Near ground-state cooling of two-dimensional trapped-ion crystals with more than 100 ions

Abstract

We study, both experimentally and theoretically, electromagnetically induced transparency cooling of the drumhead modes of planar 2-dimensional arrays with up to $N\approx 190$ Be${}^{+}$ ions stored in a Penning trap. Substantial sub-Doppler cooling is observed for all $N$ drumhead modes. Quantitative measurements for the center-of-mass mode show near ground state cooling with motional quantum numbers of $\bar{n}=0.3\pm 0.2$ obtained within $200\mu s$. The measured cooling rate is faster than that predicted by single particle theory, consistent with a quantum many-body calculation. For the lower frequency drumhead modes, quantitative temperature measurements are limited by apparent damping and frequency instabilities, but near ground state cooling of the full bandwidth is strongly suggested. This advancement will greatly improve the performance of large trapped ion crystals in quantum information and quantum metrology applications.

arXiv comment9 pages, 5 figures, includes appendix

References in corpus (22)

• QuTiP 2: A Python framework for the dynamics of open quantum systems
• Laser cooling of a nanomechanical oscillator into its quantum ground state
• QuTiP: An open-source Python framework for the dynamics of open quantum systems
• Sideband Cooling Micromechanical Motion to the Quantum Ground State
• Engineered 2D Ising interactions on a trapped-ion quantum simulator with hundreds of spins
• Measuring out-of-time-order correlations and multiple quantum spectra in a trapped ion quantum magnet
• Quantum spin dynamics and entanglement generation with hundreds of trapped ions
• Ground state laser cooling using electromagnetically induced transparency
• Cooling the Collective Motion of Trapped Ions to Initialize a Quantum Register
• Experimental demonstration of ground state laser cooling with electromagnetically induced transparency
• EIT ground-state cooling of long ion strings
• Cooling atomic motion with quantum interference
• Sympathetic EIT laser cooling of motional modes in an ion chain
• Ground state cooling of a nanomechanical resonator in the weak-confinement regime via quantum interference
• Amplitude sensing below the zero-point fluctuations with a two-dimensional trapped-ion mechanical oscillator
• Spectroscopy and Thermometry of Drumhead Modes in a Mesoscopic Trapped-Ion Crystal using Entanglement
• Simulating generic spin-boson models with matrix product states
• Phonon mediated quantum spin simulator employing a planar ionic crystal in a Penning trap
• Spin Dephasing as a Probe of Mode Temperature, Motional State Distributions, and Heating Rates in a 2D Ion Crystal
• Sideband cooling of small ion Coulomb crystals in a Penning trap
• Perpendicular laser cooling with a rotating wall potential in a Penning trap
• Modeling near ground-state cooling of two-dimensional ion crystals in a Penning trap using electromagnetically induced transparency

Cited by in corpus (53)

• Demonstration of the trapped-ion quantum-CCD computer architecture
• Long-range interacting quantum systems
• Quantum-enhanced sensing of displacements and electric fields with large trapped-ion crystals
• Efficient ground-state cooling of large trapped-ion chains with an EIT tripod scheme
• Controlling two-dimensional Coulomb crystals of more than 100 ions in a monolithic radio-frequency trap
• Polarization-gradient cooling of 1D and 2D ion Coulomb crystals
• Floquet-engineered vibrational dynamics in a two-dimensional array of trapped ions
• Double-EIT Ground-State Cooling of Stationary Two-Dimensional Ion Lattices
• Quantum computation and simulation with vibrational modes of trapped ions
• Controlling long ion strings for quantum simulation and precision measurements
• Trapped electrons and ions as particle detectors
• Robust optical clock transitions in trapped ions
• Phase-coherent sensing of the center-of-mass motion of trapped-ion crystals
• Efficient sideband cooling protocol for long trapped-ion chains
• Towards Improved Quantum Simulations and Sensing with Trapped 2D Ion Crystals via Parametric Amplification
• Sideband cooling of the radial modes of motion of a single ion in a Penning trap
• Engineering generalized Gibbs ensembles with trapped ions
• Finite temperature spectrum at the symmetry-breaking linear-zigzag transition
• Broadening of the drumhead mode spectrum due to in-plane thermal fluctuations of two-dimensional trapped ion crystals in a Penning trap
• Site-resolved imaging of beryllium ion crystals in a high-optical-access Penning trap with inbore optomechanics
• Two-tone Doppler cooling of radial two-dimensional crystals in a radiofrequency ion trap
• Fast Cooling of Trapped Ion in Strong Sideband Coupling Regime
• Modeling near ground-state cooling of two-dimensional ion crystals in a Penning trap using electromagnetically induced transparency
• Doppler Cooled Ions in a Compact, Reconfigurable Penning Trap
• Electromagnetically-Induced-Transparency Cooling of High-Nuclear-Spin Ions
• 139 GHz UV phase-locked Raman laser system for thermometry and sideband cooling of ${}^9$Be${}^{+}$ ions in a Penning trap
• Entangling gates for trapped-ion quantum computation and quantum simulation
• Ultra-fast two-qubit ion gate using sequences of resonant pulses
• First principle simulation of ultra-cold ion crystals in a Penning trap with Doppler cooling and a rotating wall potential
• Bilayer crystals of trapped ions for quantum information processing
• Individual-Ion Addressing and Readout in a Penning Trap
• Quantum proportional-integral (PI) control
• Dark-state sideband cooling in an atomic ensemble
• Superior dark-state cooling via nonreciprocal couplings in trapped atoms
• Optical stimulated-Raman sideband spectroscopy of a single ${}^9$Be${}^{+}$ ion in a Penning trap
• Enhanced dark-state sideband cooling in trapped atoms via photon-mediated dipole-dipole interactions
• Equilibration of the planar modes of ultracold two dimensional ion crystals in a Penning trap
• Steady state phonon occupation of EIT cooling: higher order calculations
• Sideband thermometry of ion crystals
• Evaporative cooling to a Rydberg crystal close to its ground state
• Efficient site-resolved imaging and spin-state detection in dynamic two-dimensional ion crystals
• Chiral-coupling-assisted refrigeration in trapped ions
• Rapid cooling of the in-plane motion of two-dimensional ion crystals in a Penning trap to millikelvin temperatures
• Trap-integrated fluorescence detection based on silicon photomultipliers in a cryogenic Penning trap
• In-situ-tunable spin-spin interactions in a Penning trap with in-bore optomechanics
• A high-power spectral beamsplitter for closely spaced frequencies
• Observing the dynamics of octupolar structural transitions in trapped-ion clusters
• Numerical Simulations of 3D Ion Crystal Dynamics in a Penning Trap using the Fast Multipole Method
• Quantum sensing of high-frequency gravitational waves with ion crystals
• Formation of Two-Ion Crystals by Injection from a Paul-Trap Source into a High-Magnetic-Field Penning Trap
• Multilevel Electromagnetically Induced Transparency Cooling
• Efficient Three-Dimensional Sub-Doppler Cooling of ${}^{40}$Ca${}^{+}$ in a Penning Trap
• An open-endcap blade trap for radial-2D ion crystals