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- W2057979115 abstract "We provide a recursive method for constructing product formula approximations to exponentials of commutators, giving the first approximations that are accurate to arbitrarily high order. Using these formulas, we show how to approximate unitary exponentials of (possibly nested) commutators using exponentials of the elementary operators, and we upper bound the number of elementary exponentials needed to implement the desired operation within a given error tolerance. By presenting an algorithm for quantum search using evolution according to a commutator, we show that the scaling of the number of exponentials in our product formulas with the evolution time is nearly optimal. Finally, we discuss applications of our product formulas to quantum control and to implementing anticommutators, providing new methods for simulating many-body interaction Hamiltonians." @default.
- W2057979115 created "2016-06-24" @default.
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- W2057979115 date "2013-06-01" @default.
- W2057979115 modified "2023-10-17" @default.
- W2057979115 title "Product formulas for exponentials of commutators" @default.
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- W2057979115 doi "https://doi.org/10.1063/1.4811386" @default.
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