14 papers
Preparing multi-qudit states in a definite-weight subspace
Nabi Zare Harofteh, Rafael I. Nepomechie
We formulate a deterministic algorithm for preparing arbitrary multi-qudit states in a definite-weight subspace. By ordering the corresponding computational basis states according…
Spin- -eigenstate preparation
Nabi Zare Harofteh, Rafael I. Nepomechie
We formulate a deterministic algorithm for preparing a general -eigenstate of a spin- chain of length . These states consist of linear combinations of computational bas…
symmetry of XX spin chains
Nicolas Crampé, Rafael I. Nepomechie, Luc Vinet +1
We show that, after suitably adjusting a uniform transverse magnetic field, the generic inhomogeneous open XX spin chain has a two-fold degeneracy, and an exact symmetry wh…
Simple ways of preparing qudit Dicke states
Noah B. Kerzner, Federico Galeazzi, Rafael I. Nepomechie
Dicke states are permutation-invariant superpositions of qubit computational basis states, which play a prominent role in quantum information science. We consider here two higher-d…
Boundary reflection matrices of massive -perturbed unitary minimal models
Zoltan Bajnok, Rafael I. Nepomechie, Paul A. Pearce
We propose explicit expressions for the boundary reflection matrices of the series of massive scattering theories, obtained by perturbing the unitar…
Quantum-group-invariant models: Bethe ansatz and finite-size spectrum
Holger Frahm, Sascha Gehrmann, Rafael I. Nepomechie +1
We consider the quantum integrable spin chain models associated with the Jimbo R-matrix based on the quantum affine algebra , subject to quantum-group-invariant boun…