Wave packet transmission of Bloch electron manipulated by magnetic field

Abstract

We study the phenomenon of wave packet revivals of Bloch electrons and explore how to control them by a magnetic field for quantum information transfer. It is showed that the single electron system can be modulated into a linear dispersion regime by the "quantized" flux and then an electronic wave packet with the components localized in this regime can be transferred without spreading. This feature can be utilized to perform the high-fidelity transfer of quantum information encoded in the polarization of the spin. Beyond the linear approximation, the re-localization and self-interference occur as the novel phenomena of quantum coherence.

6 pages, 5 figures, new content added

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• Quantum state transfer and time-dependent disorder in Quantum Chains
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• Non-Hermitian interferometer: Unidirectional amplification without distortion
• Fractional revivals of quantum state in tight-binding chain
• Generation of GHZ and W states for stationary qubits in spin network via resonance scattering
• Beam Splitter for Spin Waves in Quantum Spin Network
• Rigorous results for tight-binding networks: particle trapping and scattering
• Controlling soliton excitations in Heisenberg spin chain through magic angle
• Quantum state swapping via qubit network with Hubbard interaction
• Dynamics of one-dimensional tight-binding models with arbitrary time-dependent external homogeneous fields
• Electromagnetic manipulation for anti-Zeno effect in an engineered quantum tunneling process
• Quantum dynamics of magnetically controlled network for Bloch electrons
• Dynamic generation of entangling wave packets in XY spin system with decaying long range couplings
• Amplitude control of a quantum state in a non-Hermitian Rice-Mele model driven by an external field
• Achievable Qubit Rates for Quantum Information Wires
• Dynamics of a tight-binding ring threaded by time-periodic magnetic flux
• Coherently manipulating flying qubits in a quantum wire with a magnetic impurity