A robust entangling gate for polar molecules using magnetic and microwave fields

Abstract

Polar molecules are an emerging platform for quantum technologies based on their long-range electric dipole-dipole interactions, which open new possibilities for quantum information processing and the quantum simulation of strongly correlated systems. Here, we use magnetic and microwave fields to design a fast entangling gate with $>0.999$ fidelity and which is robust with respect to fluctuations in the trapping and control fields and to small thermal excitations. These results establish the feasibility to build a scalable quantum processor with a broad range of molecular species in optical-lattice and optical-tweezers setups.

arXiv comment13 pages, 5 figures

References in corpus (67)

• Logic gates at the surface code threshold: Superconducting qubits poised for fault-tolerant quantum computing
• Dipole Blockade and Quantum Information Processing in Mesoscopic Atomic Ensembles
• Search for New Physics with Atoms and Molecules
• Fast quantum gates for neutral atoms
• Quantum computation with trapped polar molecules
• Quantum Computing with Very Noisy Devices
• Quantum computing with trapped ions
• A toolbox for lattice spin models with polar molecules
• Order of Magnitude Smaller Limit on the Electric Dipole Moment of the Electron
• Observation of Rydberg blockade between two atoms
• Realizing a lattice spin model with polar molecules
• Observation of collective excitation of two individual atoms in the Rydberg blockade regime
• Training Schrödinger's cat: quantum optimal control
• Single-Spin Addressing in an Atomic Mott Insulator
• Generation and manipulation of Schrödinger cat states in Rydberg atom arrays
• Ultracold dense samples of dipolar RbCs molecules in the rovibrational and hyperfine ground state
• Towards fault-tolerant quantum computing with trapped ions
• Magneto-optical trapping of a diatomic molecule
• Creation of ultracold ${}^{87}$RbCs molecules in the rovibrational ground state
• Molecules cooled below the Doppler limit
• Entangling Atomic Spins with a Strong Rydberg-Dressed Interaction
• Tunable Superfluidity and Quantum Magnetism with Ultracold Polar Molecules
• Schemes for robust quantum computation with polar molecules
• An Optical Tweezer Array of Ultracold Molecules
• Second order gradient ascent pulse engineering
• A Fermi Degenerate Gas of Polar Molecules
• A practical scheme for quantum computation with any two-qubit entangling gate
• Fast quantum logic gates with trapped-ion qubits
• Comparing, Optimising and Benchmarking Quantum Control Algorithms in a Unifying Programming Framework
• Controlling the hyperfine state of rovibronic ground-state polar molecules
• Building one molecule from a reservoir of two atoms
• Laser Cooling of Optically Trapped Molecules
• Enhanced sensitivity to variation of the fine structure constant and m_p/m_e in diatomic molecules
• 3-D Magneto-Optical Trap of Yttrium Monoxide
• Using Molecules to Measure Nuclear Spin-Dependent Parity Violation
• Nearly-linear light cones in long-range interacting quantum systems
• Dipolar Exchange Quantum Logic Gate with Polar Molecules
• Direct observation of bimolecular reactions of ultracold KRb molecules
• Creation of a low-entropy quantum gas of polar molecules in an optical lattice
• Interactions Between Rydberg-Dressed Atoms
• Ultracold polar molecules as qudits
• Robust encoding of a qubit in a molecule
• Universal gates based on targeted phase shifts in a 3D neutral atom array
• Ultracold molecules for quantum simulation: rotational coherences in CaF and RbCs
• $\Lambda$-Enhanced Imaging of Molecules in an Optical Trap
• Coherent addressing of individual neutral atoms in a 3D optical lattice
• Magnetic trapping and coherent control of laser-cooled molecules
• Sticky collisions of ultracold RbCs molecules
• Many body localization with long range interactions
• Duality in power-law localization in disordered one-dimensional systems
• Robust quantum logic in neutral atoms via adiabatic Rydberg dressing
• Quantum Engineering of a Low-Entropy Gas of Heteronuclear Bosonic Molecules in an Optical Lattice
• Robust Mølmer-Sørensen gate for neutral atoms using rapid adiabatic Rydberg dressing
• Molecular assembly of ground state cooled single atoms
• Controlling a quantum gas of polar molecules in an optical lattice
• Controlling the Rotational and Hyperfine State of Ultracold ${}^{87}$Rb${}^{133}$Cs Molecules
• Kitaev honeycomb and other exotic spin models with polar molecules
• Probing quantum thermalization of a disordered dipolar spin ensemble with discrete time-crystalline order
• Infrared-dressed entanglement of cold open-shell polar molecules for universal matchgate quantum computing
• Long rotational coherence times of molecules in a magnetic trap
• AC Stark Effect in Ultracold Polar RbCs Molecules
• Error-detection-based quantum fault tolerance against discrete Pauli noise
• Lieb-Robinson bounds for open quantum systems with long-ranged interactions
• Sensitive imaging of electromagnetic fields with paramagnetic polar molecules
• Revealing missing charges with generalised quantum fluctuation relations
• Characterizing the phase diagram of finite-size dipolar Bose-Hubbard systems
• Measuring molecular electric dipoles using trapped atomic ions and ultrafast laser pulses

