Tunable itinerant spin dynamics with polar molecules
arXiv:2208.02216 · doi:10.1038/s41586-022-05479-2
Abstract
Strongly interacting spins underlie many intriguing phenomena and applications ranging from magnetism to quantum information processing. Interacting spins combined with motion display exotic spin transport phenomena, such as superfluidity arising from pairing of spins induced by spin attraction. To understand these complex phenomena, an interacting spin system with high controllability is desired. Quantum spin dynamics have been studied on different platforms with varying capabilities. Here we demonstrate tunable itinerant spin dynamics enabled by dipolar interactions using a gas of potassium-rubidium molecules confined to two-dimensional planes, where a spin-1/2 system is encoded into the molecular rotational levels. The dipolar interaction gives rise to a shift of the rotational transition frequency and a collision-limited Ramsey contrast decay that emerges from the coupled spin and motion. Both the Ising and spin exchange interactions are precisely tuned by varying the strength and orientation of an electric field, as well as the internal molecular state. This full tunability enables both static and dynamical control of the spin Hamiltonian, allowing reversal of the coherent spin dynamics. Our work establishes an interacting spin platform that allows for exploration of many-body spin dynamics and spin-motion physics utilizing the strong, tunable dipolar interaction.
arXiv comment22 pages, including 4 + 2 figures
References in corpus (47)
- Spintronics: Fundamentals and applications
- A bound on chaos
- Black holes and the butterfly effect
- Quantum many-body systems out of equilibrium
- A toolbox for lattice spin models with polar molecules
- Realizing a lattice spin model with polar molecules
- Programmable Quantum Simulations of Spin Systems with Trapped Ions
- Realizing quantum Ising models in tunable two-dimensional arrays of single Rydberg atoms
- Cold molecules: Progress in Quantum Engineering of Chemistry and Quantum Matter
- Approaching the Heisenberg limit without single-particle detection
- Quantum-enhanced sensing of displacements and electric fields with large trapped-ion crystals
- Quantum magnetism with multicomponent polar molecules in an optical lattice
- Dipolar Exchange Quantum Logic Gate with Polar Molecules
- Probing quench dynamics across a quantum phase transition into a 2D Ising antiferromagnet
- A quantum many-body spin system in an optical lattice clock
- Quantum Magnetism with Polar Alkali Dimers
- Evaporation of microwave-shielded polar molecules to quantum degeneracy
- Time-Reversal-Based Quantum Metrology with Many-Body Entangled States
- Quantum phases of a Two-Dimensional Dipolar Fermi Gas
- Probing quantum information propagation with out-of-time-ordered correlators
- Resonant collisional shielding of reactive molecules using electric fields
- Anomalous Behavior of Spin Systems with Dipolar Interactions
- Dipolar evaporation of reactive molecules to below the Fermi temperature
- Quasi-Universal Dipolar Scattering in Cold and Ultracold Gases
- Far from equilibrium quantum magnetism with ultracold polar molecules
- Anisotropic Polarizability of Ultracold Polar KRb Molecules
- Tuning of dipolar interactions and evaporative cooling in a three-dimensional molecular quantum gas
- Universal spin dynamics in two-dimensional Fermi gases
- A Quantum Dipolar Spin Liquid
- Rotational Coherence Times of Polar Molecules in Optical Tweezers
- Emergent hydrodynamics in a strongly interacting dipolar spin ensemble
- Dipolar Stabilization of an Attractive Bose Gas in a One Dimensional Lattice
- Extending rotational coherence of interacting polar molecules in a spin-decoupled magic trap
- Spin-orbital dynamics in a system of polar molecules
- Observation of superfluidity in a strongly correlated two-dimensional Fermi gas
- Reactions Between Layer-Resolved Molecules Mediated by Dipolar Exchange
