Fast mixed-species quantum logic gates for trapped-ion quantum networks
arXiv:2412.07185 · doi:10.1103/gyls-g198
Abstract
Quantum logic operations between physically distinct qubits is an essential aspect of large-scale quantum information processing. We propose an approach to high-speed mixed-species entangling operations in trapped-ion quantum computers, based on mechanical excitation of spin-dependent ion motion by ultrafast pulsed lasers. We develop the theory and machine-design of pulse sequences that realise MHz-speed `fast gates' between a range of mixed-isotope and mixed-species ion pairings with experimentally-realistic laser controls. We demonstrate the robustness of the gate mechanism against expected experimental errors, and identify errors in ultrafast single-qubit control as the primary technical limitation. The proposed mixed-species gate mechanism can be used for fast transfer of quantum information between specialized qubits and quantum memories, which we show enables the protection of matter-photon interfaces against rapid spin dephasing in optical networks of trapped-ion processors.
Supplemental material included at the end of the manuscript
References in corpus (53)
- High-fidelity two-qubit quantum logic gates using trapped calcium-43 ions
- High-fidelity quantum logic gates using trapped-ion hyperfine qubits
- Large Scale Modular Quantum Computer Architecture with Atomic Memory and Photonic Interconnects
- High-fidelity preparation, gates, memory and readout of a trapped-ion quantum bit
- High-rate, high-fidelity entanglement of qubits across an elementary quantum network
- Fast and robust two-qubit gates for scalable ion trap quantum computing
- Fast quantum logic gates with trapped-ion qubits
- High-fidelity entanglement between a trapped ion and a telecom photon via quantum frequency conversion
- Parallel Entangling Operations on a Universal Ion Trap Quantum Computer
- Distributed Quantum Computing across an Optical Network Link
- Multi-Element Logic Gates for Trapped-Ion Qubits
- Roadmap on STIRAP applications
- Ultrafast Gates for Single Atomic Qubits
- Quantum gate teleportation between separated qubits in a trapped-ion processor
- Repeated multi-qubit readout and feedback with a mixed-species trapped-ion register
- Scaling Ion Trap Quantum Computation through Fast Quantum Gates
- Coherent control of trapped ions using off-resonant lasers
- Multi-Species Trapped Ion Node for Quantum Networking
- Hybrid quantum logic and a test of Bell's inequality using two different atomic isotopes
- Sympathetic Cooling of Mixed Species Two-Ion Crystals for Precision Spectroscopy
- Ultrafast Spin-Motion Entanglement and Interferometry with a Single Atom
- Robust Quantum Memory in a Trapped-Ion Quantum Network Node
- Controlling trapping potentials and stray electric fields in a microfabricated ion trap through design and compensation
- Demonstration of two-atom entanglement with ultrafast optical pulses
- Noise Analysis for High-Fidelity Quantum Entangling Gates in an Anharmonic Linear Paul Trap
- Quantum Control of Qubits and Atomic Motion Using Ultrafast Laser Pulses
- Measurement of Ion Motional Heating Rates over a Range of Trap Frequencies and Temperatures
- Benchmarking a high-fidelity mixed-species entangling gate
- Minimally complex ion traps as modules for quantum communication and computing
- Verifiable blind quantum computing with trapped ions and single photons
- Entangling an arbitrary pair of qubits in a long ion crystal
- Dual-Species, Multi-Qubit Logic Primitives for Ca+/Sr+ Trapped-Ion Crystals
- The Character of Motional Modes for Entanglement and Sympathetic Cooling of Mixed-Species Trapped Ion Chains
- High-fidelity remote entanglement of trapped atoms mediated by time-bin photons
- Sensing Atomic Motion from the Zero Point to Room Temperature with Ultrafast Atom Interferometry
- Scaling Trapped Ion Quantum Computers Using Fast Gates and Microtraps
- Quantum Algorithmic Readout in Multi-Ion Clocks
- Optimised fast gates for quantum computing with trapped ions
- Numeric optimization for configurable, parallel, error-robust entangling gates in large ion registers
- Fast photon-mediated entanglement of continuously-cooled trapped ions for quantum networking
- Implications of surface noise for the motional coherence of trapped ions
- Breaking the entangling gate speed limit for trapped-ion qubits using a phase-stable standing wave
- Fast gates for ion traps by splitting laser pulses
- A Study on Fast Gates for Large-Scale Quantum Simulation with Trapped Ions
- Ultrafast coherent excitation of a Ca ion
- Ion-Photon Entanglement and Bell Inequality Violation with 138Ba+
- Micromotion-Enhanced Fast Entangling Gates For Trapped Ion Quantum Computing
- Fast entangling gates in long ion chains
- Stability thresholds and calculation techniques for fast entangling gates on trapped ions
- Ultra-fast two-qubit ion gate using sequences of resonant pulses
- A two-dimensional architecture for fast large-scale trapped-ion quantum computing
- Scalable quantum computation with fast gates in two-dimensional microtrap arrays of trapped ions
- Low-excitation transport and separation of high-mass-ratio mixed-species ion chains