We study collective state preparation and channel encoding in fermionic systems under parity superselection and composition governed by the canonical anticommutation relations. For a two-mode Gaussian state $\tau$, we obtain the exact entanglement of formation, $E_{\mathrm F}^{\mathrm{phys}}(\tau^{\otimes m})=\lceil m/...
Farzin Salek, Amir-Reza Negari, Graeme Smith et al.· 0 citations
Connecting mathematical formalism in open quantum systems to its underlying physics necessitates the notion of a dilation, a way to bridge stochastic dynamics with deterministic Schr\"odinger evolution on a larger space. Although dilations are well known in the literature for states, channels, and quantum combs, there...
Jonáš Fuksa, Clara Wassner, Jens Eisert et al.· 1 citation
Matchgate circuits describe classically tractable dynamics in a physically relevant setting while nonetheless exhibiting features characteristic of complex quantum systems, such as high amounts of magic. This invites the broader question: to what extent are typical complexity measures saturated under trivial dynamics?...
Gregory A. L. White, Jens Eisert, Neil Dowling· 1 citation
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