We consider a system consisting of two interacting qubits that are individually coupled to
separate heat baths at different temperatures. The quantum effects in heat transport are …

We report the laser cooling of a single Ca 40+ ion in a Penning trap to the motional ground
state in one dimension. Cooling is performed in the strong binding limit on the 729-nm …

Using a laser polarization gradient, we realize 3D Sisyphus cooling of Yb+ 171 ions
confined in and near the Lamb-Dicke regime in a linear Paul trap. The cooling rate and final …

Phase transitions have been a research focus in many-body physics over past decades.
Cold ions, under strong Coulomb repulsion, provide a repealing paradigm of exploring …

Trapped ion in the Lamb–Dicke (LD) regime with the LD parameter η≪ 1 can be cooled
down to its motional ground state using sideband cooling. Standard sideband cooling works …

We study heat rectification in a minimalistic model composed of two unequal atoms
subjected to linear forces and in contact with effective Langevin baths induced by Doppler …

The thermodynamics of low-dimensional systems departs significantly from
phenomenologically deducted macroscopic laws. Particular examples, not yet fully …

We study the nonequilibrium dynamics of the linear-to-zigzag structural phase transition
exhibited by an ion chain confined in a trap with periodic boundary conditions. The transition …

In one dimensional systems, it is possible to create periodic structures in phase space
through driving, which is called phase space crystals (Guo et al 2013 Phys. Rev. Lett. 111 …

Light-induced control of ions within small Coulomb crystals is investigated. By intense
intracavity optical standing-wave fields, subwavelength localization of individual ions is …