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Computational power of matchgates with supplementary resources
Martin Hebenstreit, Richard Jozsa, Barbara Kraus +1
We study the classical simulation complexity in both the weak and strong senses, of matchgate (MG) computations supplemented with all combinations of settings involving inclusion o…
Mixed-state entanglement from local randomized measurements
Andreas Elben, Richard Kueng, Hsin-Yuan Huang +8
We propose a method for detecting bipartite entanglement in a many-body mixed state based on estimating moments of the partially transposed density matrix. The estimates are obtain…
Local Transformations of Multiple Multipartite States
Antoine Neven, David Gunn, Martin Hebenstreit +1
Understanding multipartite entanglement is vital, as it underpins a wide range of phenomena across physics. The study of transformations of states via Local Operations assisted by…
Symmetries and entanglement of stabilizer states
Matthias Englbrecht, Barbara Kraus
Stabilizer states constitute a set of pure states which plays a dominant role in quantum error correction, measurement--based quantum computation, and quantum communication. Centra…