82 citations · 112 across the 9 of their papers we have counts for
10 papers
Magnetically activated optical visibility of many-body excitons in NiPS
Shuta Matsuura, Shohei Imai, Naoto Tsuji
NiPS is a layered van der Waals magnet that provides a unique platform for exploring the interplay between excitons and magnetic order. In its antiferromagnetic phase, strong m…
Generating collective spin cat states via photon-number measurements near the Dicke critical point
Taiga Nakamoto, Shohei Imai, Kazuaki Takasan
We propose a method for generating collective spin cat states in a cavity-coupled atomic ensemble by exploiting strong light-matter entanglement and anti-squeezing associated with…
Heralded ultrafast generation of macroscopic quantum states in matter with bright squeezed vacuum light
Shohei Imai
We show that bright squeezed vacuum light, combined with a single-shot quadrature measurement of the post-interaction light, enables the ultrafast generation of macroscopic quantum…
Macroscopic Schrödinger-cat states of nonequilibrium electrons induced by cat-state optical driving and projective measurements on the light field
Shohei Imai
We show that projective measurements on quantum light can induce macroscopic cat states in many-electron systems driven by such light. Here we investigate the quantum dynamics of $…
Electron dynamics induced by quantum cat-state light
Shohei Imai, Atsushi Ono, Naoto Tsuji
We present an effective theory for describing electron dynamics driven by an optical external field in a Schrödinger's cat state. We show that the reduced electron density matrix e…
High harmonic generation from electrons moving in topological spin textures
Atsushi Ono, Shun Okumura, Shohei Imai +1
High harmonic generation (HHG) is a striking phenomenon, which reflects the ultrafast dynamics of electrons. Recently, it has been demonstrated that HHG can be used to reconstruct…
Quantum many-body scars with unconventional superconducting pairing symmetries via multibody interactions
Shohei Imai, Naoto Tsuji
We present a systematic framework to construct model Hamiltonians that have unconventional superconducting pairing states as exact energy eigenstates, by incorporating multibody in…
Theory for Fourier-limited attosecond pulse generation in solids
Shohei Imai, Atsushi Ono
The generation of ultrashort light pulses is essential for the advancement of attosecond science. Here, we show that attosecond pulses approaching the Fourier limit can be generate…
Energy-band echoes: Time-reversed light emission from optically driven quasiparticle wavepackets
Shohei Imai, Atsushi Ono, Sumio Ishihara
The at-will control of quantum states is a primary goal of quantum science and technology. The celebrated Hahn echo exemplifies such quantum-state control based on a time-reversal…
High-Harmonic Generation in a Correlated Electron System
Shohei Imai, Atsushi Ono, Sumio Ishihara
High-harmonic generation (HHG) in crystalline solids have been examined so far on the basis of one-body energy-band structures arising from electron itineracy in a periodic potenti…