Perfect state transfer on a spin chain without state initialization.
We demonstrate that perfect state transfer can be achieved using an engineered spin chain and clean local end-chain operations, without requiring the initialization of the state of the medium nor fine-tuning of control pulses. This considerably relaxes the prerequisites for obtaining reliable transfer of quantum information across interacting-spin systems. Moreover, it allows us to shed light on the interplay among purity, entanglement, and operations on a class of many-body systems potentially useful for quantum information processing tasks.
Di Franco
C
C
School of Mathematics and Physics, Queen's University, Belfast BT7 1NN, United Kingdom.
Paternostro
M
M
Kim
M S
MS