequalities witness non-stabilizerness

Stabilizer operations describe a fragment of quantum theory that is known to be efficiently classically simulable, thanks to the Gottesman-Knill theorem. For this reason, nonstabilizer resources such as magic states are necessary for universal quantum computation. Interestingly, the operational and axiomatic approaches...

Leonardo Vaglini, Nasra Daher Ahmed, Ravi Kunjwal · 0 citations

Preprint Sep 2026

Characterizing unitaries via quasi-process functions

It is well-known that every n-qubit unitary can be decomposed into a product of controlled single-qubit unitaries. We show that the control conditions in such a decomposition naturally define a quasi-process function, an object that originally came up in the study of indefinite causal order. Here quasi-process function...

Nasra Daher Ahmed, Ravi Kunjwal · 0 citations