Deterministic generation of a 20-qubit two-dimensional photonic cluster state
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arXiv
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| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866915407036678144 |
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| author | O'Sullivan, James Reuer, Kevin Grigorev, Aleksandr Dai, Xi Hernández-Antón, Alonso Muñoz-Arias, Manuel H. Hellings, Christoph Flasby, Alexander Zanuz, Dante Colao Besse, Jean-Claude Blais, Alexandre Malz, Daniel Eichler, Christopher Wallraff, Andreas |
| author_facet | O'Sullivan, James Reuer, Kevin Grigorev, Aleksandr Dai, Xi Hernández-Antón, Alonso Muñoz-Arias, Manuel H. Hellings, Christoph Flasby, Alexander Zanuz, Dante Colao Besse, Jean-Claude Blais, Alexandre Malz, Daniel Eichler, Christopher Wallraff, Andreas |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_06623 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Deterministic generation of a 20-qubit two-dimensional photonic cluster state O'Sullivan, James Reuer, Kevin Grigorev, Aleksandr Dai, Xi Hernández-Antón, Alonso Muñoz-Arias, Manuel H. Hellings, Christoph Flasby, Alexander Zanuz, Dante Colao Besse, Jean-Claude Blais, Alexandre Malz, Daniel Eichler, Christopher Wallraff, Andreas Quantum Physics 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. |
| title | Deterministic generation of a 20-qubit two-dimensional photonic cluster state |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2409.06623 |