On-Demand Entanglement of Molecules in a Reconfigurable Optical Tweezer Array

Abstract

Entanglement is crucial to many quantum applications including quantum information processing, simulation of quantum many-body systems, and quantum-enhanced sensing. Molecules, because of their rich internal structure and interactions, have been proposed as a promising platform for quantum science. Deterministic entanglement of individually controlled molecules has nevertheless been a long-standing experimental challenge. Here we demonstrate, for the first time, on-demand entanglement of individually prepared molecules. Using the electric dipolar interaction between pairs of molecules prepared using a reconfigurable optical tweezer array, we realize an entangling two-qubit gate, and use it to deterministically create Bell pairs. Our results demonstrate the key building blocks needed for quantum information processing, simulation of quantum spin models, and quantum-enhanced sensing. They also open up new possibilities such as using trapped molecules for quantum-enhanced fundamental physics tests and exploring collisions and chemical reactions with entangled matter.

15 pages, 8 figures

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Cited by in corpus (65)

• Quantum state manipulation and cooling of ultracold molecules
• Long-lived entanglement of molecules in magic-wavelength optical tweezers
• Sub-millisecond Entanglement and iSWAP Gate between Molecular Qubits
• Enhanced quantum control of individual ultracold molecules using optical tweezer arrays
• Three-dimensional Magneto-optical Trapping of Barium Monofluoride
• Two-axis twisting using Floquet-engineered XYZ spin models with polar molecules
• Observation of generalized t-J spin dynamics with tunable dipolar interactions
• Trapping of Single Atoms in Metasurface Optical Tweezer Arrays
• Qudits for decomposing multiqubit gates and realizing quantum algorithms
• Quantum Gas Microscopy of Fermions in the Continuum
• Raman Sideband Cooling of Molecules in an Optical Tweezer Array
• Antiferromagnetic bosonic $t$-$J$ models and their quantum simulation in tweezer arrays
• A Blue-Detuned Magneto-Optical Trap of CaF Molecules
• Strong Spin-Motion Coupling in the Ultrafast Dynamics of Rydberg Atoms
• Æ codes
• A hybrid atom tweezer array of nuclear spin and optical clock qubits
• Spin exchange-enabled quantum simulator for large-scale non-Abelian gauge theories
• Quantum state tracking and control of a single molecular ion in a thermal environment
• Efficient Pathway to NaCs Ground State Molecules
• Benchmarking direct and indirect dipolar spin-exchange interactions between two Rydberg atoms
• Laser cooling of a fermionic molecule
• Strategies for implementing quantum error correction in molecular rotation
• Magneto-optical trapping of aluminum monofluoride
• Long-lived multilevel coherences and spin-1 dynamics encoded in the rotational states of ultracold molecules
• Two-mode Squeezing in Floquet Engineered Power-law Interacting Spin Models
• Quantum criticality in chains of planar rotors with dipolar interactions
• Engineering frustrated Rydberg spin models by graphical Floquet modulation
• The iSWAP gate with polar molecules: Robustness criteria for entangling operations
• Coherence of Symmetry-Protected Rotational Qubits in Cold Polyatomic Molecules
• Scheme for Deterministic Loading of Laser-Cooled Molecules into Optical Tweezers
• Universal quantum processors in spin systems via robust local pulse sequences
• Domain-Wall Ferroelectric Polarons in a two-dimensional Rotor Lattice Model
• Topological photon pumping in quantum optical systems
• Spectroscopy of laser cooling transitions in MgF
• Spin Squeezing with Itinerant Dipoles: A Case for Shallow Lattices
• Many-Body Anderson Metal-Insulator Transition using Kicked Quantum Gases
• Simultaneous ground-state cooling of two levitated nanoparticles by coherent scattering
• DiPolMol-Py: A Python package for calculations for ${}^2\Sigma$ ground-state molecules
• Rotational properties of two interacting cold polar molecules: linear, symmetric, and asymmetric tops
• Probing rotational decoherence with a trapped-ion planar rotor
• Pair Approximating the Action For Molecular Rotations in Path Integral Monte Carlo
• Dressed-State Spectroscopy and Magic Trapping of Microwave-Shielded NaCs Molecules
• Dual-species Optical tweezer for Rb and K atoms
• Atom-Molecule Superradiance and Entanglement with Cavity-Mediated Three-Body Interactions
• Molecular entanglement as a signature of the Unruh effect
• High-fidelity quantum state control of a polar molecular ion in a cryogenic environment
• Vibronic coupling limits the use of high-lying electronic states in complex molecules for laser cooling
• Magneto-Optical Trapping of a Metal Hydride Molecule
• Narrowline cooling of dysprosium atoms in an optical tweezer array
• Slowing YbF molecules using radiation pressure
• Fast real-time arbitrary waveform generation using graphic processing units
• Ultracold coherent control of molecular collisions at a Förster resonance
• Ground-state selection via many-body superradiant decay
• Measurement of the Electric Dipole Moment of AlCl by Stark Level Spectroscopy
• Model-Based Real-Time Synthesis of Acousto-Optically Generated Laser-Beam Patterns and Tweezer Arrays
• Constructing qubit edge states by inverse-designing the electromagnetic environment
• Strongly dipolar molecular Bose-Einstein condensates: From few- to many-body physics
• Parity-Doublet Coherence Times in Optically Trapped Polyatomic Molecules
• Topological floating phase of dipolar bosons in an optical ladder
• Generalized pulse design in Floquet engineering: Application to interacting spin systems
• Narrowline Laser Cooling and Spectroscopy of Molecules via Stark States
• Hyperfine van der Waals repulsion between open-shell polar molecules
• Long-range quantum emitter interactions mediated by a non-local metasurface: Application to qubit-qubit entanglement
• Control of Dipolar Dynamics by Geometrical Programming
• Ultracold high-spin $\Sigma$-state polar molecules for new physics searches