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Sökning: WFRF:(McCutcheon Will)

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1.
  • Goel, Suraj, et al. (författare)
  • Inverse design of high-dimensional quantum optical circuits in a complex medium
  • Ingår i: Nature Physics. - 1745-2473.
  • Tidskriftsartikel (refereegranskat)abstract
    • Programmable optical circuits are an important tool in developing quantum technologies such as transceivers for quantum communication and integrated photonic chips for quantum information processing. Maintaining precise control over every individual component becomes challenging at large scales, leading to a reduction in the quality of operations performed. In parallel, minor imperfections in circuit fabrication are amplified in this regime, dramatically inhibiting their performance. Here we use inverse design techniques to embed optical circuits in the higher-dimensional space of a large, ambient mode mixer such as a commercial multimode fibre. This approach allows us to forgo control over each individual circuit element, and retain a high degree of programmability. We use our circuits as quantum gates to manipulate high-dimensional spatial-mode entanglement in up to seven dimensions. Their programmability allows us to turn a multimode fibre into a generalized multioutcome measurement device, allowing us to both transport and certify entanglement within the transmission channel. With the support of numerical simulations, we show that our method is a scalable approach to obtaining high circuit fidelity with a low circuit depth by harnessing the resource of a high-dimensional mode mixer.
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2.
  • Goel, Suraj, et al. (författare)
  • Inverse-Design of High-Dimensional Quantum Optical Circuits in a Complex Medium
  • 2023
  • Ingår i: Frontiers in Optics : Proceedings Frontiers in Optics + Laser Science 2023, FiO, LS 2023 - Proceedings Frontiers in Optics + Laser Science 2023, FiO, LS 2023. - 9781957171296
  • Konferensbidrag (refereegranskat)abstract
    • We program high-dimensional linear optical circuits within a commercial multi-mode fibre, turning it into a generalised multi-outcome measurement device, which allows us to both transport and certify high-dimensional entanglement within the transmission channel itself.
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3.
  • Joshi, Siddarth Koduru, et al. (författare)
  • Space QUEST mission proposal : experimentally testing decoherence due to gravity
  • 2018
  • Ingår i: New Journal of Physics. - : IOP Publishing. - 1367-2630. ; 20
  • Tidskriftsartikel (refereegranskat)abstract
    • Models of quantum systems on curved space-times lack sufficient experimental verification. Some speculative theories suggest that quantum correlations, such as entanglement, may exhibit different behavior to purely classical correlations in curved space. By measuring this effect or lack thereof, we can test the hypotheses behind several such models. For instance, as predicted by Ralph et al [5] and Ralph and Pienaar [1], a bipartite entangled system could decohere if each particle traversed through a different gravitational field gradient. We propose to study this effect in a ground to space uplink scenario. We extend the above theoretical predictions of Ralph and coworkers and discuss the scientific consequences of detecting/failing to detect the predicted gravitational decoherence. We present a detailed mission design of the European Space Agency's Space QUEST (Space-Quantum Entanglement Space Test) mission, and study the feasibility of the mission scheme.
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  • Resultat 1-3 av 3

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