3 research outputs found
Quantum information transmission through a qubit chain with quasi-local dissipation
We study quantum information transmission in a Heisenberg-XY chain where
qubits are affected by quasi-local environment action and compare it with the
case of local action of the environment. We find that for open boundary
conditions the former situation always improves quantum state transfer process,
especially for short chains. In contrast, for closed boundary conditions
quasi-local environment results advantageous in the strong noise regime. When
the noise strength is comparable with the XY interaction strength, the state
transfer fidelity through chain of odd/even number of qubits in presence of
quasi-local environment results smaller/greater than that in presence of local
environment