539 citations · 729 across the 5 of their papers we have counts for
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Perfect State Transfer: Beyond Nearest-Neighbor Couplings
Alastair Kay
In this paper we build on the ideas presented in previous works for perfectly transferring a quantum state between opposite ends of a spin chain using a fixed Hamiltonian. While al…
Error Correcting the Control Unit in Global Control Schemes
Alastair Kay
Recent studies of globally controlled structures have culminated in a theoretical demonstration that fault-tolerant quantum computation can be carried out on a one--dimensional cha…
Geometric Effects and Computation in Spin Networks
Alastair Kay, Marie Ericsson
When initially introduced, a Hamiltonian that realises perfect transfer of a quantum state was found to be analogous to an x-rotation of a large spin. In this paper we extend the a…
Perfect Transfer of Arbitrary States in Quantum Spin Networks
Matthias Christandl, Nilanjana Datta, Tony C. Dorlas +3
We propose a class of qubit networks that admit perfect state transfer of any two-dimensional quantum state in a fixed period of time. We further show that such networks can distri…
Quantum error correction in globally controlled arrays
Adel Bririd, Simon C. Benjamin, Alastair Kay
An interesting concept in quantum computation is that of global control (GC), where there is no need to manipulate qubits individually. One can implement a universal set of quantum…