86 citations · 265 across the 7 of their papers we have counts for
7 papers
Symmetry & Controllability for Spin Networks with a Single-Node Control
Xiaoting Wang, Peter Pemberton-Ross, Sophie G Schirmer
We consider the relation of symmetries and subspace controllability for spin networks with XXZ coupling subject to control of a single node by a local potential (Z-control). Such n…
Perfect Quantum Routing in Regular Spin Networks
Peter J. Pemberton-Ross, Alastair Kay
Regular families of coupled quantum networks are described such the unknown state of a qubit can be perfectly routed from any node to any other node in a time linear in the distanc…
Quantum Control Theory for State Transformations: Dark States and their Enlightenment
Peter J. Pemberton-Ross, Alastair Kay, S. G. Schirmer
For many quantum information protocols such as state transfer, entanglement transfer and entanglement generation, standard notions of controllability for quantum systems are too st…
Fast, high fidelity information transmission through spin chain quantum wires
S. G. Schirmer, P. J. Pemberton-Ross
Spin chains have been proposed as quantum wires for information transfer in solid state quantum architectures. We show that huge gains in both transfer speed and fidelity are possi…
Computation on Spin Chains with Limited Access
Alastair Kay, Peter J. Pemberton-Ross
We show how to implement quantum computation on a system with an intrinsic Hamiltonian by controlling a limited subset of spins. Our primary result is an efficient control sequence…
Comparative Analysis of Control Strategies
Sonia G Schirmer, Peter J Pemberton-Ross, Xiaoting Wang
Different ways of modelling quantum control systems, formulating control problems and solving the resulting problems are considered and compared. In particular, we compare the perf…