Enhanced quantum control of individual ultracold molecules using optical tweezer arrays

Abstract

Control over the quantum states of individual molecules is crucial in the quest to harness their rich internal structure and dipolar interactions for applications in quantum science. In this paper, we develop a toolbox of techniques for the control and readout of individually trapped polar molecules in an array of optical tweezers. Starting with arrays of up to eight Rb and eight Cs atoms, we assemble arrays of RbCs molecules in their rovibrational and hyperfine ground state with an overall efficiency of 48(2)%. We demonstrate global microwave control of multiple rotational states of the molecules and use an auxiliary tweezer array to implement site-resolved addressing and state control. We show how the rotational state of the molecule can be mapped onto the position of Rb atoms and use this capability to readout multiple rotational states in a single experimental run. Further, using a scheme for the mid-sequence detection of molecule formation errors, we perform rearrangement of assembled molecules to prepare small defect-free arrays. Finally, we discuss a feasible route to scaling to larger arrays of molecules.

arXiv comment18 pages, 8 figures. Updated bibliography

References in corpus (66)

• Feshbach Resonances in Ultracold Gases
• Probing many-body dynamics on a 51-atom quantum simulator
• Quantum computation with trapped polar molecules
• Cold and Ultracold Molecules: Science, Technology, and Applications
• Multiple Particle Interference and Quantum Error Correction
• Many-Body Physics with Individually-Controlled Rydberg Atoms
• Measurement-based quantum computation
• A toolbox for lattice spin models with polar molecules
• Production of cold molecules via magnetically tunable Feshbach resonances
• Realizing a lattice spin model with polar molecules
• An atom-by-atom assembler of defect-free arbitrary 2d atomic arrays
• Stimulated Raman adiabatic passage in physics, chemistry and beyond
• Realizing quantum Ising models in tunable two-dimensional arrays of single Rydberg atoms
• Condensed Matter Theory of Dipolar Quantum Gases
• Ultracold dense samples of dipolar RbCs molecules in the rovibrational and hyperfine ground state
• High-fidelity parallel entangling gates on a neutral atom quantum computer
• Cold molecules: Progress in Quantum Engineering of Chemistry and Quantum Matter
• Random Quantum Circuits
• Creation of ultracold ${}^{87}$RbCs molecules in the rovibrational ground state
• Tunable Superfluidity and Quantum Magnetism with Ultracold Polar Molecules
• A new bound on the electron's electric dipole moment
• Schemes for robust quantum computation with polar molecules
• Erasure conversion for fault-tolerant quantum computing in alkaline earth Rydberg atom arrays
• Analysis of imperfections in the coherent optical excitation of single atoms to Rydberg states
• Quantum magnetism with multicomponent polar molecules in an optical lattice
• Dipolar Exchange Quantum Logic Gate with Polar Molecules
• Ultracold polar molecules as qudits
• Robust encoding of a qubit in a molecule
• Towards the production of ultracold ground-state RbCs molecules: Feshbach resonances, weakly bound states, and coupled-channel model
• Erasure conversion in a high-fidelity Rydberg quantum simulator
• Production Efficiency of Ultracold Feshbach Molecules in Bosonic and Fermionic Systems
• On-Demand Entanglement of Molecules in a Reconfigurable Optical Tweezer Array
• Assembly of a rovibrational ground state molecule in an optical tweezer
• Sticky collisions of ultracold RbCs molecules
• Ultracold molecules: new probes on the variation of fundamental constants
• Probing site-resolved correlations in a spin system of ultracold molecules
• Loss of ultracold RbCs molecules via optical excitation of long-lived two-body collision complexes
• Bimolecular chemistry in the ultracold regime
• Precision test of statistical dynamics with state-to-state ultracold chemistry
• A Quantum Dipolar Spin Liquid
• Parallel low-loss measurement of multiple atomic qubits
• A robust entangling gate for polar molecules using magnetic and microwave fields
• Mid-circuit qubit measurement and rearrangement in a ${}^{171}$Yb atomic array
• Synthetic dimensions in ultracold molecules: quantum strings and membranes
• Forming a single molecule by magnetoassociation in an optical tweezer
• Implementation of Quantum Logic Gates Using Polar Molecules in Pendular States
• Tunable itinerant spin dynamics with polar molecules
• Fast non-destructive parallel readout of neutral atom registers in optical potentials
• Controlling the Rotational and Hyperfine State of Ultracold ${}^{87}$Rb${}^{133}$Cs Molecules
• Formation of ultracold molecules by merging optical tweezers
• Repetitive readout and real-time control of nuclear spin qubits in ${}^{171}$Yb atoms
• From Classical to Quantum Glasses with Ultracold Polar Molecules
• Enriching the quantum toolbox of ultracold molecules with Rydberg atoms
• A Simple, Versatile Laser System for the Creation of Ultracold Ground State Molecules
• Observation of Rydberg blockade due to the charge-dipole interaction between an atom and a polar molecule
• Active cancellation of servo-induced noise on stabilized lasers via feedforward
• Rydberg atom mediated non-destructive readout of collective rotational states in polar molecule arrays
• Controlling the ac Stark effect of RbCs with dc electric and magnetic fields
• Preparation of one ${}^{87}$Rb and one ${}^{133}$Cs atom in a single optical tweezer
• Nondestructive Detection of Polar Molecules via Rydberg Atoms
• An approach to quantum gas microscopy of polar molecules
• State-dependent fluorescence of neutral atoms in optical potentials
• Coherent Manipulation of the Internal State of Ultracold ${}^{87}$Rb${}^{133}$Cs Molecules with Multiple Microwave Fields
• Bichromatic Imaging of Single Molecules in an Optical Tweezer Array
• Preparation of ${}^{87}$Rb and ${}^{133}$Cs in the motional ground state of a single optical tweezer
• Versatile electric fields for the manipulation of ultracold NaK molecules

Cited by in corpus (17)

• Long-lived entanglement of molecules in magic-wavelength optical tweezers
• Two-axis twisting using Floquet-engineered XYZ spin models with polar molecules
• A hybrid atom tweezer array of nuclear spin and optical clock qubits
• Enhanced quantum state transfer via feedforward cancellation of optical phase noise
• Individual assembly of two-species Rydberg molecules using optical tweezers
• Long-lived multilevel coherences and spin-1 dynamics encoded in the rotational states of ultracold molecules
• The iSWAP gate with polar molecules: Robustness criteria for entangling operations
• A Generalized Theory for Optical Cooling of a Trapped Atom with Spin
• Rotational properties of two interacting cold polar molecules: linear, symmetric, and asymmetric tops
• Dressed-State Spectroscopy and Magic Trapping of Microwave-Shielded NaCs Molecules
• High-fidelity quantum state control of a polar molecular ion in a cryogenic environment
• Dual-species Optical tweezer for Rb and K atoms
• Multi-state detection and spatial addressing in a microscope for ultracold molecules
• Field-induced magnon decays in dipolar quantum magnets
• Hyperfine van der Waals repulsion between open-shell polar molecules
• Scalable platform for qudit-based quantum computing using polar molecules
• Lellouch-Lüscher relation for ultracold few-atom systems under confinement