Freiburg 2024 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 37: Poster III

Q 37.4: Poster

Wednesday, March 13, 2024, 17:00–19:00, Tent B

Dissipative stabilization of molecular rotational states against blackbody radiation and spontaneous decay — •Brandon Furey, Mariano Monsalve, Zhenlin Wu, Stefan Walser, Elyas Mattivi, Rene Nardi, and Philipp Schindler — Universität Innsbruck

Novel quantum information encoding schemes are possible in the rotational degrees of freedom in molecules which are not available in atoms.[1] However, these codes are vulnerable to rotational transitions induced by the environment; namely, blackbody radiation and spontaneous decays. Encoding in a single rotational manifold may enable protection against such decoherence.[2] Theoretically, we are developing a dissipative quantum error correction (QEC) scheme which can be continuously applied to stabilize a rotational superposition.

Experimentally, we aim to demonstrate state preparation, coherent control, and the creation of superpositions of rotational states in CaH⁺ or CaOH⁺ molecular ions using Raman setups with two CW laser beams and another with an optical frequency comb.[3] This could pave the way for exploring QEC codes based on trapped molecular ions.

[1] V. Albert, et al. Phys. Rev. X 10, 031050 (2020)

[2] S. Jain, et al. arXiv:2311.12324 [quant-ph] (2023)

[3] C. Chou, et al. Science 367, 1458 (2020)

Keywords: rotational states; molecular ions; quantum error correction