Dr Nicholas Chancellor's Outputs (3)

Practical designs for permutation-symmetric problem Hamiltonians on hypercubes (2019)
Journal Article
Dodds, A. B., Kendon, V., Adams, C. S., & Chancellor, N. (2019). Practical designs for permutation-symmetric problem Hamiltonians on hypercubes. Physical Review A, 100(3), Article 032320. https://doi.org/10.1103/physreva.100.032320

We present a method to experimentally realize large-scale permutation-symmetric Hamiltonians for continuous-time quantum protocols such as quantum walks and adiabatic quantum computation. In particular, the method can be used to perform an encoded co... Read More about Practical designs for permutation-symmetric problem Hamiltonians on hypercubes.

Quantum Codes from Classical Graphical Models (2019)
Journal Article
Roffe, J., Zohren, S., Horsman, D., & Chancellor, N. (2020). Quantum Codes from Classical Graphical Models. IEEE Transactions on Information Theory, 66(1), 130-146. https://doi.org/10.1109/tit.2019.2938751

We introduce a new graphical framework for designing quantum error correction codes based on classical principles. A key feature of this graphical language, over previous approaches, is that it is closely related to that of factor graphs or graphical... Read More about Quantum Codes from Classical Graphical Models.

Domain wall encoding of discrete variables for quantum annealing and QAOA (2019)
Journal Article
Chancellor, N. (2019). Domain wall encoding of discrete variables for quantum annealing and QAOA. Quantum Science and Technology, 4(4), Article 045004. https://doi.org/10.1088/2058-9565/ab33c2

In this paper I propose a new method of encoding discrete variables into Ising model qubits for quantum optimization. The new method is based on the physics of domain walls in one dimensional Ising spin chains. I find that these encodings and the enc... Read More about Domain wall encoding of discrete variables for quantum annealing and QAOA.