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- W4221154836 abstract "The problem of simulating through quantum walks the curved space-time propagation of Dirac fermions is revisited, taking the $$(1 + 1)$$ D case as an example. New quantum walks are introduced which encode the space-time geometry, not in the mixing operators, but in new unitary shift operators which carry out a position-dependent translation of the wave function components. These walks simulate Dirac fermions in arbitrary curved space-times and coordinates. Contrary to previously proposed general alternatives, the wave functions of the new walks have as many components as usual Dirac spinors, and not twice that number. In particular, in $$(1 + 1)$$ D space-times, only one qubit is needed at each lattice point, which makes it easier to perform quantum simulations of the Dirac dynamics on current NISQs quantum devices. Numerical simulations of the Dirac dynamics in the post Newtonian, so-called Gravitoelectromagnetism regime are presented as an illustration. The possible usefulness of the new shift operators and quantum walks in other more general contexts is also discussed." @default.
- W4221154836 created "2022-04-03" @default.
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- W4221154836 date "2023-03-06" @default.
- W4221154836 modified "2023-10-11" @default.
- W4221154836 title "Minimal quantum walk simulation of Dirac fermions in curved space-times" @default.
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- W4221154836 doi "https://doi.org/10.1007/s40509-023-00297-1" @default.
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