Ball-grid array architecture for microfabricated ion traps

Abstract

State-of-the-art microfabricated ion traps for quantum information research are approaching nearly one hundred control electrodes. We report here on the development and testing of a new architecture for microfabricated ion traps, built around ball-grid array (BGA) connections, that is suitable for increasingly complex trap designs. In the BGA trap, through-substrate vias bring electrical signals from the back side of the trap die to the surface trap structure on the top side. Gold-ball bump bonds connect the back side of the trap die to an interposer for signal routing from the carrier. Trench capacitors fabricated into the trap die replace area-intensive surface or edge capacitors. Wirebonds in the BGA architecture are moved to the interposer. These last two features allow the trap die to be reduced to only the area required to produce trapping fields. The smaller trap dimensions allow tight focusing of an addressing laser beam for fast single-qubit rotations. Performance of the BGA trap as characterized with ${}^{40}$Ca${}^{+}$ ions is comparable to previous surface-electrode traps in terms of ion heating rate, mode frequency stability, and storage lifetime. We demonstrate two-qubit entanglement operations with ${}^{171}$Yb${}^{+}$ ions in a second BGA trap.

References in corpus (25)

• Entanglement and quantum computation with ions in thermal motion
• Heating of trapped ions from the quantum ground state
• Manipulation and Detection of a Trapped Yb+ Ion Hyperfine Qubit
• A microfabricated surface-electrode ion trap for scalable quantum information processing
• Ion-trap measurements of electric-field noise near surfaces
• Ion Trap in a Semiconductor Chip
• Optimal quantum control of multi-mode couplings between trapped ion qubits for scalable entanglement
• Scalable ion traps for quantum information processing
• Errors in trapped-ion quantum gates due to spontaneous photon scattering
• Ultrafast Gates for Single Atomic Qubits
• Entanglement of Atomic Qubits using an Optical Frequency Comb
• Trapped-ion probing of light-induced charging effects on dielectrics
• Fabrication and heating rate study of microscopic surface electrode ion traps
• Sympathetic ground state cooling and coherent manipulation with two-ion-crystals
• Reliable transport through a microfabricated X-junction surface-electrode ion trap
• Design, Fabrication, and Experimental Demonstration of Junction Surface Ion Traps
• Sideband cooling and coherent dynamics in a microchip multi-segmented ion trap
• Controlling trapping potentials and stray electric fields in a microfabricated ion trap through design and compensation
• Electrodynamically trapped Yb+ ions for quantum information processing
• Implementation of a symmetric surface electrode ion trap with field compensation using a modulated Raman effect
• Heating rate and electrode charging measurements in a scalable, microfabricated, surface-electrode ion trap
• Integration of fluorescence collection optics with a microfabricated surface electrode ion trap
• Beat note stabilization of mode-locked lasers for quantum information processing
• In-Vacuum Active Electronics for Microfabricated Ion Traps
• Modular cryostat for ion trapping with surface-electrode ion traps

Cited by in corpus (27)

• Trapped-Ion Quantum Computing: Progress and Challenges
• Ion-trap measurements of electric-field noise near surfaces
• Fifteen Years of Cold Matter on the Atom Chip: Promise, Realizations, and Prospects
• State Readout of a Trapped Ion Qubit Using a Trap-Integrated Superconducting Photon Detector
• Engineering of Microfabricated Ion Traps and Integration of Advanced On-Chip Features
• How to wire a 1000-qubit trapped ion quantum computer
• Designing a Million-Qubit Quantum Computer Using Resource Performance Simulator
• Operation of a planar-electrode ion-trap array with adjustable RF electrodes
• High-fidelity trapped-ion qubit operations with scalable photonic modulators
• Transport Implementation of the Bernstein-Vazirani Algorithm with Ion Qubits
• Scalable, high-fidelity all-electronic control of trapped-ion qubits
• Industrially Microfabricated Ion Trap with 1 eV Trap Depth
• Multilayer ion trap technology for scalable quantum computing and quantum simulation
• Ion trap architectures and new directions
• TSV-integrated Surface Electrode Ion Trap for Scalable Quantum Information Processing
• Single-ion microwave near-field quantum sensor
• Multilayer ion trap with three-dimensional microwave circuitry for scalable quantum logic applications
• Universal Control of Ion Qubits in a Scalable Microfabricated Planar Trap
• Coherent control for qubit state readout
• Optimization and implementation of a surface-electrode ion trap junction
• Modulating carrier and sideband coupling strengths in a standing wave gate beam
• Characterization of Fast Ion Transport via Position-Dependent Optical Deshelving
• Testing the Robustness of Robust Phase Estimation
• Fabrication of Surface Ion Traps with Integrated Current Carrying Wires enabling High Magnetic Field Gradients
• Modelling noise in global Molmer-Sorensen interactions applied to quantum approximate optimization
• Quench Dynamics of Two Coupled Ionic Zig-Zag Chains
• Isotope-selective Ion Trapping via Sympathetic Cooling using a Surface-Electrode Trap with a Hole for Collimated Atomic Loading