Heat transport through ion crystals

  title={Heat transport through ion crystals},
  author={Nahuel Freitas and Esteban A. Martinez and Juan Pablo Paz},
  journal={Physica Scripta},
We study the thermodynamical properties of crystals of trapped ions which are laser cooled to two different temperatures in two separate regions. We show that these properties strongly depend on the structure of the ion crystal. Such structure can be changed by varying the trap parameters and undergoes a series of phase transitions from linear to zig-zag or helicoidal configurations. Thus, we show that these systems are ideal candidates to observe and control the transition from anomalous to… 
Thermoelectricity of cold ions in optical lattices
We study analytically and numerically the thermoelectric properties of cold ions placed in an optical lattice. Our results show that the transition from sliding to pinned phase takes place at a
Spectroscopy and Directed Transport of Topological Solitons in Crystals of Trapped Ions.
It is found that the propagation and the escape of the soliton out of its quasi-one-dimensional channel can be described as a thermal activation mechanism and the global trapping potential permits controlling thesoliton dynamics and realizing directed transport depending on its topological charge.
Dynamics of Trapped Ions Near the Linear-Zigzag Structural Phase Transition
Laser-cooled ions held in a linear Paul trap with strong transverse confinement organize into a one-dimensional (1–D) linear crystal. If the transverse confinement is relaxed, the linear ion crystal
Thermoelectricity Modeling with Cold Dipole Atoms in Aubry Phase of Optical Lattice
We study analytically and numerically the thermoelectric properties of a chain of cold atoms with dipole-dipole interactions placed in an optical periodic potential. At small potential amplitudes the
Spatial configurations and temperature profiles in nonequilibrium steady state of two-species trapped ion systems.
The results evidence the spatial segregation of the two ion species due to the mass dependence of the trapping frequencies and the increase of ion delocalization for heavier ion species and/or weaker trapping confinements.
Thermal conduction in a harmonic chain coupled to two cavity-optomechanical systems
We propose a model including a one-dimensional harmonic chain of oscillators whose two ends coupled two cavity-optomechanical systems for studying one-dimensional thermal conductivity in statistical
Underlying mechanisms for normal heat transport in one-dimensional anharmonic oscillator systems with a double-well interparticle interaction
Previous studies have suggested a crossover from superdiffusive to normal heat transport in one-dimensional (1D) anharmonic oscillator systems with a double-well type interatomic interaction like
Controlling the potential landscape and normal modes of ion Coulomb crystals by a standing-wave optical potential
Light-induced control of ions within small Coulomb crystals is investigated. By intense intracavity optical standing wave fields, subwavelength localization of individual ions is achieved for one-,
Energy localization in an atomic chain with a topological soliton
Topological defects in low-dimensional non-linear systems feature a sliding-to-pinning transition of relevance for a variety of research fields, ranging from biophysics to nano- and solid-state
Quantum Correlations and Energy Transport in Trapped Ions
We present experimental results of using trapped ions for the study of energy transport and quantum correlations in many-body systems. We investigate energy propagation by locally exciting one end of


Controlling and measuring quantum transport of heat in trapped-ion crystals.
It is shown how to efficiently control and measure this current, including fluctuations, by coupling vibrons to internal ion states, which demonstrates that ion crystals provide an ideal platform for studying quantum transport, e.g., through thermal analogues of quantum wires and quantum dots.
Heat transport and phonon localization in mass-disordered harmonic crystals
We investigate the steady-state heat current in two- and three-dimensional disordered harmonic crystals in a slab geometry connected at the boundaries to stochastic white-noise heat baths at
Equilibration and temperature distribution in a driven ion chain
We study the non-equilibrium dynamics and equilibration in a dissipative quantum many-body system—a chain of ions with two points of the chain driven by a thermal bath under different temperatures.
Topological defect formation and spontaneous symmetry breaking in ion Coulomb crystals.
This work presents the successful creation of defects in ion Coulomb crystals by a controlled quench of the confining potential, and observes an enhanced power law scaling in accordance with numerical simulations and recent predictions.
Eigenmodes and thermodynamics of a Coulomb chain in a harmonic potential.
The results that are found analytically in the thermodynamic limit provide a good estimate of the spectrum of excitations of small chains down to few tens of ions.
Heat transport in low-dimensional systems
Recent results on theoretical studies of heat conduction in low-dimensional systems are presented. These studies are on simple, yet non-trivial, models. Most of these are classical systems, but some
Phase transitions in anisotropically confined ionic crystals.
  • Schiffer
  • Physics
    Physical review letters
  • 1993
Crystalline, confined ionic systems exhibit well defined phase transitions as a function of the anisotropy of the confining potential, which seems to be proportional to a power of the number of confined ions.
Thermal conduction in classical low-dimensional lattices
Trapped ions in optical lattices for probing oscillator chain models
We show that a chain of trapped ions embedded in microtraps generated by an optical lattice can be used to study oscillator models related to dry friction and energy transport. Numerical calculations
Suppression of heating rates in cryogenic surface-electrode ion traps.
Heating rates in cryogenically cooled surface-electrode traps, with characteristic sizes in the 75 to 150 mum range, are characterized, and the observed noise depends strongly on the fabrication process, which suggests further improvements are possible.