Laser-free trapped-ion entangling gates with simultaneous insensitivity to qubit and motional decoherence

Abstract

The dominant error sources for state-of-the-art laser-free trapped-ion entangling gates are decoherence of the qubit state and the ion motion. The effect of these decoherence mechanisms can be suppressed with additional control fields, or with techniques that have the disadvantage of reducing gate speed. Here, we propose using a near-motional-frequency magnetic field gradient to implement a laser-free gate that is simultaneously resilient to both types of decoherence, does not require additional control fields, and has a relatively small cost in gate speed.

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Cited by in corpus (16)

• High-fidelity laser-free universal control of two trapped ion qubits
• Quantum amplification of boson-mediated interactions
• Theory of robust multi-qubit non-adiabatic gates for trapped-ions
• High-fidelity trapped-ion qubit operations with scalable photonic modulators
• One- and two-qubit gate infidelities due to motional errors in trapped ions and electrons
• Universal hybrid quantum computing in trapped ions
• Feasibility study of quantum computing using trapped electrons
• Quantum control methods for robust entanglement of trapped ions
• Robust two-qubit trapped ions gates using spin-dependent squeezing
• Numerical optimization of amplitude-modulated pulses in microwave-driven entanglement generation
• Entangling gates for trapped-ion quantum computation and quantum simulation
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• Individual addressing of trapped ion qubits with geometric phase gates
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• Robust Oscillator-Mediated Phase Gates Driven by Low-Intensity Pulses
• Tunable transverse spin-motion coupling for quantum information processing