Schemes for robust quantum computation with polar molecules

Abstract

We propose to use a new platform - ultracold polar molecules - for quantum computing with switchable interactions. The on/off switch is accomplished by selective excitation of one of the "0" or "1" qubits - long-lived molecular states - to an "excited" molecular state with a considerably different dipole moment. We describe various schemes based on this switching of dipolar interactions where the selective excitation between ground and excited states is accomplished via optical, micro-wave, or electric fields. We also generalize the schemes to take advantage of the dipole blockade mechanism when dipolar interactions are very strong. These schemes can be realized in several recently proposed architectures.

4 pages, 4 figures

References in corpus (19)

• Dipole Blockade and Quantum Information Processing in Mesoscopic Atomic Ensembles
• Fast quantum gates for neutral atoms
• Quantum computation with trapped polar molecules
• Entanglement of atoms via cold controlled collisions
• Controlled Collisions for Multiparticle Entanglement of Optically Trapped Atoms
• Local Blockade of Rydberg Excitation in an Ultracold Gas
• Approaching Unit Visibility for Control of a Superconducting Qubit with Dispersive Readout
• Molecular Quantum Computing by an Optimal Control Algorithm for Unitary Transformations
• Cooling the Collective Motion of Trapped Ions to Initialize a Quantum Register
• Deceleration and electrostatic trapping of OH radicals
• Photoassociative Production and Trapping of Ultracold KRb Molecules
• Production and state-selective detection of ultracold, ground state RbCs molecules
• Slowing heavy, ground-state molecules using an alternating gradient decelerator
• Capacitive coupling of atomic systems to mesoscopic conductors
• Production Efficiency of Ultracold Feshbach Molecules in Bosonic and Fermionic Systems
• An AC electric trap for ground-state molecules
• Atom Chips: Fabrication and Thermal Properties
• Two-dimensional trapping of dipolar molecules in time-varying electric fields
• Quantum Computation with Diatomic Bits in Optical Lattices

Cited by in corpus (162)

• A High Phase-Space-Density Gas of Polar Molecules
• Cold and Ultracold Molecules: Science, Technology, and Applications
• Condensed Matter Theory of Dipolar Quantum Gases
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• An Optical Tweezer Array of Ultracold Molecules
• A Fermi Degenerate Gas of Polar Molecules
• Manipulation of Molecules with Electromagnetic Fields
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• Radio Frequency Magneto-Optical Trapping of CaF with High Density
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• Dipolar Exchange Quantum Logic Gate with Polar Molecules
• Evaporation of microwave-shielded polar molecules to quantum degeneracy
• Formation and interactions of cold and ultracold molecules: new challenges for interdisciplinary physics
• Ultracold polar molecules as qudits
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• Microwave shielding of ultracold polar molecules
• Second-Scale Nuclear Spin Coherence Time of Trapped Ultracold ${}^{23}$Na${}^{40}$K Molecules
• $\Lambda$-Enhanced Imaging of Molecules in an Optical Trap
• Ground-state properties of few dipolar bosons in a quasi-one-dimensional harmonic trap
• Photo-induced two-body loss of ultracold molecules
• Magnetic trapping and coherent control of laser-cooled molecules
• Giant formation rates of ultracold molecules via Feshbach Optimized Photoassociation
• Bimolecular chemistry in the ultracold regime
• Laser cooling of molecules
• Ultracold polar molecules near quantum degeneracy
• A Scalable Quantum Computing Platform Using Symmetric-Top Molecules
• Laser cooled molecules
• Deep laser cooling and efficient magnetic compression of molecules
• Molecular Asymmetry and Optical Cycling: Laser Cooling Asymmetric Top Molecules
• A robust entangling gate for polar molecules using magnetic and microwave fields
• Prospects for Quantum Computing with an Array of Ultracold Polar Paramagnetic Molecules
• Implementation of Quantum Logic Gates Using Polar Molecules in Pendular States
• Entanglement of polar symmetric top molecules as candidate qubits
• Dynamics of ultracold molecules in confined geometry and electric field
• A quasiclassical method for calculating the density of states of ultracold collision complexes
• Electric field suppression of ultracold confined chemical rates
• Quantum computing implementations with neutral particles
• Entanglement of polar molecules in pendular states
• Asymmetric blockade and multi-qubit gates via dipole-dipole interactions
• Quantum phase gate and controlled entanglement with polar molecules
• Universalities in ultracold reactions of alkali polar molecules
• High Phase-Space Density of Laser-Cooled Molecules in an Optical Lattice
• Quantum Simulations of Extended Hubbard Models with Dipolar Crystals
• Effective magnetic fields for stationary light
• Quantum computing with a single molecular ensemble and a Cooper pair box
• Infrared-dressed entanglement of cold open-shell polar molecules for universal matchgate quantum computing
• Polarization Enhanced Deep Optical Dipole Trapping of $\Lambda$-cooled Polar Molecules
• Resonant dipolar collisions of ultracold molecules induced by microwave dressing
• Structure and thermochemistry of K${}_2$Rb, KRb${}_2$ and K${}_2$Rb${}_2$
• Efficient formation of ground state ultracold molecules via STIRAP from the continuum at a Feshbach resonance
• Hyperfine structure of alkali-metal diatomic molecules
• Franck-Condon tuning of optical cycling centers by organic functionalization
• Sub-millisecond Entanglement and iSWAP Gate between Molecular Qubits
• Long-lived complexes and signatures of chaos in ultracold K2+Rb collisions
• Influence of a Feshbach resonance on the photoassociation of LiCs
• Enriching the quantum toolbox of ultracold molecules with Rydberg atoms
• Enhanced quantum control of individual ultracold molecules using optical tweezer arrays
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• 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
• Microwave shielding with far-from-circular polarization
• Toward scalable information processing with ultracold polar molecules in an electric field: a numerical investigation
• Identification of Deeply Bound Heteronuclear Molecules Using Pulsed Laser Depletion Spectroscopy
• Rydberg atom mediated non-destructive readout of collective rotational states in polar molecule arrays
• Spectroscopy on the $A^1\Pi \leftarrow X^1{\Sigma }^{+}$ Transition of Buffer-Gas Cooled AlCl
• Entanglement Switch for Dipole Arrays
• Feshbach resonances in ultracold ^{6,7}Li + ^{23}Na atomic mixtures
• Controlling the ac Stark effect of RbCs with dc electric and magnetic fields
• Rydberg atom mediated polar molecule interactions: a tool for molecular-state conditional quantum gates and individual addressability
• Preparation of one ${}^{87}$Rb and one ${}^{133}$Cs atom in a single optical tweezer
• Single photon nonlinearities using arrays of cold polar molecules
• Evaporative cooling of reactive polar molecules confined in a two-dimensional geometry
• Long-range and frustrated spin-spin interactions in crystals of cold polar molecules
• Magneto-optical trapping of a heavy polyatomic molecule for precision measurement
• Singlet Pathway to the Ground State of Ultracold Polar Molecules
• Complexes formed in collisions between ultracold alkali-metal diatomic molecules and atoms
• Magic Conditions for Multiple Rotational States of Bialkali Molecules in Optical Lattices
• Structure and melting behavior of classical bilayer crystals of dipoles
• Optimal trapping wavelengths of Cs${}_2$ molecules in an optical lattice
• Impact of Electric Fields on Highly Excited Rovibrational States of Polar Dimers
• Enhancing dipolar interactions between molecules using state-dependent optical tweezer traps
• Probing ultracold chemistry using ion spectrometry
• Long range forces between polar alkali diatoms aligned by external electric fields
• Coherent Manipulation of the Internal State of Ultracold ${}^{87}$Rb${}^{133}$Cs Molecules with Multiple Microwave Fields
• Collisional Aspects of Bosonic and Fermionic Dipoles in Quasi-Two-Dimensional Confining Geometries
• Interspecies collision-induced losses in a dual species 7Li-85Rb magneto-optical trap
• Controllable binding of polar molecules and meta-stability of 1-D gases with attractive dipole forces
• Robust nuclear spin entanglement via dipolar interactions in polar molecules
• Shielding collisions of ultracold CaF molecules with static electric fields
• Phase gate and readout with an atom/molecule hybrid platform
• Quantum gate using qubit states separated by terahertz
• 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
• Ultralong-range Rydberg bi-molecules
• Electric-field-controlled cold dipolar collisions between trapped CH${}_3$F molecules
• Theory of cavity-assisted microwave cooling of polar molecules
• Laser control of ultracold molecule formation: The case of RbSr
• Controlling the dynamics of ultracold polar molecules in optical tweezers
• Feshbach-optimized photoassociation of ultracold ${}^6$Li${}^{87}$Rb molecules with short pulses
• Bell-type inequalities for cold heteronuclear molecules
• Polarizability of ultracold ${\text{Rb}}_2$ molecules in the rovibrational ground state of ${\mathrm{a}}^3{\Sigma }_u^{+}$
• Short-range Photoassociation of LiRb
• Microwave trap for atoms and molecules
• Photoassociation of ultracold long-range polyatomic molecules
• General classification of qubit encodings in ultracold diatomic molecules
• Resonant enhancement of ultracold photoassociation rate by electric field induced anisotropic interaction
• Formation of Ultracold Heteronuclear Dimers in Electric Fields
• Comparative study of the rovibrational properties of heteronuclear alkali dimers in electric fields
• Jost function description of near threshold resonances for coupled-channel scattering
• Fully saturated hydrocarbons as hosts of optical cycling centers
• Study of dipole moments of LiSr and KRb molecules by quantum Monte Carlo methods
• Ion-assisted ground-state cooling of a trapped polar molecule
• A general approach to state-dependent optical tweezer traps for polar molecules
• Ultracold atom-dimer long-range interactions beyond the $1/R^n$ expansion
• Anisotropic Polarizability of Ultracold Ground-state ${}^{23}$Na${}^{87}$Rb Molecules
• Symmetry breaking in sticky collisions between ultracold molecules
• Optical stimulated slowing of polar heavy-atom molecules with a constant beat phase
• Interaction potential for NaCs for ultracold scattering and spectroscopy
• Coherence of Symmetry-Protected Rotational Qubits in Cold Polyatomic Molecules
• Total angular momentum representation for state-to-state quantum scattering of cold molecules in a magnetic field
• Hyperfine structure of the ${\mathbf{A}}^1\mathbf{\Pi }$ state of AlCl and its relevance to laser cooling and trapping
• Scheme for Deterministic Loading of Laser-Cooled Molecules into Optical Tweezers
• A Model for Scattering with Proliferating Resonances: Many Coupled Square Wells
• Near-threshold bound states of the dipole-dipole interaction
• SU($N$) symmetry with ultracold alkali dimers: weak dependence of scattering properties on hyperfine state
• The iSWAP gate with polar molecules: Robustness criteria for entangling operations
• A modular entanglement-based quantum computer architecture
• Quantum annealing with pairs of ${}^2\Sigma$ molecules as qubits
• Ultracold molecular collisions in magnetic fields: Efficient incorporation of hyperfine structure in the total rotational angular momentum representation
• Resonances in non-universal dipolar collisions
• Efficient production of polar molecular Bose-Einstein condensates via an all-optical R-type atom-molecule adiabatic passage
• Heat transfer through dipolar coupling: Sympathetic cooling without contact
• Ultracold collisions of molecules
• A low-cost four-component relativistic coupled cluster linear response theory based on perturbation sensitive natural spinors
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• Molecular Hydrogen: a benchmark system for Near Threshold Resonances at higher partial waves
• The Li + CaF $\to$ Ca + LiF chemical reaction under cold conditions
• Simulation of the elementary evolution operator with the motional states of an ion in an anharmonic trap
• Rotational properties of two interacting cold polar molecules: linear, symmetric, and asymmetric tops
• Robust storage qubits in ultracold polar molecules
• Relativistic calculations of molecular electric dipole moments of singly charged aluminium monohalides
• Exact Entanglement Dynamics of Two Spins in Finite Baths
• Nanofibre-based trap for Rb${}_2$ molecule
• Giant enhancement of photodissociation of polar dimers in electric fields
• Bell states and entanglement of two-dimensional polar molecules in electric fields
• Molecule-molecule and atom-molecule collisions with ultracold RbCs molecules
• CaF+CaF interactions in the ground and excited electronic states: implications for collisional losses
• Quantum computation with logical gates between hot systems
• Lossy Quantum Defect Theory of Ultracold Molecular Collisions
• Empirical LiK excited state potentials: connecting short range and near dissociation expansions
• Low Duty Cycle Pulsed UV Technique for Spectroscopy of Aluminum Monochloride
• Measurement of the Electric Dipole Moment of AlCl by Stark Level Spectroscopy
• Trapping polar molecules by surface acoustic waves
• Hyperfine van der Waals repulsion between open-shell polar molecules
• Automated Graph-Based Detection of Quantum Control Schemes: Application to Molecular Laser Cooling
• Ferroelectric nano-traps for polar molecules
• Narrowline Laser Cooling and Spectroscopy of Molecules via Stark States
• Optimizing Pulsed-Laser Ablation Production of AlCl Molecules for Laser Cooling
• Entanglement creation in cold molecular gases using strong laser pulses
• Scalable platform for qudit-based quantum computing using polar molecules