Optimal quantum control of multi-mode couplings between trapped ion qubits for scalable entanglement

Abstract

We demonstrate high fidelity entangling quantum gates within a chain of five trapped ion qubits by optimally shaping optical fields that couple to multiple collective modes of motion. We individually address qubits with segmented optical pulses to construct multipartite entangled states in a programmable way. This approach enables both high fidelity and fast quantum gates that can be scaled to larger qubit registers for quantum computation and simulation.

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• Observation of a quantum phase transition in the quantum Rabi model with a single trapped ion
• Fault-tolerant quantum error detection
• Scalable global entangling gates on arbitrary ion qubits
• Robust two-qubit gates in a linear ion crystal using a frequency-modulated driving force
• Digital Quantum Simulation of the Schwinger Model and Symmetry Protection with Trapped Ions
• Noisy intermediate-scale quantum computers
• Practical trapped-ion protocols for universal qudit-based quantum computing
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• Efficient Arbitrary Simultaneously Entangling Gates on a trapped-ion quantum computer
• Robust and resource-efficient microwave near-field entangling ${}^9$Be${}^{+}$ gate
• Benchmarking a trapped-ion quantum computer with 30 qubits
• Trapped Ion Quantum Information Processing with Squeezed Phonons
• Two-qubit entangling gates within arbitrarily long chains of trapped ions
• Qubit metrology of ultralow phase noise using randomized benchmarking
• Phase-modulated decoupling and error suppression in qubit-oscillator systems
• Phase-modulated entangling gates robust to static and time-varying errors
• Simulating the performance of a distance-3 surface code in a linear ion trap
• Noise Analysis for High-Fidelity Quantum Entangling Gates in an Anharmonic Linear Paul Trap
• Realizing coherently convertible dual-type qubits with the same ion species
• Genetic Algorithms for Digital Quantum Simulations
• Ball-grid array architecture for microfabricated ion traps
• Scalable and Parallel Tweezer Gates for Quantum Computing with Long Ion Strings
• Pulsed force sequences for fast phase-insensitive quantum gates in trapped ions
• Fast Generation of GHZ-like States Using Collective-Spin XYZ Model
• Quantum walks and Dirac cellular automata on a programmable trapped-ion quantum computer
• Entangling an arbitrary pair of qubits in a long ion crystal
• Efficient, stabilized two-qubit gates on a trapped-ion quantum computer
• Encoding qubits in multimode grid states
• The Character of Motional Modes for Entanglement and Sympathetic Cooling of Mixed-Species Trapped Ion Chains
• Toward convergence of effective field theory simulations on digital quantum computers
• Batch Optimization of Frequency-Modulated Pulses for Robust Two-qubit Gates in Ion Chains
• High resolution quantum sensing with shaped control pulses
• Real-time quantum calculations of phase shifts using wave packet time delays
• Quantum Computation under Micromotion in a Planar Ion Crystal
• Ground-state energy estimation of the water molecule on a trapped ion quantum computer
• Integrated ${}^9$Be${}^{+}$ multi-qubit gate device for the ion-trap quantum computer
• Probing many-body localization on a noisy quantum computer
• Searching for quantum optimal controls in the presence of singular critical points
• Designing Filter Functions of Frequency-Modulated Pulses for High-Fidelity Two-Qubit Gates in Ion Chains
• Transport Implementation of the Bernstein-Vazirani Algorithm with Ion Qubits
• Quantum optimal control using phase-modulated driving fields
• Quantum Algorithmic Readout in Multi-Ion Clocks
• Quantum oscillator noise spectroscopy via displaced cat states
• Numeric optimization for configurable, parallel, error-robust entangling gates in large ion registers
• Optimal control of families of quantum gates
• Scalable hyperfine qubit state detection via electron shelving in the ${}^2$D${}_{5/2}$ and ${}^2$F${}_{7/2}$ manifolds in ${}^{171}$Yb${}^{+}$
• Synthesis of and compilation with time-optimal multi-qubit gates
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• Interactive Protocols for Classically-Verifiable Quantum Advantage
• Trapped ion scaling with pulsed fast gates
• Demonstration of Shor encoding on a trapped-ion quantum computer
• Micromotion-enabled improvement of quantum logic gates with trapped ions
• High Fidelity Quantum Gates for Trapped Ions under Micromotion
• High Fidelity Entangling Gates in a 3D Ion Crystal under Micromotion
• One-dimensional quantum computing with a 'segmented chain' is feasible with today's gate fidelities
• Universal Control of Ion Qubits in a Scalable Microfabricated Planar Trap
• Multi-round QAOA and advanced mixers on a trapped-ion quantum computer
• Quantum Thermometry with Trapped Ions
• Taming quantum systems: A tutorial for using shortcuts-to-adiabaticity, quantum optimal control, and reinforcement learning
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• Validating and Certifying Stabilizer States
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• Power-optimal, stabilized entangling gate between trapped-ion qubits
• Entangling gates for trapped-ion quantum computation and quantum simulation
• Fast multi-qubit global-entangling gates without individual addressing of trapped ions
• Scalable improvement of the generalized Toffoli gate realization using trapped-ion-based qutrits
• Direct digital synthesis of microwave waveforms for quantum computing
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• Probing phases of quantum matter with an ion-trap tensor-network quantum eigensolver
• Bilayer crystals of trapped ions for quantum information processing
• Strong-coupling quantum logic of trapped ions
• Enhancing dissipative cat-state generation via nonequilibrium pump fields
• Quantum Simulation of the Two-Dimensional Weyl Equation in a Magnetic Field
• Preparation of high fidelity entangled cat states with composite pulses
• Comparison of Spontaneous Emission in Trapped Ion Multiqubit Gates at High Magnetic Fields
• Bespoke Pulse Design for Robust Rapid Two-Qubit Gates with Trapped Ions
• Quantum optimal control in quantum technologies. Strategic report on current status, visions and goals for research in Europe
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• Qubit-assisted quantum metrology under a time-reversal strategy
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• Qubit dynamics driven by smooth pulses of finite duration
• Generally noise-resilient quantum gates for trapped-ions
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• Time-Optimal Two- and Three-Qubit Gates for Rydberg Atoms
• Bounds on the recurrence probability in periodically-driven quantum systems
• Achieving the Heisenberg limit of metrology via measurement on an ancillary qubit
• Pulse optimization for high-precision motional-mode characterization in trapped-ion quantum computers
• Quantum computing architecture with Rydberg gates in trapped ions
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• Experimental factoring integers using fixed-point-QAOA with a trapped-ion quantum processor
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