Revision 1

Accepted · first revision · record

Title: The non-Hermitian skin effect with quantum jumps and interactions
Plain: With one-way loss built into a lattice, all waves pile up at one edge, an effect called the skin effect. Whether this survives when real quantum jumps and atom-atom interactions are included is open.
Precise: Atoms in a $1\mathrm{D}$ or $2\mathrm{D}$ lattice with engineered nonreciprocal dissipative hopping, evolving under a Lindblad master equation. The effective non-Hermitian Hamiltonian $H_{\mathrm{eff}}$ predicts boundary localization of all modes. Determine whether the full Lindblad dynamics of interacting bosons or fermions shows boundary accumulation with the $H_{\mathrm{eff}}$ length scale, and how quantum jumps and Pauli blocking modify it. Answer: mechanism and measured localization length.
Settled by: An experiment with interacting atoms resolving density profiles under nonreciprocal dissipation, compared with full Lindblad simulation.
Kind: well-posed
Answer type: mechanism
References: (empty)
Literature status: partially-resolved
Status note: A single-particle skin effect was observed in an atomic momentum-space lattice in 2022 (Liang et al., PRL), and a 2D skin effect in a weakly interacting ultracold Fermi gas was reported in 2025 (Zhao et al., Nature, doi:10.1038/s41586-024-08347-3); interaction and quantum-jump effects remain unmeasured.
Posed since: (empty)