Engineering Large Stark Shifts for Control of Individual Clock State Qubits

Abstract

In quantum information science, the external control of qubits must be balanced with the extreme isolation of the qubits from the environment. Atomic qubit systems typically mitigate this balance through the use of gated laser fields that can create superpositions and entanglement between qubits. Here we propose the use of high-order optical Stark shifts from optical fields to manipulate the splitting of atomic qubits that are insensitive to other types of fields. We demonstrate a fourth-order AC Stark shift in a trapped atomic ion system that does not require extra laser power beyond that needed for other control fields. We individually address a chain of tightly-spaced trapped ions and show how these controlled shifts can produce an arbitrary product state of ten ions as well as generate site-specific magnetic field terms in a simulated spin Hamiltonian.

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• Observation of Stark many-body localization without disorder
• Cryogenic Trapped-Ion System for Large Scale Quantum Simulation
• Observation of Domain Wall Confinement and Dynamics in a Quantum Simulator
• Basic circuit compilation techniques for an ion-trap quantum machine
• Multi-Species Trapped Ion Node for Quantum Networking
• Observation of Hopping and Blockade of Bosons in a Trapped Ion Spin Chain
• Crosstalk Suppression in Individually Addressed Two-Qubit Gates in a Trapped-Ion Quantum Computer
• Experimental Realization of the Rabi-Hubbard Model with Trapped Ions
• Engineering dynamically decoupled quantum simulations with trapped ions
• Trapped-ion quantum simulation of excitation transport: disordered, noisy, and long-range connected quantum networks
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• Observation of Non-Markovian Spin Dynamics in a Jaynes-Cummings-Hubbard Model using a Trapped-Ion Quantum Simulator
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• Modelling noise in global Molmer-Sorensen interactions applied to quantum approximate optimization
• Rapid production of defect-free beryllium ion Coulomb crystals
• Heisenberg-Limited Spin-Mechanical Gravimetry
• Observation of quantum superposition of topological defects in a trapped ion quantum simulator
• Precision Polarization Tuning for Light Shift Mitigation in Trapped-Ion Qubits
• Realization and Calibration of Continuously Parameterized Two-Qubit Gates on a Trapped-Ion Quantum Processor
• Quantum fidelity kernel with a trapped-ion simulation platform
• Strong light shifts from near-resonant and polychromatic fields: comparison of Floquet theory and experiment
• Floquet Gauge Pumps as Sensors for Spectral Degeneracies Protected by Symmetry or Topology
• Ion-Based Characterization of Laser Beam Profiles for Quantum Information Processing
• Hyperfine spectroscopy and laser cooling of the fermionic isotopes ${}^{47}$Ti and ${}^{49}$Ti
• Robust and Parallel Control of Many Qubits
• Protective measurement of a qubit by a qubit probe
• Stability of current-carrying states in hard-core bosons with long-range hopping on a square lattice
• Observation of the electric Breit-Rabi Effect
• Noise-Aware Circuit Compilations for a Continuously Parameterized Two-Qubit Gateset