66 citations · 378 across the 21 of their papers we have counts for
5 papers · 1 filter
Group Theoretical Formulation of Quantum Partial Search Algorithm
Vladimir E. Korepin, Brenno C. Vallilo
Searching and sorting used as a subroutine in many important algorithms. Quantum algorithm can find a target item in a database faster than any classical algorithm. One can trade a…
Quantum Partial Search of a Database with Several Target Items
Byung-Soo Choi, Vladimir Korepin
We consider a database separated into blocks. Blocks containing target items are called target blocks. Blocks without target items are called non-target blocks. We consider a case,…
Analysis of entropy of XY Spin Chain
F. Franchini, A. R. Its, B. -Q. Jin +1
Entanglement in the ground state of the XY model on the infinite chain can be measured by the von Neumann entropy of a block of neighboring spins. We study a double scaling limit:…
Entropy of XY Spin Chain and Block Toeplitz Determinants
A. R. Its, B. -Q. Jin, V. E. Korepin
We consider entanglement in the ground state of the XY spin model on infinite chain. We use von Neumann entropy of a sub-system as a measure of entanglement. The entropy of a large…
Boundary effects to the entanglement entropy and two-site entanglement of the spin-1 valence-bond solid
Heng Fan, Vladimir Korepin, Vwani Roychowdhury +2
We investigate the von Neumann entropy of a block of subsystem for the valence-bond solid (VBS) state with general open boundary conditions. We show that the effect of the boundary…