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Symmetry protection of measurement-based quantum computation in ground states
Dominic V. Else, Stephen D. Bartlett, Andrew C. Doherty
The two-dimensional cluster state, a universal resource for measurement-based quantum computation, is also the gapped ground state of a short-ranged Hamiltonian. Here, we examine t…
Optimizing qubit Hamiltonian parameter estimation algorithms using PSO
Alexandr Sergeevich, Stephen D. Bartlett
We develop qubit Hamiltonian single parameter estimation techniques using a Bayesian approach. The algorithms considered are restricted to projective measurements in a fixed basis,…
Nonnegative subtheories and quasiprobability representations of qubits
Joel J. Wallman, Stephen D. Bartlett
Negativity in a quasiprobability representation is typically interpreted as an indication of nonclassical behavior. However, this does not preclude states that are non-negative fro…
Symmetry-protected phases for measurement-based quantum computation
Dominic V. Else, Ilai Schwarz, Stephen D. Bartlett +1
Ground states of spin lattices can serve as a resource for measurement-based quantum computation. Ideally, the ability to perform quantum gates via measurements on such states woul…