Authors
Zhang Jiang, Jarrod McClean, Ryan Babbush, Hartmut Neven
Publication date
2019/12/18
Journal
Physical Review Applied
Volume
12
Issue
6
Pages
064041
Publisher
American Physical Society
Description
Fermion-to-qubit mappings that preserve geometric locality are especially useful for simulating lattice fermion models (eg, the Hubbard model) on a quantum computer. They avoid the overhead associated with geometric nonlocal parity terms in mappings such as the Jordan-Wigner transformation and the Bravyi-Kitaev transformation. As a result, they often provide quantum circuits with lower depth and gate complexity. In such encodings, fermionic states are encoded in the common+ 1 eigenspace of a set of stabilizers, akin to stabilizer quantum error-correcting codes. Here, we discuss several known geometric locality-preserving mappings and their abilities to correct and detect single-qubit errors. We introduce a geometric locality-preserving map, whose stabilizers correspond to products of Majorana operators on closed paths of the fermionic hopping graph. We show that our code, which we refer to as the …
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