dorsal/arxiv
View SchemaBounds on the number of time steps for simulating arbitrary interaction graphs
| Authors | Dominik Janzing, Pawel Wocjan, Thomas Beth |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0203061 |
| URL | https://arxiv.org/abs/quant-ph/0203061 |
Abstract
In previous papers we have considered mutual simulation of n-partite pair-interaction Hamiltonians. We have focussed on the running time overhead of general simulations, while considering the required number of time steps only for special cases (decoupling and time-reversal). These two complexity measures differ significantly. Here we derive lower bounds on the number of time steps for general simulations. In particular, the simulation of interaction graphs with irrational spectrum requires at least n steps. We discuss as examples graphs that correspond to graph codes and nearest neighbor interactions in 1- and 2-dimensional lattices. In the latter case the lower bounds are almost tight.
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"abstract": "In previous papers we have considered mutual simulation of n-partite\npair-interaction Hamiltonians. We have focussed on the running time overhead of\ngeneral simulations, while considering the required number of time steps only\nfor special cases (decoupling and time-reversal). These two complexity measures\ndiffer significantly. Here we derive lower bounds on the number of time steps\nfor general simulations. In particular, the simulation of interaction graphs\nwith irrational spectrum requires at least n steps. We discuss as examples\ngraphs that correspond to graph codes and nearest neighbor interactions in 1-\nand 2-dimensional lattices. In the latter case the lower bounds are almost\ntight.",
"arxiv_id": "quant-ph/0203061",
"authors": [
"Dominik Janzing",
"Pawel Wocjan",
"Thomas Beth"
],
"categories": [
"quant-ph"
],
"title": "Bounds on the number of time steps for simulating arbitrary interaction graphs",
"url": "https://arxiv.org/abs/quant-ph/0203061"
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