Quantum dot molecule devices with optical control of charge status and electronic control of coupling

Bopp, Frederik; Rojas, Jonathan; Revenga, Natalia; Riedl, Hubert; Sbresny, Friedrich; Boos, Katarina; Simmet, Tobias; Ahmadi, Majid; Gershoni, D.; Kasprzak, Jacek; Ludwig, Arne; Reitzenstein, Stephan; Wieck, A. D.; Reuter, D.; Muller, Kai; Finley, Jonathan J.

doi:10.48550/arxiv.2205.10001

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“…An approach to using photons from QDs in quantum computing is to generate cluster-states of photons through interaction with local spins. There are proposals on how to extend this to higher-dimensional cluster states using singlet-triplet states in QD molecules [135], where first experimental results on controlling the system have been obtained [136].…”

Section: Statusmentioning

confidence: 99%

2023 roadmap for materials for quantum technologies

Becher

Gao

Kar

et al. 2023

Mater. Quantum. Technol.

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Quantum technologies are poised to move the foundational principles of quantum physics to the forefront of applications. This roadmap identifies some of the key challenges and provides insights on materials innovations underlying a range of exciting quantum technology frontiers. Over the past decades, hardware platforms enabling different quantum technologies have reached varying levels of maturity. This has allowed for first proof-of-principle demonstrations of quantum supremacy, for example quantum computers surpassing their classical counterparts, quantum communication with reliable security guaranteed by laws of quantum mechanics, and quantum sensors uniting the advantages of high sensitivity, high spatial resolution, and small footprints. In all cases, however, advancing these technologies to the next level of applications in relevant environments requires further development and innovations in the underlying materials. From a wealth of hardware platforms, we select representative and promising material systems in currently investigated quantum technologies. These include both the inherent quantum bit systems as well as materials playing supportive or enabling roles, and cover trapped ions, neutral atom arrays, rare earth ion systems, donors in silicon, color centers and defects in wide-band gap materials, two-dimensional materials and superconducting materials for single-photon detectors. Advancing these materials frontiers will require innovations from a diverse community of scientific expertise, and hence this roadmap will be of interest to a broad spectrum of disciplines.

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Section: Statusmentioning

confidence: 99%