Sprecher
Beschreibung
Understanding strongly correlated many-fermion systems remains one of the central open challenges in condensed matter physics. Quantum gas microscopes have enabled major advances in this direction by providing analog quantum simulators with single-site- and single-atom-resolved control and detection. However, compared to digital quantum information processors, analog platforms remain limited in local control and programmability.
A promising route forward is provided by hybrid approaches that combine analog simulation with digital quantum control. These paradigms aim to unite the scalability and intrinsic entanglement of analog systems with the programmability and flexibility of gate-based operations, enabling improved capabilities for state preparation and readout.
In this talk, I will present novel approaches that integrate optical lattice implementations of Fermi–Hubbard systems with programmable methods for state initialization and gate-based manipulation and readout. I will show how hybrid tweezer/lattice architectures enable the initialization of fully programmable Hubbard states in their motional ground states [1]. I will further discuss recently developed schemes based on optical superlattices that allow the construction of arbitrary single-particle unitaries [2] and provide a route toward implementing variational eigensolver protocols for molecular structure problems from quantum chemistry [3]. As a first experimental step toward gate-based manipulation of correlated fermionic states, we have recently demonstrated high-fidelity collisional gates in optical superlattices [4].
References
[1] N. Jain et al., arXiv: 2512.09849 (2026)
[2] A. Roth et al., arXiv:2603.04210 (2026)
[3] F. Gkristis et al., PRX Quantum 6, 010318 (2025)
[4] P. Bojović et al., arXiv:2506.14711 (2025)