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Title: Geometric representations of braid and Yang–Baxter gates

Journal Article · · Journal of Physics. A, Mathematical and Theoretical
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [3]; ORCiD logo [4];  [5]
  1. Northwestern University, Xi'an (China); Shaanxi Key Laboratory for Theoretical Physics Frontiers, Xi'an (China); Peng Huanwu Center for Fundamental Theory, Xi'an (China)
  2. Northwestern University, Xi'an (China). Institute of Modern Physics; Peng Huanwu Center for Fundamental Theory, Xi'an (China)
  3. Brookhaven National Laboratory (BNL), Upton, NY (United States)
  4. Stony Brook Univ., NY (United States)
  5. Shaanxi Key Laboratory for Theoretical Physics Frontiers, Xi'an (China); Peng Huanwu Center for Fundamental Theory, Xi'an (China); Northwestern University, Xi'an (China). Institute of Modern Physics

Brick-wall circuits composed of the Yang–Baxter gates are integrable. It becomes an important tool to study the quantum many-body system out of equilibrium. To put the Yang–Baxter gate on quantum computers, it has to be decomposed into the native gates of quantum computers. It is favorable to apply the least number of native two-qubit gates to construct the Yang–Baxter gate. We study the geometric representations of all X-type braid gates and their corresponding Yang–Baxter gates via the Yang–Baxterization. We find that the braid and Yang–Baxter gates can only exist on certain edges and faces of the two-qubit tetrahedron. We identify the parameters by which the braid and Yang–Baxter gates are the Clifford gate, the matchgate, and the dual-unitary gate. The geometric representations provide the optimal decompositions of the braid and Yang–Baxter gates in terms of other two-qubit gates. We also find that the entangling powers of the Yang–Baxter gates are determined by the spectral parameters. Our results provide the necessary conditions to construct the braid and Yang–Baxter gates on quantum computers.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
Grant/Contract Number:
SC0012704
OSTI ID:
2478424
Report Number(s):
BNL--226332-2024-JAAM
Journal Information:
Journal of Physics. A, Mathematical and Theoretical, Journal Name: Journal of Physics. A, Mathematical and Theoretical Journal Issue: 44 Vol. 57; ISSN 1751-8113
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

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