Engineering tunable local loss in a synthetic lattice of momentum states
| Autor: | Fangzhao Alex An, Samantha Lapp, Bryce Gadway, Jackson Ang'ong'a |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Quantum Physics FOS: Physical sciences General Physics and Astronomy Quantum simulator Dissipation 01 natural sciences 010305 fluids & plasmas Quantum Gases (cond-mat.quant-gas) Quantum state Lattice (order) 0103 physical sciences Dissipative system Spontaneous emission Statistical physics Condensed Matter - Quantum Gases Quantum Physics (quant-ph) 010306 general physics Quantum Quantum tunnelling |
| Zdroj: | New Journal of Physics. 21:045006 |
| ISSN: | 1367-2630 |
| DOI: | 10.1088/1367-2630/ab1147 |
| Popis: | Dissipation can serve as a powerful resource for controlling the behavior of open quantum systems.Recently there has been a surge of interest in the influence of dissipative coupling on large quantum systems and, more specifically, how these processes can influence band topology and phenomena like many-body localization. Here, we explore the engineering of local, tunable dissipation in so-called synthetic lattices, arrays of quantum states that are parametrically coupled in a fashion analogous to quantum tunneling. Considering the specific case of momentum-state lattices, we investigate two distinct mechanisms for engineering controlled loss: one relying on an explicit form of dissipation by spontaneous emission, and another relying on reversible coupling to a large reservoir of unoccupied states. We experimentally implement the latter and demonstrate the ability to tune the local loss rate over a large range. The introduction of controlled loss to the synthetic lattice toolbox promises to pave the way for studying the interplay of dissipation with topology, disorder, and interactions. Comment: 8 pages, 3 figures |
| Databáze: | OpenAIRE |
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