Related papers: Deterministic generation of a 20-qubit two-dimensional photonic cluster state

Deterministic generation of a 20-qubit two-dimensional photonic cluster state

URL: http://arxiv.org/abs/2409.06623v1
Date: Tue, 10 Sep 2024 16:25:24 GMT
Title: Deterministic generation of a 20-qubit two-dimensional photonic cluster state
Authors: James O'Sullivan, Kevin Reuer, Aleksandr Grigorev, Xi Dai, Alonso Hernández-Antón, Manuel H. Muñoz-Arias, Christoph Hellings, Alexander Flasby, Dante Colao Zanuz, Jean-Claude Besse, Alexandre Blais, Daniel Malz, Christopher Eichler, Andreas Wallraff,
Abstract summary: We present a device capable of emitting large-scale entangled microwave photonic states in a two dimensional ladder structure. By interleaving two-qubit gates with controlled photon emission, we generate 2 x n grids of time- and frequency-multiplexed cluster states of itinerant microwave photons. We measure a signature of localizable entanglement across up to 20 photonic qubits.
Score: 87.34681687753141
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Multidimensional cluster states are a key resource for robust quantum communication, measurement-based quantum computing and quantum metrology. Here, we present a device capable of emitting large-scale entangled microwave photonic states in a two dimensional ladder structure. The device consists of a pair of coupled superconducting transmon qubits which are each tuneably coupled to a common output waveguide. This architecture permits entanglement between each transmon and a deterministically emitted photonic qubit. By interleaving two-qubit gates with controlled photon emission, we generate 2 x n grids of time- and frequency-multiplexed cluster states of itinerant microwave photons. We measure a signature of localizable entanglement across up to 20 photonic qubits. We expect the device architecture to be capable of generating a wide range of other tensor network states such as tree graph states, repeater states or the ground state of the toric code, and to be readily scalable to generate larger and higher dimensional states.

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