4.8 Article

Dissipative Binding of Lattice Bosons through Distance-Selective Pair Loss

Journal

PHYSICAL REVIEW LETTERS
Volume 109, Issue 23, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.109.233003

Keywords

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Funding

  1. EPSRC [EP/I017828/1]
  2. Leverhulme Trust [F/00114/BG]
  3. Fundacion Ramon Areces
  4. Alexander von Humboldt Foundation
  5. Engineering and Physical Sciences Research Council [EP/I017828/1] Funding Source: researchfish
  6. EPSRC [EP/I017828/1] Funding Source: UKRI

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We show that in a gas of ultracold atoms distance selective two-body loss can be engineered via the resonant laser excitation of atom pairs to interacting electronic states. In an optical lattice this leads to a dissipative master equation dynamics with Lindblad jump operators that annihilate atom pairs with a specific interparticle distance. In conjunction with coherent hopping between lattice sites this unusual dissipation mechanism leads to the formation of coherent long-lived complexes that can even exhibit an internal level structure which is strongly coupled to their external motion. We analyze this counterintuitive phenomenon in detail in a system of hard-core bosons. While current research has established that dissipation in general can lead to the emergence of coherent features in many-body systems our work shows that strong nonlocal dissipation can effectuate a binding mechanism for particles.

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