Dresden 2026 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 20: Poster I
HL 20.60: Poster
Dienstag, 10. März 2026, 18:00–20:00, P1
2D Lattices of Rb Quantum Emitters on Isolating Substrates — •David Bergmann, Katharina Lorena Franzke, Wolf Gero Schmidt, and Uwe Gerstmann — Paderborn University, Paderborn, Germany
Entanglement plays a decisive role in modern application of quantum information, such as memory atoms and quantum emitters. The central challenge in this context is to address, control and protect systems of many qubits against decoherence.[1] Recently, efficient generation of entangled multiphoton graphs from single 87Rb atoms was reported, overcoming the limitations encountered by probabilistic schemes.[2]
In this theoretical work, we investigate the applicability of different isolating materials to be used as substrate for a 2D lattice or clusters of 87Rb atoms. In contrast to MgO, frequently used in previous investigations [3], NaCl was found to be a substrate that minimizes substrate-mediated interaction between neighboring Rb atoms. It is thus expected to allow entanglement of several individual atoms as single emitters in the same cavity. Therefore, the system Rb/NaCl promises improved scalability and opens new possibilities for quantum computation and communications.
[1] J. Preskill et al., Quantum 2, 79 (2018).
[2] P. Thomas et al., Nature 608, 677–681 (2022).
[3] R. Broekhoven et al., npj Quantum Information 10, 92 (2024)
Keywords: quantum emitters; Rb qubits; entanglement; isolating substrates; NaCl
