Scalable Generation of Graph-State Entanglement through Realistic Linear Optics

Abstract

We propose a scheme for efficient construction of graph states using realistic linear optics, imperfect photon source and single-photon detectors. For any many-body entanglement represented by tree graph states, we prove that the overall preparation and detection efficiency scales only polynomially with the size of the graph, no matter how small the efficiencies for the photon source and the detectors.

4 pages, 3 figures

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• Efficient and long-lived quantum memory with cold atoms inside a ring cavity
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• Resource costs for fault-tolerant linear optical quantum computing
• Fusing multiple W states simultaneously with a Fredkin gate
• Experimental Realization of a Controlled-NOT Gate with Four-Photon Six-Qubit Cluster States
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• The efficiencies of generating cluster states with weak non-linearities
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• One-way quantum computation with two-photon multiqubit cluster states
• Experimental Quantum Teleportation and Multi-Photon Entanglement via Interfering Narrowband Photon Sources
• Photonic implementation of quantum information masking
• Experimental characterization of universal one-way quantum computing
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• Photonic multipartite entanglement conversion using nonlocal operations
• Long range failure-tolerant entanglement distribution
• Hard limits on the postselectability of optical graph states
• Weaving independently generated photons into an arbitrary graph state
• A scheme for tunable quantum phase gate and effective preparation of graph-state entanglement
• Experimental characterization of photonic fusion using fiber sources
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• Deterministic generation of qudit photonic graph states from quantum emitters
• Linear optical quantum computation with imperfect entangled photon-pair sources and inefficient non-photon-number-resolving detectors
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• Hybrid Quantum Computation
• Extracting perfect GHZ states from imperfect weighted graph states via entanglement concentration
• Physical Realization of Measurement Based Quantum Computation
• Quantum-Memory-Enhanced Preparation of Nonlocal Graph States
• Eliminating temporal correlation in quantum-dot entangled photon source by quantum interference
• Scalable nuclear-spin entanglement mediated by a mechanical oscillator
• Calculating the Green's function of two-site Fermionic Hubbard model in a photonic system
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• Hybrid Exchange Measurement-Based Qubit Operations in Semiconductor Double Quantum Dot Qubits
• Efficient graph state generation and artificial error detection
• Deterministic Dense Coding and Faithful Teleportation with Multipartite Graph States
• Improving noise threshold for optical quantum computing with the EPR photon source
• Identifying non-k-separability of a class of N-qubit complete graph states using correlation tensors