Robust quantum state transfer in random unpolarized spin chains
We propose and analyze a new approach for quantum state transfer between remote spin
qubits. Specifically, we demonstrate that coherent quantum coupling between remote qubits …
qubits. Specifically, we demonstrate that coherent quantum coupling between remote qubits …
Communication at the quantum speed limit along a spin chain
M Murphy, S Montangero, V Giovannetti… - Physical Review A—Atomic …, 2010 - APS
Spin chains have long been considered as candidates for quantum channels to facilitate
quantum communication. We consider the transfer of a single excitation along a spin-1/2 …
quantum communication. We consider the transfer of a single excitation along a spin-1/2 …
Ergodic and mixing quantum channels in finite dimensions
The paper provides a systematic characterization of quantum ergodic and mixing channels
in finite dimensions and a discussion of their structural properties. In particular, we discuss …
in finite dimensions and a discussion of their structural properties. In particular, we discuss …
Simulations of information transport in spin chains
Transport of quantum information in linear spin chains has been the subject of much
theoretical work. Experimental studies by NMR in solid state spin systems (a natural …
theoretical work. Experimental studies by NMR in solid state spin systems (a natural …
Scalable quantum computation via local control of only two qubits
We apply quantum control techniques to a long spin chain by acting only on two qubits at
one of its ends, thereby implementing universal quantum computation by a combination of …
one of its ends, thereby implementing universal quantum computation by a combination of …
Local controllability of quantum networks
We give a sufficient criterion that guarantees that a many-body quantum system can be
controlled by properly manipulating the (local) Hamiltonian of one of its subsystems. The …
controlled by properly manipulating the (local) Hamiltonian of one of its subsystems. The …
Spin chains for robust state transfer: Modified boundary couplings versus completely engineered chains
Quantum state transfer in the presence of static disorder and noise is one of the main
challenges in building quantum computers. We compare the quantum state transfer …
challenges in building quantum computers. We compare the quantum state transfer …
Dynamics and control of a quasi-one-dimensional spin system
We study experimentally a system comprised of linear chains of spin-1/2 nuclei that provides
a test bed for multibody dynamics and quantum-information processing. This system is a …
a test bed for multibody dynamics and quantum-information processing. This system is a …
Coherent-state transfer via highly mixed quantum spin chains
Spin chains have been proposed as quantum wires in many quantum-information
processing architectures. Coherent transmission of quantum information in spin chains over …
processing architectures. Coherent transmission of quantum information in spin chains over …
Supersonic quantum communication
When locally exciting a quantum lattice model, the excitation will propagate through the
lattice. This effect is responsible for a wealth of nonequilibrium phenomena, and has been …
lattice. This effect is responsible for a wealth of nonequilibrium phenomena, and has been …