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Synthetic dimensions for topological and quantum phases
Submission status
Open
Submission deadline
The idea of synthetic dimensions is to use non-spatial degrees of freedom as dimensions to realize and study models of interest in high dimensions using low dimensional setups. Of particular interest in synthetic dimensions is to realize and study topological models and quantum phases which are otherwise difficult to realize in experiments. Various systems where synthetic dimensions have been proposed or realized include photonics and ultracold as well as room-temperature gases. Synthetic dimensions not only allow us to deepen our understanding of the models and phenomena but also provide us with novel ways to manipulate light and matter in multiple degrees of freedom for future technology.
This Focus Collection aims to present the most recent advances and future directions in exploring novel physics of topological and quantum phases with synthetic dimensions.
Examples of synthetic dimensions this Collection intends to cover include, but are not restricted to, spin of atoms, angular momentum of light, frequency modes of resonators and waveguides, momentum space, and time. The Collection also aims to include external parameter space, as in topological charge pumping, within the scope to have a broad perspective on synthetic dimensions.
The common probes for cold atoms systems are typically global and do not provide direct information on the local spatial structure of states, limiting the insight on disordered and quasiperiodic systems. The authors demonstrate a local probe able to distinguish metallic and insulating states in an energy-resolved manner.
Synthetic dimensions have drawn a lot of attention in photonics recently, where many physical phenomena have been explored. This work, on the other hand, utilizes the temporal synthetic dimension to solve a technical problem that is otherwise challenging, and showcases the generation of tera-sample-per-second arbitrary waveforms with extreme flexibility, which offers new possible solutions in many application-related problems.