Generating highly entangled states via discrete-time quantum walks with Parrondo sequences
arXiv:2008.00909 · doi:10.1016/j.physa.2022.128256
Abstract
Quantum entanglement has multiple applications in quantum information processing. Developing methods to generate highly entangled states independent of initial conditions is an essential task. Herein we aim to generate highly entangled states via discrete-time quantum walks. We propose deterministic Parrondo sequences that generate states that are generally much more entangled than states produced by sequences using only one of the two coins. We show that some Parrondo sequences generate highly entangled states, which are independent of the phase of the initial state used and further lead to maximally entangled states in some cases. We study Parrondo sequences for a small number of time steps and the asymptotic limit of a large number of time steps.
12 pages, 6 figures, accepted for publication in Physica A
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Cited by in corpus (11)
- Review on Quantum Walk Computing: Theory, Implementation, and Application
- Maximal coin-position entanglement generation in a quantum walk for the third step and beyond regardless of the initial state
- Parrondo's effect in continuous-time quantum walks
- Parrondo's paradox in quantum walks with inhomogeneous coins
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