Commensurate and incommensurate 1D interacting quantum systems
Di Carli, Andrea and Parsonage, Christopher and La Rooij, Arthur and Koehn, Lennart and Ulm, Clemens and Duncan, Callum and Daley, Andrew and Haller, Elmar and Kuhr, Stefan (2024) Commensurate and incommensurate 1D interacting quantum systems. Nature Communications, 15 (1). 474. ISSN 2041-1723 (https://doi.org/10.1038/s41467-023-44610-3)
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Abstract
Single-atom imaging resolution of many-body quantum systems in optical lattices is routinely achieved with quantum-gas microscopes. Key to their great versatility as quantum simulators is the ability to use engineered light potentials at the microscopic level. Here, we employ dynamically varying microscopic light potentials in a quantum-gas microscope to study commensurate and incommensurate 1D systems of interacting bosonic Rb atoms. Such incommensurate systems are analogous to doped insulating states that exhibit atom transport and compressibility. Initially, a commensurate system with unit filling and fixed atom number is prepared between two potential barriers. We deterministically create an incommensurate system by dynamically changing the position of the barriers such that the number of available lattice sites is reduced while retaining the atom number. Our systems are characterised by measuring the distribution of particles and holes as a function of the lattice filling, and interaction strength, and we probe the particle mobility by applying a bias potential. Our work provides the foundation for preparation of low-entropy states with controlled filling in optical-lattice experiments.
ORCID iDs
Di Carli, Andrea ORCID: https://orcid.org/0000-0003-0377-6886, Parsonage, Christopher, La Rooij, Arthur, Koehn, Lennart, Ulm, Clemens, Duncan, Callum ORCID: https://orcid.org/0000-0003-3625-9842, Daley, Andrew ORCID: https://orcid.org/0000-0001-9005-7761, Haller, Elmar ORCID: https://orcid.org/0000-0002-7951-1721 and Kuhr, Stefan ORCID: https://orcid.org/0000-0001-8386-5357;-
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Item type: Article ID code: 87935 Dates: DateEvent11 January 2024Published11 January 2024Published Online19 December 2023AcceptedSubjects: Science > Physics Department: Faculty of Science > Physics
Strategic Research Themes > Measurement Science and Enabling TechnologiesDepositing user: Pure Administrator Date deposited: 26 Jan 2024 15:25 Last modified: 30 Nov 2024 14:25 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/87935