INVESTIGADORES
ZWICK Analia Elizabeth
artículos
Título:
Optimized dynamical control of state transfer through noisy spin chains
Autor/es:
ANALIA ZWICK; GUY BENSKY; GONZALO A. ALVAREZ; GERSHON KURIZKI
Revista:
NEW JOURNAL OF PHYSICS
Editorial:
IOP PUBLISHING LTD
Referencias:
Lugar: Londres; Año: 2014 vol. 16 p. 65021 - 65040
ISSN:
1367-2630
Resumen:
We propose a method of optimally controlling the tradeoff of speed and fidelity of state transfer through a noisy quantum channel (spin-chain). This process is treated as qubit state-transfer through a fermionic bath. We show that dynamical modulation of the boundary-qubits levels can ensure state transfer with the best tradeoff of speed and fidelity. This is achievable by dynamically optimizing the transmission spectrum of the channel. The resulting optimal control is robust against both static and fluctuating noise in the channel's spin-spin couplings. It may also facilitate transfer in the presence of diagonal disorder (on site energy noise) in the channel.