Mixed-state quantum transport in correlated spin networks

Details Mixed-state quantum transport in correlated spin networks Mixed-state quantum transport in correlated spin networks

2012-04-05

arxiv.org/abs/1204.1363v1

PRA 85, 042305 (2012)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevA.85.042305

Quantum spin networks can be used to transport information between separated registers in a quantum information processor. To find a practical implementation, the strict requirements of ideal models for perfect state transfer need to be relaxed, allowing for complex coupling topologies and general initial states. Here we analyze transport in complex quantum spin networks in the maximally mixed state and derive explicit conditions that should be satisfied by propagators for perfect state transport. Using a description of the transport process as a quantum walk over the network, we show that it is necessary to phase correlate the transport processes occurring along all the possible paths in the network. We provide a Hamiltonian that achieves this correlation, and use it in a constructive method to derive engineered couplings for perfect transport in complicated network topologies.

Affiliated with

Also associated with

No associations

Rating

Mixed-state quantum transport in correlated spin networks does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Mixed-state quantum transport in correlated spin networks, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mixed-state quantum transport in correlated spin networks will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-182897