Where Condensed
Matter
Meets Computational
Frontiers
Research
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1
Exotic quantum phases on digital quantum computers
Quantum computers are emerging not only as computational tools but also as experimental platforms for creating novel nonequilibrium quantum phases. In this study, we implement and investigate such nonequilibrium phenomena using quantum circuits, demonstrating the potential of NISQ-era quantum devices as a platform for exploring new quantum phases.
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2
Spin Seebeck Effect of Triangular Lattice Spin Supersolid
The spin Seebeck effect provides a powerful method for probing spin transport by generating a spin current in response to a temperature gradient. In this study, we investigate the spin Seebeck effect in a triangular-lattice quantum antiferromagnet using a finite-temperature tensor-network algorithm.
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3
Time-dependent rovibronic wave functions of molecules
We simulate the time-dependent rotational, vibrational, and electronic dynamics of H2+ in an intense laser pulse using a multiconfiguration theory. The results agree well with a reference close-coupling simulation and open the possibility of time-dependent rovibronic simulations of other, larger molecules.
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4
Analysis of quantum criticality via sine-square deformation
The sine-square deformation (SSD) is a technique that spatially modulates the energy scale of the Hamiltonian in systems with open boundaries, thereby approximately realizing states corresponding to periodic boundary conditions. In this study, we exploit the properties of SSD to propose a new and efficient method for analyzing critical phenomena in quantum phase transitions.
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5
Thermal State Emerging in a Subsystem of a Pure Ground State
In this study, we partition the ground state of the Heisenberg model into subsystems according to a specific scheme and numerically analyze the effects of quantum entanglement on a subsystem. We find that the subsystem state can be well described by a thermal state at an effective temperature determined by the strength of entanglement.
Publications