Searched for: author%3A%22Humphreys%2C+P.C.%22
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Hermans, S.L.N. (author), Pompili, M. (author), Baier, S. (author), Beukers, H.K.C. (author), Humphreys, P.C. (author), Schouten, R.N. (author), Vermeulen, R.F.L. (author), Tiggelman, M.J. (author), Dos Santos Martins, L. (author), Dirkse, B. (author), Borregaard, J. (author), Wehner, S.D.C. (author), Hanson, R. (author)
We report on the realization of a multi-node quantum network. Using the network, we have demonstrated three protocols; generation of a entangled state shared by all nodes, entanglement swapping and quantum teleportation between non-neighboring nodes.
conference paper 2023
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Pompili, M. (author), Hermans, S.L.N. (author), Baier, S. (author), Beukers, H.K.C. (author), Humphreys, P.C. (author), Schouten, R.N. (author), Vermeulen, R.F.L. (author), Tiggelman, M.J. (author), Dos Santos Martins, L. (author), Dirkse, B. (author), Wehner, S.D.C. (author), Hanson, R. (author)
The distribution of entangled states across the nodes of a future quantum internet will unlock fundamentally new technologies. Here, we report on the realization of a three-node entanglement-based quantum network. We combine remote quantum nodes based on diamond communication qubits into a scalable phase-stabilized architecture, supplemented...
journal article 2021
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Rozpedek, F.D. (author), Yehia, R. (author), Goodenough, K.D. (author), Ruf, M.T. (author), Humphreys, P.C. (author), Hanson, R. (author), Wehner, S.D.C. (author), Elkouss Coronas, D. (author)
Quantum channels enable the implementation of communication tasks inaccessible to their classical counterparts. The most famous example is the distribution of secret key. However, in the absence of quantum repeaters, the rate at which these tasks can be performed is dictated by the losses in the quantum channel. In practice, channel losses...
journal article 2019
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Tchebotareva, A. (author), Hermans, S.L.N. (author), Humphreys, P.C. (author), Voigt, D. (author), Harmsma, P.J. (author), Cheng, Lun K. (author), Verlaan, Ad L. (author), Dijkhuizen, Niels (author), De Jong, Wim (author), Dréau, A.E. (author), Hanson, R. (author)
We report on the realization and verification of quantum entanglement between a nitrogen-vacancy electron spin qubit and a telecom-band photonic qubit. First we generate entanglement between the spin qubit and a 637 nm photonic time-bin qubit, followed by photonic quantum frequency conversion that transfers the entanglement to a 1588 nm...
journal article 2019
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Kalb, N. (author), Humphreys, P.C. (author), Slim, J. J. (author), Hanson, R. (author)
We probe dephasing mechanisms within a quantum network node consisting of a single nitrogen-vacancy center electron spin that is hyperfine coupled to surrounding C13 nuclear-spin quantum memories. Previous studies have analyzed memory dephasing caused by the stochastic electron-spin reset process, which is a component of optical internode...
journal article 2018
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Humphreys, P.C. (author), Kalb, N. (author), Morits, J.P.J. (author), Schouten, R.N. (author), Vermeulen, R.F.L. (author), Twitchen, Daniel J. (author), Markham, Matthew (author), Hanson, R. (author)
Large-scale quantum networks promise to enable secure communication, distributed quantum computing, enhanced sensing and fundamental tests of quantum mechanics through the distribution of entanglement across nodes <sup>1-7</sup>. Moving beyond current two-node networks <sup>8-13</sup> requires the rate of entanglement generation between nodes...
journal article 2018
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van Dam, S.B. (author), Humphreys, P.C. (author), Rozpedek, F.D. (author), Wehner, S.D.C. (author), Hanson, R. (author)
Quantum networks distributed over distances greater than a few kilometres will be limited by the time required for information to propagate between nodes. We analyse protocols that are able to circumvent this bottleneck by employing multi-qubit nodes and multiplexing. For each protocol, we investigate the key network parameters that determine...
journal article 2017
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Kalb, N. (author), Reiserer, A.A. (author), Humphreys, P.C. (author), Bakermans, J.J.W. (author), Kamerling, S. J. (author), Nickerson, N. H. (author), Benjamin, S. C. (author), Twitchen, Daniel J. (author), Markham, M (author), Hanson, R. (author)
The impact of future quantum networks hinges on high-quality quantum entanglement shared between network nodes. Unavoidable imperfections necessitate a means to improve remote entanglement by local quantum operations. We realize entanglement distillation on a quantum network primitive of distant electron-nuclear two-qubit nodes. The heralded...
journal article 2017
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