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THU: Thursday Contributed Sessions
THU 1: Fault-Tolerant Quantum Computing: Contributed Session (Quantum Error Correction)
THU 1.6: Talk
Thursday, September 11, 2025, 15:30–15:45, ZHG001
Bosonic quantum error correction with neutral atoms in optical dipole traps — •David F. Locher1,2, Leon H. Bohnmann1,2, Johannes Zeiher3,4, and Markus Müller1,2 — 1Institut für Quanteninformation, RWTH Aachen University, Germany — 2Peter Grünberg Institut (PGI-2), Forschungszentrum Jülich, Germany — 3Ludwig-Maximilians-Universität München, Germany — 4Max-Planck-Institut für Quantenoptik, Garching, Germany
An atom trapped in an optical tweezer or optical lattice exhibits vibrational modes. In the present work [1] we analyse an experimentally motivated approach to encode quantum information in the vibrational motion of trapped neutral atoms. Specifically, we investigate the realisation of Gottesman-Kitaev-Preskill (GKP) code states [2]. We discuss the feasibility of our idea in realistic setups and we devise protocols for encoding and error correction of GKP states that are compatible with state-of-the-art experimental setups. The key element of our protocols is the controlled coupling of atomic motion to the atom’s internal electronic states, which has recently been achieved in arrays of trapped atoms. We lay out that an optical lattice augmented with dynamical optical tweezers is a favourable setup whose experimental feasibility we confirm in numerical simulations. Our work therefore constitutes a significant step towards the first experimental realisation of GKP states in the motion of trapped neutral atoms.
[1] Bohnmann, Locher, Zeiher, Müller, Phys. Rev. A 111 022432 (2025)
[2] Gottesman, Kitaev, Preskill, Phys. Rev. A 64 012310 (2001)
Keywords: Quantum error correction; Trapped atoms; Optical Lattices and Traps; Continuous variable quantum information processing