Systematic study of tunable laser cooling for trapped-ion experiments

Abstract

We report on a comparative analysis of quenched sideband cooling in trapped ions. We introduce a theoretical approach for time-efficient simulation of the temporal cooling characteristics and derive the optimal conditions providing fast laser cooling into the ion's motional ground state. The simulations were experimentally benchmarked with a single ${}^{172}$Yb${}^{+}$ ion confined in a linear Paul trap. Sideband cooling was carried out on a narrow quadrupole transition, enhanced with an additional clear-out laser for controlling the effective linewidth of the cooling transition. Quench cooling was thus for the first time studied in the resolved sideband, intermediate and semi-classical regime. We discuss the non-thermal distribution of Fock states during laser cooling and reveal its impact on time dilation shifts in optical atomic clocks.

arXiv comment20 pages, 10 figures

References in corpus (27)

• Programmable Quantum Simulations of Spin Systems with Trapped Ions
• An ${}^{27}$Al${}^{+}$ quantum-logic clock with systematic uncertainty below $10^{-18}$
• Single-Ion Atomic Clock with $3\times 10^{-18}$ Systematic Uncertainty
• Observation of the Kibble-Zurek scaling law for defect formation in ion crystals
• Ground state laser cooling using electromagnetically induced transparency
• Experimental demonstration of ground state laser cooling with electromagnetically induced transparency
• Quantum information scrambling in a trapped-ion quantum simulator with tunable range interactions
• Doppler cooling and trapping on forbidden transitions
• Trapping of Topological-Structural Defects in Coulomb Crystals
• Sympathetic ground state cooling and time-dilation shifts in an ${}^{27}{\text{Al}}^{+}$ optical clock
• Fluorescence during Doppler cooling of a single trapped atom
• Linear Paul trap design for an optical clock with Coulomb crystals
• Spontaneous nucleation and dynamics of kink defects in zigzag arrays of trapped ions
• Efficient ground-state cooling of large trapped-ion chains with an EIT tripod scheme
• Controlling systematic frequency uncertainties at the $10^{-19}$ level in linear Coulomb crystals
• Polarization-gradient cooling of 1D and 2D ion Coulomb crystals
• Double-EIT Ground-State Cooling of Stationary Two-Dimensional Ion Lattices
• 3D Sisyphus Cooling of Trapped Ions
• Probing Time Dilation in Coulomb Crystals in a high-precision Ion Trap
• Doppler cooling of calcium ions using a dipole-forbidden transition
• Efficient sideband cooling protocol for long trapped-ion chains
• Finite temperature spectrum at the symmetry-breaking linear-zigzag transition
• Optimized pulsed sideband cooling and enhanced thermometry of trapped ions
• Cooling atomic ions with visible and infra-red light
• Fast Cooling of Trapped Ion in Strong Sideband Coupling Regime
• Dissipative light field as a way to create strongly localized structures for atom lithography
• Two-step Doppler cooling of a three-level ladder system with an intermediate metastable level

Cited by in corpus (4)

• ${}^{115}$In${}^{+}$-${}^{172}$Yb${}^{+}$ Coulomb crystal clock with $2.5\times 10^{-18}$ systematic uncertainty
• Sideband thermometry of ion crystals
• Trapped-ion laser cooling in structured light fields
• High-accuracy multi-ion spectroscopy with mixed-species Coulomb crystals