  In many quantum information processing applications, it is important to be
able to transfer a quantum state from one location to another - even within a
local device. Typical approaches to implement the quantum state transfer rely
on unitary evolutions or measurement feedforward operations. However, these
existing schemes require accurate pulse operations and/or precise timing
controls. Here, we propose a one-way transfer of the quantum state with near
unit efficiency using dissipation from a tailored environment. After preparing
an initial state, the transfer can be implemented without external time
dependent operations. Moreover, our scheme is irreversible due to the
non-unitary evolution, and so the transferred state remains in the same site
once the system reaches the steady state. This is in stark contrast to the
unitary state transfer where the quantum states continue to oscillate between
different sites. Our novel quantum state transfer via the dissipation paves the
way towards robust and practical quantum control.

Quantum Physics