Quantum Information Processing in Disordered and Complex Quantum Systems

Abstract

We investigate quantum information processing and manipulations in disordered systems of ultracold atoms and trapped ions. First, we demonstrate generation of entanglement and local realization of quantum gates in a quantum spin glass system. Entanglement in such systems attains significantly high values, after quenched averaging, and has a stable positive value for arbitrary times. Complex systems with long range interactions, such as ion chains or dipolar atomic gases, can be modeled by neural network Hamiltonians. In such systems, we find the characteristic time of persistence of quenched averaged entanglement, and also find the time of its revival.

4 pages, RevTeX4, 2 figures

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Cited by in corpus (7)

• Ultracold atomic gases in optical lattices: mimicking condensed matter physics and beyond
• Trapped ion chain as a neural network
• Trapped Ion Chain as a Neural Network: Error Resistant Quantum Computation
• Beating no-go theorems by engineering defects in quantum spin models
• Non-equilibrium phonon dynamics in trapped ion systems
• Entanglement of weighted graphs uncovers transitions in variable-range interacting models
• Initial-state randomness as a universal source of decoherence