- Dynamical generation of spin squeezing in ultra-cold dipolar molecules
- Quasi-two dimensional dipolar scattering
- Polar molecules in frustrated triangular ladders
- Resonant and first-order dipolar interactions between ultracold molecules in static and microwave electric fields
- Bose-Einstein Condensation and Many-Body Localization of Rotational Excitations of Polar Molecules
- Dynamics of an itinerant spin-3 atomic dipolar gas in an optical lattice
- Strongly dipolar gases in a one-dimensional lattice: Bloch oscillations and matter-wave localization
- Observation of Microwave Shielding of Ultracold Molecules
- Fulde-Ferrell-Larkin-Ovchinnikov state in bilayer dipolar systems
- Floquet Hamiltonian Engineering of an Isolated Many-Body Spin System
- Experimental Measurement of Out-of-Time-Ordered Correlators at Finite Temperature
Cited by in corpus (38)
- On-Demand Entanglement of Molecules in a Reconfigurable Optical Tweezer Array
- Quantum state manipulation and cooling of ultracold molecules
- Dipolar quantum solids emerging in a Hubbard quantum simulator
- Blue-Detuned Magneto-Optical Trap of Molecules
- Enhanced quantum control of individual ultracold molecules using optical tweezer arrays
- Two-axis twisting using Floquet-engineered XYZ spin models with polar molecules
- Diatomic molecules of alkali-metal and alkaline-earth-metal atoms: interaction potentials, dipole moments, and polarizabilities
- Observation of generalized t-J spin dynamics with tunable dipolar interactions
- Robust nuclear spin entanglement via dipolar interactions in polar molecules
- Atomic Quantum Technologies for Quantum Matter and Fundamental Physics Applications
- Strong Spin-Motion Coupling in the Ultrafast Dynamics of Rydberg Atoms
- Higher-Order Methods for Hamiltonian Engineering Pulse Sequence Design
- Quantum simulation of the central spin model with a Rydberg atom and polar molecules in optical tweezers
- Quantum state tracking and control of a single molecular ion in a thermal environment
- Enhanced quantum state transfer via feedforward cancellation of optical phase noise
- Interacting Circular Rydberg Atoms Trapped in Optical Tweezers
- Time-reversal in a dipolar quantum many-body spin system
- Unbounded entropy production and violent fragmentation for repulsive-to-attractive interaction quench in long-range interacting systems
- Exploring the Berezinskii-Kosterlitz-Thouless Transition in a Two-dimensional Dipolar Bose Gas
- Long-lived multilevel coherences and spin-1 dynamics encoded in the rotational states of ultracold molecules
- Realizing multiband states with ultracold dipolar quantum simulators
- Transversal effects on the ground-state of hard-core dipolar bosons in one-dimensional optical lattices
- Collisions of Spin-polarized YO Molecules for Single Partial Waves
- Spin Squeezing with Itinerant Dipoles: A Case for Shallow Lattices
- Momentum-selective pair creation of spin excitations in dipolar bilayers
- Dressed-State Spectroscopy and Magic Trapping of Microwave-Shielded NaCs Molecules
- Probing rotational decoherence with a trapped-ion planar rotor
- Ab-Initio Approach to Many-Body Quantum Spin Dynamics
- Spin--spin interaction and magnetic Feshbach resonances in collisions of high-spin atoms with closed-shell atoms
- Atom-Molecule Superradiance and Entanglement with Cavity-Mediated Three-Body Interactions
- Multi-state detection and spatial addressing in a microscope for ultracold molecules
- Emergence of topological states in relaxation dynamics of interacting bosons
- Self-Ordered Supersolid in Spinor Condensates with Cavity-Mediated Spin-Momentum-Mixing Interactions
- Lifshitz transition in the phase diagram of two-leg - ladder systems at low filling
- Ultracold polar molecules for quantum science and technology
- Numerically efficient unitary evolution for Hamiltonians beyond nearest-neighbors
- Mean Field Decoupling of Single Impurity Anderson Model through Auxiliary Majorana Fermions
- Metastable ferromagnetic clusters in dissipative many-body systems of polar molecules