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Fault-tolerant breathing pattern in optical lattices as a dynamical quantum memory
- Source :
- Physical Review A 89, 042326 (2014)
- Publication Year :
- 2014
-
Abstract
- Proposals for quantum information processing often require the development of new quantum tech- nologies. 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.
- Subjects :
- Quantum Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Physical Review A 89, 042326 (2014)
- Publication Type :
- Report
- Accession number :
- edsarx.1407.0596
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevA.89.042326