Controlling two-dimensional Coulomb crystals of more than 100 ions in a monolithic radio-frequency trap

Abstract

Linear strings of trapped atomic ions held in radio-frequency (rf) traps constitute one of the leading platforms for quantum simulation experiments, allowing for the investigation of interacting quantum matter. However, linear ion strings have drawbacks, such as the difficulty to scale beyond $\sim 50$ particles as well as the inability to naturally implement spin models with more than one spatial dimension. Here, we present experiments with planar Coulomb crystals of about 100 ${}^{40}$Ca${}^{+}$ ions in a novel monolithic rf trap, laying the groundwork for quantum simulations of two-dimensional spin models with single-particle control. We characterize the trapping potential by analysis of crystal images and compare the observed crystal configurations with numerical simulations. We further demonstrate stable confinement of large crystals, free of structural configuration changes, and find that rf heating of the crystal is not an obstacle for future quantum simulation experiments. Finally, we prepare the out-of-plane motional modes of planar crystals consisting of up to 105 ions close to their ground state by electromagnetically-induced transparency cooling, an important prerequisite for implementing long-range entangling interactions.

References in corpus (40)

• Quantum Computing in the NISQ era and beyond
• The theory of variational hybrid quantum-classical algorithms
• Integrated Photonic Quantum Technologies
• Many-Body Physics with Individually-Controlled Rydberg Atoms
• Observation of a Many-Body Dynamical Phase Transition with a 53-Qubit Quantum Simulator
• Effective quantum spin systems with ion traps
• Programmable Quantum Simulations of Spin Systems with Trapped Ions
• Hartree-Fock on a superconducting qubit quantum computer
• An ${}^{27}$Al${}^{+}$ quantum-logic clock with systematic uncertainty below $10^{-18}$
• Self-Verifying Variational Quantum Simulation of the Lattice Schwinger Model
• Quantum spin dynamics and entanglement generation with hundreds of trapped ions
• Ion-trap measurements of electric-field noise near surfaces
• A compact ion-trap quantum computing demonstrator
• Demonstration of fault-tolerant universal quantum gate operations
• Ground state laser cooling using electromagnetically induced transparency
• Experimental demonstration of ground state laser cooling with electromagnetically induced transparency
• Optimal metrology with programmable quantum sensors
• Parallel Entangling Operations on a Universal Ion Trap Quantum Computer
• Structural phase transitions in low-dimensional ion crystals
• EIT ground-state cooling of long ion strings
• Colloquium: Trapped ions as quantum bits -- essential numerical tools
• Observing emergent hydrodynamics in a long-range quantum magnet
• Zero-Point cooling and low heating of trapped 111Cd+ ions
• Normal modes of trapped ions in the presence of anharmonic trap potentials
• Formation of robust bound states of interacting microwave photons
• Two-dimensional ion trap lattice on a microchip
• Near ground-state cooling of two-dimensional trapped-ion crystals with more than 100 ions
• On the application of radio frequency voltages to ion traps via helical resonators
• Modes of Oscillation in Radiofrequency Paul Traps
• Precise Experimental Investigation of Eigenmodes in a Planar Ion Crystal
• Electric-field noise from thermally-activated fluctuators in a surface ion trap
• Double-EIT Ground-State Cooling of Stationary Two-Dimensional Ion Lattices
• Controlling long ion strings for quantum simulation and precision measurements
• Two-dimensional linear trap array for quantum information processing
• Segmented ion-trap fabrication using high precision stacked wafers
• Coherent rotations of qubits within a multi-species ion-trap quantum computer
• The Panopticon device: an integrated Paul-trap-hemispherical mirror system for quantum optics
• Distance scaling and polarization of electric-field noise in a surface ion trap
• A Paul Trap with Sectored Ring Electrodes for Experiments with Two-Dimensional Ion Crystals
• RF-induced heating dynamics of non-crystallized trapped ions

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• Individually Addressed Entangling Gates in a Two-Dimensional Ion Crystal
• Realization of programmable Ising models in a trapped-ion quantum simulator
• Bilayer crystals of trapped ions for quantum information processing
• Hamiltonian and Liouvillian learning in weakly-dissipative quantum many-body systems
• Individual-Ion Addressing and Readout in a Penning Trap
• Individual Addressing and State Readout of Trapped Ions Utilizing Radio-Frequency Micromotion
• Sideband thermometry of ion crystals
• Interaction graph engineering in trapped-ion quantum simulators with global drives
• Efficient site-resolved imaging and spin-state detection in dynamic two-dimensional ion crystals
• Coherent excitation transport through ring-shaped networks
• Trapped particle evolution driven by residual gas collisions
• Transverse Polarization Gradient Entangling Gates for Trapped-Ion Quantum Computation
• Rapid cooling of the in-plane motion of two-dimensional ion crystals in a Penning trap to millikelvin temperatures
• Optimized surface ion trap design for tight confinement and separation of ion chains
• Dark spin-cats as biased qubits
• Adiabatic Cooling of Planar Motion in a Penning Trap Ion Crystal to Sub-Millikelvin Temperatures
• Parametric Amplification of Spin-Motion Coupling in Three-Dimensional Trapped-Ion Crystals