Efficient, stabilized two-qubit gates on a trapped-ion quantum computer

Abstract

Quantum computing is currently limited by the cost of two-qubit entangling operations. In order to scale up quantum processors and achieve a quantum advantage, it is crucial to economize on the power requirement of two-qubit gates, make them robust to drift in experimental parameters, and shorten the gate times. In this paper, we present two methods, one exact and one approximate, to construct optimal pulses for entangling gates on a pair of ions within a trapped ion chain, one of the leading quantum computing architectures. Our methods are direct, non-iterative, and linear, and can construct gate-steering pulses requiring less power than the standard method by more than an order of magnitude in some parameter regimes. The power savings may generally be traded for reduced gate time and greater qubit connectivity. Additionally, our methods provide increased robustness to mode drift. We illustrate these trade-offs on a trapped-ion quantum computer.

References in corpus (35)

• Supplementary information for "Quantum supremacy using a programmable superconducting processor"
• Experimental issues in coherent quantum-state manipulation of trapped atomic ions
• Trapped-Ion Quantum Computing: Progress and Challenges
• Multi-particle entanglement of hot trapped ions
• Entanglement and quantum computation with ions in thermal motion
• High-fidelity two-qubit quantum logic gates using trapped calcium-43 ions
• High-fidelity quantum logic gates using trapped-ion hyperfine qubits
• High-Fidelity Universal Gate Set for ${}^9$Be${}^{+}$ Ion Qubits
• Experimental Comparison of Two Quantum Computing Architectures
• Benchmarking an 11-qubit quantum computer
• Manipulation and Detection of a Trapped Yb+ Ion Hyperfine Qubit
• Robust determination of molecular spectra on a quantum processor
• Verified Quantum Information Scrambling
• A quantum information processor with trapped ions
• Fast quantum logic gates with trapped-ion qubits
• Trapped-ion quantum logic gates based on oscillating magnetic fields
• Trapped ion quantum computation with transverse phonon modes
• Optimal quantum control of multi-mode couplings between trapped ion qubits for scalable entanglement
• Parallel Entangling Operations on a Universal Ion Trap Quantum Computer
• Scalable global entangling gates on arbitrary ion qubits
• Robust two-qubit gates in a linear ion crystal using a frequency-modulated driving force
• Ion trap quantum gates with amplitude-modulated laser beams
• Basic circuit compilation techniques for an ion-trap quantum machine
• Arbitrary-speed quantum gates within large ion crystals through minimum control of laser beams
• Robust entanglement gates for trapped-ion qubits
• Efficient Arbitrary Simultaneously Entangling Gates on a trapped-ion quantum computer
• Coherent Error Suppression in Multi-Qubit Entangling Gates
• Robust and resource-efficient microwave near-field entangling ${}^9$Be${}^{+}$ gate
• Phase-modulated decoupling and error suppression in qubit-oscillator systems
• High-fidelity measurement of qubits encoded in multilevel superconducting circuits
• Phase-modulated entangling gates robust to static and time-varying errors
• Noise Analysis for High-Fidelity Quantum Entangling Gates in an Anharmonic Linear Paul Trap
• Transport quantum logic gates for trapped ions
• Comparing Zeeman qubits to hyperfine qubits in the context of the surface code: ${}^{174}$Yb${}^{+}$ and ${}^{171}$Yb${}^{+}$
• Power-optimal, stabilized entangling gate between trapped-ion qubits

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• Designing Filter Functions of Frequency-Modulated Pulses for High-Fidelity Two-Qubit Gates in Ion Chains
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• Demonstration of Shor encoding on a trapped-ion quantum computer
• Quantum computational advantage attested by nonlocal games with the cyclic cluster state
• Realization of programmable Ising models in a trapped-ion quantum simulator
• The phase diagram of quantum chromodynamics in one dimension on a quantum computer
• Efficient motional-mode characterization for high-fidelity trapped-ion quantum computing
• Quantum optimal control in quantum technologies. Strategic report on current status, visions and goals for research in Europe
• Bespoke Pulse Design for Robust Rapid Two-Qubit Gates with Trapped Ions
• Toward simulating quantum field theories with controlled phonon-ion dynamics: A hybrid analog-digital approach
• QFT based quantum arithmetic logic unit on IBM quantum computer
• Engineering an Effective Three-spin Hamiltonian in Trapped-ion Systems for Applications in Quantum Simulation
• Experimental Measurement of Out-of-Time-Ordered Correlators at Finite Temperature
• Pulse optimization for high-precision motional-mode characterization in trapped-ion quantum computers
• Quantum computing architecture with Rydberg gates in trapped ions
• Low-rank optimal control of quantum devices