TY - JOUR
T1 - Fault-tolerant breathing pattern in optical lattices as a dynamical quantum memory
AU - Wang, Zhao Ming
AU - Wu, Lian Ao
AU - Modugno, Michele
AU - Byrd, Mark S.
AU - Yu, Ting
AU - You, J. Q.
PY - 2014/4/25
Y1 - 2014/4/25
N2 - Proposals for quantum information processing often require the development of new quantum technologies. However, here we build quantum memory by ultracold atoms in one-dimensional optical lattices with existing state-of-the-art technology. Under a parabolic external field, we demonstrate that an arbitrary initial state at an end of the optical lattices can time evolve and revive, with very high fidelity, at predictable discrete time intervals. Physically, the parabolic field can catalyze a breathing pattern. The initial state is "memorized" by the pattern and can be retrieved at any of the revival time moments. In comparison with usual time-independent memory, we call this a dynamical memory. Furthermore, we show that the high fidelity of the quantum state at revival time moments is fault tolerant against the fabrication defects and even time-dependent noise.
AB - Proposals for quantum information processing often require the development of new quantum technologies. However, here we build quantum memory by ultracold atoms in one-dimensional optical lattices with existing state-of-the-art technology. Under a parabolic external field, we demonstrate that an arbitrary initial state at an end of the optical lattices can time evolve and revive, with very high fidelity, at predictable discrete time intervals. Physically, the parabolic field can catalyze a breathing pattern. The initial state is "memorized" by the pattern and can be retrieved at any of the revival time moments. In comparison with usual time-independent memory, we call this a dynamical memory. Furthermore, we show that the high fidelity of the quantum state at revival time moments is fault tolerant against the fabrication defects and even time-dependent noise.
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U2 - 10.1103/PhysRevA.89.042326
DO - 10.1103/PhysRevA.89.042326
M3 - Article
AN - SCOPUS:84899557786
SN - 1050-2947
VL - 89
JO - Physical Review A - Atomic, Molecular, and Optical Physics
JF - Physical Review A - Atomic, Molecular, and Optical Physics
IS - 4
M1 - 042326
ER -