Topologically protected subradiant cavity polaritons through linewidth
narrowing enabled by dissipationless edge states
- URL: http://arxiv.org/abs/2308.04277v1
- Date: Tue, 8 Aug 2023 14:20:35 GMT
- Title: Topologically protected subradiant cavity polaritons through linewidth
narrowing enabled by dissipationless edge states
- Authors: Yuwei Lu, Jingfeng Liu, Haoxiang Jiang, Zeyang Liao
- Abstract summary: Polaritons with narrow linewidth and long lifetime are appealing in applications such as quantum sensing and storage.
Inheriting from the topologically protected properties of edge states, the subradiance of cavity polaritons can be preserved in the disordered atom mirror.
- Score: 0.9558392439655011
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Cavity polaritons derived from the strong light-matter interaction at the
quantum level provide a basis for efficient manipulation of quantum states via
cavity field. Polaritons with narrow linewidth and long lifetime are appealing
in applications such as quantum sensing and storage. Here, we propose a
prototypical arrangement to implement a whispering-gallery-mode resonator with
topological mirror moulded by one-dimensional atom array, which allows to boost
the lifetime of cavity polaritons over an order of magnitude. This considerable
enhancement attributes to the coupling of polaritonic states to dissipationless
edge states protected by the topological bandgap of atom array that suppresses
the leakage of cavity modes. When exceeding the width of Rabi splitting,
topological bandgap can further reduce the dissipation from polaritonic states
to bulk states of atom array, giving arise to subradiant cavity polaritons with
extremely sharp linewidth. The resultant Rabi oscillation decays with a rate
even below the free-space decay of a single quantum emitter. Inheriting from
the topologically protected properties of edge states, the subradiance of
cavity polaritons can be preserved in the disordered atom mirror with moderate
perturbations involving the atomic frequency, interaction strengths and
location. Our work opens up a new paradigm of topology-engineered quantum
states with robust quantum coherence for future applications in quantum
computing and network.
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