Cited by in corpus (49)

• Ultracold polar molecules as qudits
• On-Demand Entanglement of Molecules in a Reconfigurable Optical Tweezer Array
• Quantum state manipulation and cooling of ultracold molecules
• Rotational Coherence Times of Polar Molecules in Optical Tweezers
• Laser cooled molecules
• Collisions of ultracold molecules in bright and dark optical dipole traps
• Formation of ultracold molecules by merging optical tweezers
• A Feshbach resonance in collisions between ultracold ground state molecules
• Long-lived entanglement of molecules in magic-wavelength optical tweezers
• Enhanced quantum control of individual ultracold molecules using optical tweezer arrays
• Enriching the quantum toolbox of ultracold molecules with Rydberg atoms
• Observation of Rydberg blockade due to the charge-dipole interaction between an atom and a polar molecule
• Seconds-scale coherence on nuclear spin transitions of ultracold polar molecules in 3D optical lattices
• A quantum phase transition in the one-dimensional water chain
• 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
• Efficient conversion of closed-channel dominated Feshbach molecules of ${}^{23}$Na${}^{40}$K to their absolute ground state
• Ultracold ${}^{88}{\mathrm{Sr}}_2$ molecules in the absolute ground state
• Complexes formed in collisions between ultracold alkali-metal diatomic molecules and atoms
• Magic Conditions for Multiple Rotational States of Bialkali Molecules in Optical Lattices
• Enhancing dipolar interactions between molecules using state-dependent optical tweezer traps
• Coherent Manipulation of the Internal State of Ultracold ${}^{87}$Rb${}^{133}$Cs Molecules with Multiple Microwave Fields
• Ultracold LiCr: a new pathway to quantum gases of paramagnetic polar molecules
• Preparation of ${}^{87}$Rb and ${}^{133}$Cs in the motional ground state of a single optical tweezer
• Quantum-Enhanced Metrology for Molecular Symmetry Violation using Decoherence-Free Subspaces
• Observation of resonant dipolar collisions in ultracold ${}^{23}$Na${}^{87}$Rb rotational mixtures
• Controlling the dynamics of ultracold polar molecules in optical tweezers
• Fast optical transport of ultracold molecules over long distances
• Entanglement via rotational blockade of MgF molecules in a magic potential
• Transition strength measurements to guide magic wavelength selection in optically trapped molecules
• A general approach to state-dependent optical tweezer traps for polar molecules
• Anisotropic Polarizability of Ultracold Ground-state ${}^{23}$Na${}^{87}$Rb Molecules
• Interaction potential for NaCs for ultracold scattering and spectroscopy
• Magnetic properties and quench dynamics of two interacting ultracold molecules in a trap
• Coherence of Symmetry-Protected Rotational Qubits in Cold Polyatomic Molecules
• Characterization of the lowest excited-state ro-vibrational level of ${}^{23}$Na${}^{87}$Rb
• The iSWAP gate with polar molecules: Robustness criteria for entangling operations
• Nonequilibrium quench dynamics of Bose-Einstein condensates of microwave-shielded polar molecules
• Quantum annealing with pairs of ${}^2\Sigma$ molecules as qubits
• Robust storage qubits in ultracold polar molecules
• Exact Entanglement Dynamics of Two Spins in Finite Baths
• Spin--spin interaction and magnetic Feshbach resonances in collisions of high-spin atoms with closed-shell atoms
• Empirical LiK excited state potentials: connecting short range and near dissociation expansions
• Molecule-molecule and atom-molecule collisions with ultracold RbCs molecules
• Roaming pathways and survival probability in real-time collisional dynamics of cold and controlled bialkali molecules
• First-order phase transition in atom-molecule quantum degenerate mixtures with coherent three-body recombination
• Scalable platform for qudit-based quantum computing using polar molecules
• Trapping polar molecules by surface acoustic waves
• Phase diagram and post-quench dynamics in a double spin-chain system in transverse fields