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Lackadaisical quantum walk for spatial search
Pulak Ranjan Giri, Vladimir Korepin
Lackadaisical quantum walk(LQW) has been an efficient technique in searching a target state from a database which is distributed on a two-dimensional lattice. We numerically study…
Non-Interacting Motzkin Chain - Periodic Boundary Conditions
Olof Salberger, Pramod Padmanabhan, Vladimir Korepin
The Motzkin spin chain is a spin-1 model introduced in \cite{shor} as an example of a system exhibiting a high degree of quantum fluctuations whose ground state can be mapped to Mo…
Renyi entropy of highly entangled spin chains
Fumihiko Sugino, Vladimir Korepin
Entanglement is one of the most intriguing features of quantum theory and a main resource in quantum information science. Ground states of quantum many-body systems with local inte…
Quantum Phase Transitions and Localization in Semigroup Fredkin Spin Chain
Pramod Padmanabhan, Fumihiko Sugino, Vladimir Korepin
We construct an extended quantum spin chain model by introducing new degrees of freedom to the Fredkin spin chain. The new degrees of freedom called arrow indices are partly associ…