73 citations · 196 across the 6 of their papers we have counts for
6 papers
Surface-electrode trap with an integrated permanent magnet for generating a magnetic-field gradient at trapped ions
Yuji Kawai, Kenji Shimizu, Atsushi Noguchi +2
We report on a surface-electrode trap with SmCo magnets arranged in a quadrupole configuration underneath the trap electrode. Because the distance between the magnets and the trapp…
Aharonov-Bohm effect in the tunnelling of a quantum rotor in a linear Paul trap
Atshushi Noguchi, Yutaka Shikano, Kenji Toyoda +1
Quantum tunnelling is a common fundamental quantum-mechanical phenomenon that originates from the wave-like characteristics of quantum particles. Although the quantum-tunnelling ef…
Experimental realization of a quantum phase transition of polaritonic excitations
Kenji Toyoda, Yuta Matsuno, Atsushi Noguchi +2
We report an experimental realization of the Jaynes-Cummings-Hubbard (JCH) model using the internal and radial phonon states of two trapped ions. An adiabatic transfer correspondin…
Generation of Dicke States with Phonon-Mediated Multi-level Stimulated Raman Adiabatic Passage
Atsushi Noguchi, Kenji Toyoda, Shinji Urabe
We generate half-excited symmetric Dicke states of two and four ions. We use multi-level stimulated Raman adiabatic passage (STIRAP) whose intermediate states are phonon Fock state…
Generation of a spin-squeezed state with trapped ions using a dressing field
Atsushi Noguchi, Kenji Toyoda, Shinji Urabe
We propose a method for generating a spin-squeezed state that is a symmetric Dicke state, with trapped ions using only global access. The eigenstates of the ions under a strong dre…
Generation of a decoherence-free entangled state using a radio frequency dressed state
Atsushi Noguchi, Shinsuke Haze, Kenji Toyoda +1
We propose the generation of entangled states with trapped calcium ions using a combination of an rf dressed state and a spin dependent force. Using this method, a decoherence-free…