Collectively pair-driven-dissipative bosonic arrays: exotic and self-oscillatory condensates

Abstract:Modern quantum platforms such as superconducting circuits offer exciting opportunities for the experimental exploration of driven-dissipative many-body systems in unconventional regimes. One such regime arises in bosonic systems, where driving and dissipation can nowadays be engineered through pairs of excitations, rather than through conventional single-excitation or linear processes. These platforms also enable collective rather than local pair loss, so that excitations emitted into the environment originate from a coherent superposition of lattice sites rather than any specific site. In this work, we analyze the superfluid phases accessible to bosonic arrays subject to these novel mechanisms, which are more characteristic of quantum optics, and show that they lead to remarkable spatiotemporal properties beyond the traditional scope of pattern formation in either condensed-matter systems or nonlinear optics alone. In particular, we show that, even in the presence of residual local loss, the system is stabilized into an exotic state in which bosons condense along the modes of a closed manifold in Fourier space. A weak bias drive controls the population distribution across these modes, providing access to a wealth of patterns: from periodic and quasiperiodic structures with tunable spatial wavelengths to condensates that uniformly populate the closed Fourier manifold. Furthermore, when residual local linear dissipation is balanced by pumping, new constants of motion emerge that can force the superfluid to oscillate in time, through a mechanism analogous to that underlying recently discovered superfluid time crystals. Finally, we propose a specific experimental implementation for exploring this rich and unusual spatiotemporal superfluid behavior.

Quantum Gases (cond-mat.quant-gas); Pattern Formation and Solitons (nlin.PS); Quantum Physics (quant-ph)

arXiv:2111.07326 [cond-mat.quant-gas]

(or arXiv:2111.07326v2 [cond-mat.quant-gas] for this version)

https://doi.org/10.48550/arXiv.2111.07326 Focus to learn more arXiv-issued DOI via DataCite

arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website.

Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them.

Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs.