Entanglement creation in cold molecular gases using strong laser pulses
arXiv:1302.6444
Abstract
While many-particle entanglement can be found in natural solids and strongly interacting atomic and molecular gases, generating highly entangled states between weakly interacting particles in a controlled and scalable way presents a significant challenge. We describe here a one-step method to generate entanglement in a dilute gas of cold polar molecules. For molecules in optical traps separated by a few micrometers, we show that maximally entangled states can be created using the strong off-resonant pulses that are routinely used in molecular alignment experiments. We show that the resulting alignment-mediated entanglement can be detected by measuring laser-induced fluorescence with single-site resolution and that signatures of this molecular entanglement also appear in the microwave absorption spectra of the molecular ensemble. We analyze the robustness of these entangled molecular states with respect to intensity fluctuations of the trapping laser and discuss possible applications of the system for quantum information processing.
29 pages, 7 figures
References in corpus (53)
- Quantum entanglement
- Scaling of Entanglement close to a Quantum Phase Transitions
- A High Phase-Space-Density Gas of Polar Molecules
- Violation of Bell's inequality under strict Einstein locality conditions
- Dipole Blockade and Quantum Information Processing in Mesoscopic Atomic Ensembles
- Fast quantum gates for neutral atoms
- Quantum computation with trapped polar molecules
- Cold and Ultracold Molecules: Science, Technology, and Applications
- Scalable multi-particle entanglement of trapped ions
- Controlling Spin Exchange Interactions of Ultracold Atoms in Optical Lattices
- A toolbox for lattice spin models with polar molecules
- Observation of Rydberg blockade between two atoms
- Violation of Bell inequalities by photons more than 10 km apart
- Demonstration of a neutral atom controlled-NOT quantum gate
- Entanglement of atoms via cold controlled collisions
- Controlled Collisions for Multiparticle Entanglement of Optically Trapped Atoms
- Bell Inequalities and the Separability Criterion
- Entanglement of two individual neutral atoms using Rydberg blockade
- Single-Spin Addressing in an Atomic Mott Insulator
- Quantum entanglement in photosynthetic light harvesting complexes
- Deterministic entanglement of two trapped ions
- Demonstration of conditional gate operation using superconducting charge qubits
- Experimental Demonstration of Five-photon Entanglement and Open-destination Teleportation
- Direct Observation of Second Order Atom Tunnelling
- Controlled exchange interaction between pairs of neutral atoms in an optical lattice
- A lattice of double wells for manipulating pairs of cold atoms
- Entangled Quantum States of Magnetic Dipoles
- Ultracold heteronuclear molecules in a 3D optical lattice
- Tunable Superfluidity and Quantum Magnetism with Ultracold Polar Molecules
- Schemes for robust quantum computation with polar molecules
- Experimental Free-Space Distribution of Entangled Photon Pairs over a Noisy Ground Atmosphere of 13km
- Analysis of a quantum logic device based on dipole-dipole interactions of optically trapped Rydberg atoms
- Qubit Disentanglement and Decoherence via Dephasing
- Long-lived dipolar molecules and Feshbach molecules in a 3D optical lattice
- Systematic study of the Sr clock transition in an optical lattice
- Energy-time entanglement preservation in plasmon-assisted light transmission
- Entangled Mechanical Oscillators
- Preparing and probing atomic number states with an atom interferometer
- Calculations of static dipole polarizabilities of alkali dimers. Prospects for alignment of ultracold molecules
- Quantum logic via the exchange blockade in ultracold collisions
- Molecular Dipolar Crystals as High Fidelity Quantum Memory for Hybrid Quantum Computing
- Entangling Dipole-Dipole Interactions and Quantum Logic in Optical Lattices
- Quantum Computing with Neutral Atoms in an Optical Lattice
- Quantum phase gate and controlled entanglement with polar molecules
- Investigating polaron transitions with polar molecules
- Quantum diffusion with disorder, noise and interaction
- Tunable disorder in a crystal of cold polar molecules
- Dressed, noise- or disorder- resilient optical lattices
- Deeply bound ultracold molecules in an optical lattice
- Exact Calculation of Entanglement in a 19-site 2D Spin System
- Shaping interactions between polar molecules with far-off-resonant light
- Orientations of two coupled molecules
- Bell-type inequalities for cold heteronuclear molecules