From the 1 of 8 linked papers with an AI index.
8 papers
Magnetic-field control of interactions in alkaline-earth Rydberg atoms and applications to {\it XXZ} models
Masaya Kunimi, Takafumi Tomita
The paper analyzes how magnetic fields modify the interactions between alkaline‑earth Rydberg atoms (Sr and Yb), showing that the resulting effective Hamiltonian is an XXZ spin mod…
Discontinuous strong-to-weak symmetry breaking transition from thermal pure states
Taiki Haga, Masaya Kunimi, Masaya Nakagawa
We investigate the nonequilibrium dynamics of strong-to-weak spontaneous symmetry breaking in many-body quantum systems undergoing decoherence from thermal pure states. For generic…
Shapiro steps of superfluid Fermi gases in a ring trap across the BCS--BEC crossover
Hikaru Kuriki, Masaya Kunimi, Tetsuro Nikuni
We investigate the transport properties of a superfluid Fermi gas confined in a ring trap with a moving potential barrier across the Bardeen-Cooper-Schrieffer (BCS) to Bose-Einstei…
Construction of asymptotic quantum many-body scar states in the SU() Hubbard model
Daiki Hashimoto, Masaya Kunimi, Tetsuro Nikuni
We construct asymptotic quantum many-body scars (AQMBS) in one-dimensional SU() Hubbard chains () by embedding the scar subspace into an auxiliary Hilbert subspace $\ma…
Performance Comparison of QAOA Mixers for Ternary Portfolio Optimization
Shintaro Yamamura, Satoshi Watanabe, Masaya Kunimi +2
The Quantum Approximate Optimization Algorithm (QAOA) is a quantum algorithm proposed for Noisy Intermediate-Scale Quantum (NISQ) devices and is regarded as a promising approach to…
Proposal for realizing Heisenberg-type quantum-spin models in Rydberg-atom quantum simulators
Masaya Kunimi, Takafumi Tomita
We investigate the magnetic-field dependence of the interaction between two Rydberg atoms, and . In this setting, the effective s…