Cryogenic ion trap system for high-fidelity near-field microwave-driven quantum logic

Abstract

We report the design, fabrication, and characterization of a cryogenic ion trap system for the implementation of quantum logic driven by near-field microwaves. The trap incorporates an on-chip microwave resonator with an electrode geometry designed to null the microwave field component that couples directly to the qubit, while giving a large field gradient for driving entangling logic gates. We map the microwave field using a single ${}^{43}$Ca${}^{+}$ ion, and measure the ion trapping lifetime and motional mode heating rates for one and two ions.

arXiv comment18 pages, 13 figures

References in corpus (50)

• Experimental issues in coherent quantum-state manipulation of trapped atomic ions
• Quantum computation with ions in thermal motion
• Multi-particle entanglement of hot trapped ions
• A Theory of Fault-Tolerant Quantum Computation
• Fault-tolerant quantum computation with high threshold in two dimensions
• Circuit cavity electromechanics in the strong coupling regime
• High-fidelity quantum logic gates using trapped-ion hyperfine qubits
• High-fidelity two-qubit quantum logic gates using trapped calcium-43 ions
• High-fidelity preparation, gates, memory and readout of a trapped-ion quantum bit
• High-Fidelity Universal Gate Set for ${}^9$Be${}^{+}$ Ion Qubits
• Ion-trap measurements of electric-field noise near surfaces
• Long-lived qubit memory using atomic ions
• Ion-trap quantum logic using long-wavelength radiation
• High-fidelity readout of trapped-ion qubits
• Microwave quantum logic gates for trapped ions
• Single-qubit quantum memory exceeding $10$-minute coherence time
• Scaling and Suppression of Anomalous Quantum Decoherence in Ion Traps
• Fast quantum logic gates with trapped-ion qubits
• Suppression of Heating Rates in Cryogenic Surface-Electrode Ion Traps
• Trapped-ion quantum logic gates based on oscillating magnetic fields
• Quantum Simulations with Cold Trapped Ions
• High-fidelity laser-free universal control of two trapped ion qubits
• Errors in trapped-ion quantum gates due to spontaneous photon scattering
• High-Fidelity Bell-State Preparation with ${}^{40}$Ca${}^{+}$ Optical Qubits
• Isotope-selective photo-ionization for calcium ion trapping
• Cryogenic Trapped-Ion System for Large Scale Quantum Simulation
• High-fidelity trapped-ion quantum logic using near-field microwaves
• Temperature Dependence of Electric Field Noise Above Gold Surfaces
• Robust entanglement
• Fabrication and heating rate study of microscopic surface electrode ion traps
• Robust and resource-efficient microwave near-field entangling ${}^9$Be${}^{+}$ gate
• Laserless trapped-ion quantum simulations without spontaneous scattering using microtrap arrays
• Simple Manipulation of a Microwave Dressed-State Ion Qubit
• Trapped-ion spin-motion coupling with microwaves and a near-motional oscillating magnetic field gradient
• Distance scaling of electric-field noise in a surface-electrode ion trap
• A microfabricated ion trap with integrated microwave circuitry
• A quantum computer using a trapped-ion spin molecule and microwave radiation
• Electric-field noise from thermally-activated fluctuators in a surface ion trap
• Fast, high-fidelity addressed single-qubit gates using efficient composite pulse sequences
• Generation of spin-motion entanglement in a trapped ion using long-wavelength radiation
• Ultra-low vibration closed-cycle cryogenic surface-electrode ion trap apparatus
• Probing Qubit Memory Errors at the Part-per-Million Level
• Multi-Qubit Gate with Trapped Ions for Microwave and Laser-Based Implementation
• Multilayer ion trap technology for scalable quantum computing and quantum simulation
• Photon scattering errors during stimulated Raman transitions in trapped-ion qubits
• Single-ion microwave near-field quantum sensor
• Universal Set of Gates for Microwave Dressed-State Quantum Computing
• Multilayer ion trap with three-dimensional microwave circuitry for scalable quantum logic applications
• A short response-time atomic source for trapped ion experiments
• Dark-resonance Doppler cooling and high fluorescence in trapped Ca-43 ions at intermediate magnetic field

Cited by in corpus (8)

• Single-qubit gates with errors at the $10^{-7}$ level
• Robust and fast microwave-driven quantum logic for trapped-ion qubits
• A Comparison of Calcium Sources for Ion-Trap Loading via Laser Ablation
• Measurement-Induced Heating of Trapped Ions
• Individually-addressed quantum gate interactions using dynamical decoupling
• In-situ characterization of qubit drive-phase distortions
• Superconducting surface trap chips for microwave-driven trapped ions
• Polarisation-insensitive state preparation for trapped-ion hyperfine qubits