TY - JOUR
T1 - Perfect, Efficient, State Transfer and its Application as a Constructive Tool
AU - Kay, Alastair
N1 - 18 pages, 6 figures. Although mainly a review, this does contain some minor new results. v2: minor improvements. v3: journal version (to appear in Int. J. Quant. Inform.)
PY - 2010/6
Y1 - 2010/6
N2 - We review the subject of perfect state transfer; how one designs the (fixed) interactions of a chain of spins so that a quantum state, initially inserted on one end of the chain, is perfectly transferred to the opposite end in a fixed time. The perfect state transfer systems are then used as a constructive tool to design Hamiltonian implementations of other primitive protocols such as entanglement generation and signal amplification in measurements, before showing that, in fact, universal quantum computation can be implemented in this way.
AB - We review the subject of perfect state transfer; how one designs the (fixed) interactions of a chain of spins so that a quantum state, initially inserted on one end of the chain, is perfectly transferred to the opposite end in a fixed time. The perfect state transfer systems are then used as a constructive tool to design Hamiltonian implementations of other primitive protocols such as entanglement generation and signal amplification in measurements, before showing that, in fact, universal quantum computation can be implemented in this way.
KW - quant-ph
U2 - 10.1142/S0219749910006514
DO - 10.1142/S0219749910006514
M3 - Article
VL - 8
SP - 641
EP - 676
JO - Int. J. Quantum Inf.
JF - Int. J. Quantum Inf.
ER -