82 citations · 131 across the 4 of their papers we have counts for
4 papers
Collective processes of an ensemble of spin-1/2 particles
Bradley A. Chase, J. M. Geremia
When the dynamics of a spin ensemble are expressible solely in terms of symmetric processes and collective spin operators, the symmetric collective states of the ensemble are prese…
Collective States and Symmetric Local Decoherence in Large Ensembles of Qubits
Bradley A. Chase, J. M. Geremia
The symmetric collective states of an atomic spin ensemble (i.e., many-body states that are invariant under particle exchange) are not preserved by decoherence that acts identicall…
Universal quantum walks and adiabatic algorithms by 1D Hamiltonians
Bradley A. Chase, Andrew J. Landahl
We construct a family of time-independent nearest-neighbor Hamiltonians coupling eight-state systems on a 1D ring that enables universal quantum computation. Hamiltonians in this f…
Efficient feedback controllers for continuous-time quantum error correction
Bradley A. Chase, Andrew J. Landahl, J. M. Geremia
We present an efficient approach to continuous-time quantum error correction that extends the low-dimensional quantum filtering methodology developed by van Handel and Mabuchi [qua…