Perfect Quantum Routing in Regular Spin Networks
arXiv:1007.2786 · doi:10.1103/PhysRevLett.106.020503
Abstract
Regular families of coupled quantum networks are described such the unknown state of a qubit can be perfectly routed from any node to any other node in a time linear in the distance. Unlike previous constructions, the transfer can be achieved perfectly on a network that is local on any specified number of spatial dimensions. The ability to route the state, and the regularity of the networks, vastly improve the utility of this scheme in comparison to perfect state transfer schemes. The structures can also be used for entanglement generation.
4 pages, 3 figures
References in corpus (13)
- Perfect Transfer of Arbitrary States in Quantum Spin Networks
- Quantum Communication through Spin Chain Dynamics: an Introductory Overview
- Spin Chains as Perfect Quantum State Mirrors
- Perfect state transfer on a spin-chain without state initialization
- Perfect State Transfer: Beyond Nearest-Neighbor Couplings
- Quantum Speed Limit for Perfect State Transfer in One Dimension
- Electron wavepacket propagation and entanglement in a chain of coupled quantum dots
- Quantum Networks on Cubelike Graphs
- State Transfer and Spin Measurement
- Geometric Effects and Computation in Spin Networks
- Control-limited perfect state transfer, quantum stochastic resonance and many-body entangling gate in imperfect qubit registers
- The Non-Equilibrium Reliability of Quantum Memories
- Interfacing with Hamiltonian Dynamics