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5 papers · 2 filters
Parametrized quantum circuit for weight-adjustable quantum loop gas
Rong-Yang Sun, Tomonori Shirakawa, Seiji Yunoki
Motivated by the recent success of realizing the topologically ordered ground state of the exactly solvable toric code model by a quantum circuit on the real quantum device [K. J.…
Entanglement bipartitioning and tree tensor networks
Kouichi Okunishi, Hiroshi Ueda, Tomotoshi Nishino
We propose the entanglement bipartitioning approach to design an optimal network structure of the tree-tensor-network (TTN) for quantum many-body systems. Given an exact ground-sta…
Energy-filtered random-phase states as microcanonical thermal pure quantum states
Kazuhiro Seki, Seiji Yunoki
We propose a method to calculate finite-temperature properties of a quantum many-body system for a microcanonical ensemble by introducing a pure quantum state named here an energy-…
Remnants of the nonrelativistic Casimir effect on the lattice
Katsumasa Nakayama, Kei Suzuki
The Casimir effect is a fundamental quantum phenomenon induced by the zero-point energy for a quantum field. It is well-known for relativistic fields with a linear dispersion relat…
Gutzwiller wave function on a quantum computer using a discrete Hubbard-Stratonovich transformation
Kazuhiro Seki, Yuichi Otsuka, Seiji Yunoki
We propose a quantum-classical hybrid scheme for implementing the nonunitary Gutzwiller factor using a discrete Hubbard-Stratonovich transformation, which allows us to express the…