Preparation of Decoherence Free Cluster States with Optical Superlattices

Abstract

We present a protocol to prepare decoherence free cluster states using ultracold atoms loaded in a two dimensional superlattice. The superlattice geometry leads to an array of 2*2 plaquettes, each of them holding four spin-1/2 particles that can be used for encoding a single logical qubit in the two-fold singlet subspace, insensitive to uniform magnetic field fluctuations in any direction. Dynamical manipulation of the supperlattice yields distinct inter and intra plaquette interactions and permits to realize one qubit and two qubit gates with high fidelity, leading to the generation of universal cluster states for measurement based quantum computation. Our proposal based on inter and intra plaquette interactions also opens the path to study polymerized Hamiltonians which support ground states describing arbitrary quantum circuits.

arXiv comment17 pages, 12 figures

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Cited by in corpus (17)

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• Entanglement Sudden Death as an Indicator of Fidelity in a Four-Qubit Cluster State
• Optimal protocols for quantum metrology with noisy measurements
• High-fidelity cluster state generation for ultracold atoms in an optical lattice
• Superconductivity in strongly repulsive fermions: the role of kinetic-energy frustration
• Two-qubit gates for decoherence-free qubits using a ring exchange interaction
• Error-correcting one-way quantum computation with global entangling gates
• SnCQA: A hardware-efficient equivariant quantum convolutional circuit architecture
• Generalized Interaction-Free Evolutions
• Scalable quantum computation architecture using always-on Ising interactions via quantum feedforward
• Singlet-only Always-on Gapless Exchange Qubits with Baseband Control
• Generating scalable entanglement of ultracold bosons in superlattices through resonant shaking
• Isolated Structures in Two-Dimensional Optical Superlattice