Demonstration of a Quantum Gate using Electromagnetically Induced Transparency

Abstract

We demonstrate a native $\mathrm{CNOT}$ gate between two individually addressed neutral atoms based on electromagnetically induced transparency (EIT). This protocol utilizes the strong long-range interactions of Rydberg states to enable conditional state transfer on the target qubit when operated in the blockade regime. An advantage of this scheme is it enables implementation of multi-qubit CNOT${}^k$ gates using a pulse sequence independent of qubit number, providing a simple gate for efficient implementation of digital quantum algorithms and stabiliser measurements for quantum error correction. We achieve a loss corrected gate fidelity of ${\mathcal{F}}_{\mathrm{CNOT}}^{\mathrm{cor}}=0.82(6)$, and prepare an entangled Bell state with ${\mathcal{F}}_{\mathrm{Bell}}^{\mathrm{cor}}=0.66(5)$, limited at present by laser power. We present a number of technical improvements to advance this to a level required for fault-tolerant scaling.

arXiv comment6 pages, 5 figures plus Supplementary Material

References in corpus (45)

• Quantum information with Rydberg atoms
• Dipole Blockade and Quantum Information Processing in Mesoscopic Atomic Ensembles
• An atom-by-atom assembler of defect-free arbitrary 2d atomic arrays
• Demonstration of a neutral atom controlled-NOT quantum gate
• Entanglement of two individual neutral atoms using Rydberg blockade
• Parallel implementation of high-fidelity multi-qubit gates with neutral atoms
• Synthetic three-dimensional atomic structures assembled atom by atom
• Demonstration of multi-qubit entanglement and algorithms on a programmable neutral atom quantum computer
• Experimental realization of a symmetry protected topological phase of interacting bosons with Rydberg atoms
• Quantum computing with neutral atoms
• ARC: An open-source library for calculating properties of alkali Rydberg atoms
• High-fidelity control and entanglement of Rydberg atom qubits
• Quasiclassical calculations of BBR-induced depopulation rates and effective lifetimes of Rydberg nS, nP and nD alkali-metal atoms with n < 80
• High-Fidelity Entanglement and Detection of Alkaline-Earth Rydberg Atoms
• Rydberg atom quantum technologies
• Quantum simulation and computing with Rydberg-interacting qubits
• Rydberg mediated entanglement in a two-dimensional neutral atom qubit array
• Storage and control of optical photons using Rydberg polaritons
• Mesoscopic Rydberg Gate based on Electromagnetically Induced Transparency
• In situ single-atom array synthesis by dynamic holographic optical tweezers
• Randomized benchmarking of single qubit gates in a 2D array of neutral atom qubits
• A Rydberg blockade CNOT gate and entanglement in a 2D array of neutral atom qubits
• Storage of multiple coherent microwave excitations in an electron spin ensemble
• Entangling two atoms of different isotopes via Rydberg blockade
• Microwave dressing of Rydberg dark states
• Coherence and Rydberg blockade of atomic ensemble qubits
• Fast multi-qubit gates by adiabatic evolution in interacting excited state manifolds
• Local optical control of the resonant dipole-dipole interaction between Rydberg atoms
• Rydberg blockade, Förster resonances, and quantum state measurements with different atomic species
• Measurement of the Angular Dependence of the Dipole-Dipole Interaction Between Two Individual Rydberg Atoms at a Förster Resonance
• High fidelity entanglement of neutral atoms via a Rydberg-mediated single-modulated-pulse controlled-PHASE gate
• Single-step implementation of high fidelity $n$-bit Toffoli gate
• Deutsch, Toffoli, and CNOT Gates via Rydberg Blockade of Neutral Atoms
• Asymmetric blockade and multi-qubit gates via dipole-dipole interactions
• Fast three-qubit Toffoli quantum gate based on the three-body Förster resonances in Rydberg atoms
• Efficient Grover search with Rydberg blockade
• Conditional dynamics induced by new configurations for Rydberg dipole-dipole interactions
• A blueprint for fault-tolerant quantum computation with Rydberg atoms
• Microwave control of Rydberg atom interactions
• Sub-kHz excitation lasers for Quantum Information Processing with Rydberg atoms
• Single Atom Imaging with an sCMOS camera
• Analysis of the entanglement between two individual atoms using global Raman rotations
• Grover search algorithm with Rydberg-blockaded atoms: Quantum Monte Carlo simulations
• Supersensitive measurement using single-atom control of an atomic ensemble
• Time-Optimal Two- and Three-Qubit Gates for Rydberg Atoms

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• Interspecies Förster resonances of Rb-Cs Rydberg $d$-states for enhanced multi-qubit gate fidelities
• Parallel implementation of CNOT${}^N$ and C${}_2$NOT${}^2$ gates via homonuclear and heteronuclear Förster interactions of Rydberg atoms
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• Optimized readout strategies for neutral atom quantum processors
• Fast entangling quantum gates with almost-resonant modulated driving
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• Scalable Heteronuclear Architecture of Neutral Atoms Based on EIT
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