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6 papers · 1 filter
An approach using geometric diagrams to generic Bell inequalities with multiple observables
Junghee Ryu, Jinhyoung Lee, Hoon Ryu
We extend the generic Bell inequalities suggested by Son, Lee, and Kim [Phys. Rev. Lett. 96, 060406 (2006)] to incorporate multiple observables for tripartite systems and introduce…
A variational quantum eigensolver tailored to multi-band tight-binding simulations of electronic structures
Dongkeun Lee, Hoon Ryu
We propose a cost-efficient measurement scheme of the variational quantum eigensolver (VQE) for atomistic simulations of electronic structures based on a tight-binding (TB) theory.…
A variational quantum algorithm for tackling multi-dimensional Poisson equations with inhomogeneous boundary conditions
Minjin Choi, Hoon Ryu
We design a variational quantum algorithm to solve multi-dimensional Poisson equations with mixed boundary conditions that are typically required in various fields of computational…
Field extension of real values of physical observables in classical theory can help attain quantum results
Hai Wang, Asutosh Kumar, Junde Wu +1
Physical quantities are assumed to take real values, which stems from the fact that an usual measuring instrument that measures a physical observable always yields a real number. H…
The geometry properties of parity and time reversal operators in two dimensional spaces
Minyi Huang, Yu Yang, Junde Wu +1
The parity operator and time reversal operator are two important operators in the quantum theory, in particular, in the -symmetric quantum theory. By usi…
The Local Orthogonality between Quantum States and Entanglement Decomposition
Sunho Kim, Junde Wu, Lin Zhang +1
In the paper, we show that when a quantum state can be decomposed as a convex combination of locally orthogonal mixed states, its entanglement can be decomposed into the entangleme…