Far-Field Signatures of a Two-Body Bound State in Collective Emission from Interacting Two-Level Atoms on a Lattice

Abstract

The collective emission from a one-dimensional chain of interacting two-level atoms is investigated. We calculate the light scattered by dissipative few-excitation eigenstates in the far-field, and in particular focus on signatures of a lattice two-body bound state. We present analytical results for the angle-resolved, temporal decay of the scattered light intensity. Moreover, we find that the steady-state emission spectrum that emerges when the system is probed by a weak, incoherent driving field exhibits a distinct signature for the existence of a bound state, and allows to determine the momentum distribution of the two-body relative wavefunction. Intriguingly, our study does not rely on single-atom addressability and/or manipulation techniques.

arXiv comment5 pages, 3 figures, supplement

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Cited by in corpus (5)

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• Probing few-excitation eigenstates of interacting atoms on a lattice by observing their collective light emission in the far field
• Decay rates and energies of free magnons and bound states in dissipative XXZ chains
• Phase dependence of the unnormalized second-order photon correlation function