Related papers: Coherent super- and subradiant dynamics between distant optical quantum emitters

Coherent super- and subradiant dynamics between distant optical quantum emitters

URL: http://arxiv.org/abs/2210.02439v1
Date: Wed, 5 Oct 2022 17:59:06 GMT
Title: Coherent super- and subradiant dynamics between distant optical quantum emitters
Authors: Alexey Tiranov, Vasiliki Angelopoulou, Cornelis Jacobus van Diepen, Bj\"orn Schrinski, Oliver August Dall'Alba Sandberg, Ying Wang, Leonardo Midolo, Sven Scholz, Andreas Dirk Wieck, Arne Ludwig, Anders S{\o}ndberg S{\o}rensen, Peter Lodahl
Abstract summary: Single emitter radiation can be tailored by the photonic environment. Multiple emitters fundamentally extends this picture following a "more is different" dictum. Subradiant states are particularly challenging to realize being highly sensitive to imperfections and decoherence.
Score: 5.240984067778683
License: http://creativecommons.org/licenses/by-sa/4.0/
Abstract: Photon emission is the hallmark of light-matter interaction and the foundation of photonic quantum science, enabling advanced sources for quantum communication and computing. While single emitter radiation can be tailored by the photonic environment, the introduction of multiple emitters fundamentally extends this picture following a "more is different" dictum. The emerging collective effects include modified emission and the creation of emitter-emitter entanglement, towards a new domain of strongly correlated light-matter quantum many-body physics. A fundamental challenge is that the radiative dipole-dipole coupling rapidly decays with spatial separation, i.e. within a fraction of the optical wavelength. This limitation can be overcome in waveguide QED where the coupling is ideally of infinite range. Here we realize distant dipole-dipole radiative coupling with multiple solid-state optical quantum emitters embedded in nanophotonic waveguides. We dynamically probe the collective response and identify both super- and subradiant emission as well as means to control the dynamics by proper excitation techniques. Subradiant states are particularly challenging to realize being highly sensitive to imperfections and decoherence. Our work constitutes a foundational step towards multi-emitter applications of technological importance, e.g., for realizing quantum transduction between microwave qubits and the optical domain or for quantum memories with exponential improvement in photon storage fidelity.

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