A scheme to create and verify scalable entanglement in optical lattice

Abstract

To achieve scalable quantum information processing, great efforts have been devoted to the creation of large-scale entangled states in various physical systems. Ultracold atom in optical lattice is considered as one of the promising platforms due to its feasible initialization and parallel manipulation. In this work, we propose an efficient scheme to generate and characterize global entanglement in the optical lattice. With only two-layer quantum circuits, the generation utilizes two-qubit entangling gates based on the superexchange interaction in double wells. The parallelism of these operations enables the generation to be fast and scalable. To verify the entanglement of this non-stabilizer state, we mainly design three complementary detection protocols which are less resource-consuming compared to the full tomography. In particular, one just needs two homogenous local measurement settings to identify the entanglement property. Our entanglement generation and verification protocols provide the foundation for the further quantum information processing in optical lattice.

13 pages, 5 figures

References in corpus (27)

• Supplementary information for "Quantum supremacy using a programmable superconducting processor"
• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
• Entanglement detection
• Single-Atom Resolved Fluorescence Imaging of an Atomic Mott Insulator
• 14-qubit entanglement: creation and coherence
• Experimental Quantum State Tomography of Optical Fields and Ultrafast Statistical Sampling
• Programmable quantum simulation of 2D antiferromagnets with hundreds of Rydberg atoms
• Single-Spin Addressing in an Atomic Mott Insulator
• Time-resolved Observation and Control of Superexchange Interactions with Ultracold Atoms in Optical Lattices
• Controlled exchange interaction between pairs of neutral atoms in an optical lattice
• Experimental Quantum Computations on a Topologically Encoded Qubit
• A Quantum Gas Microscope for Fermionic Atoms
• A lattice of double wells for manipulating pairs of cold atoms
• Detecting Genuine Multipartite Entanglement with Two Local Measurements
• Entanglement Certification $-$ From Theory to Experiment
• Entanglement Detection in the Stabilizer Formalism
• Permutationally invariant quantum tomography
• Microwave-engineering of programmable XXZ Hamiltonians in arrays of Rydberg atoms
• Sublattice addressing and spin-dependent motion of atoms in a double-well lattice
• Toolbox for entanglement detection and fidelity estimation
• Controlling and Detecting Spin Correlations of Ultracold Atoms in Optical lattices
• Spin-dependent Optical Superlattice
• Practical methods for witnessing genuine multi-qubit entanglement in the vicinity of symmetric states
• Creation of resilient entangled states and a resource for measurement-based quantum computation with optical superlattices
• Efficient and robust detection of multipartite Greenberger-Horne-Zeilinger-like states
• Decomposition of symmetric multipartite observable
• Efficient entanglement generation and detection of generalized stabilizer states

Cited by in corpus (4)

• Functional building blocks for scalable multipartite entanglement in optical lattices
• Efficient Characterizations of Multiphoton States with an Ultra-thin Optical Device
• Quantum channels and some absolute properties of quantum states
• Protected quantum gates using qubit doublons in dynamical optical lattices