Dresden 2017 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 65: Quantum Optics on the Nanoscale: From Fundamental Physics to Quantum Technologies (joined session, HL, DS, O, TT, organized by HL)

HL 65.5: Invited Talk

Thursday, March 23, 2017, 12:00–12:30, HSZ 02

Quantum optics and quantum control at the nanoscale with surface plasmon polaritons — •Stéphane Guérin — UMR 6303 CNRS-Université Bourgogne Franche-Comté, 21078 Dijon, France

The quantum control of emitters is a key issue for quantum information processing at the nanoscale. This generally necessitates the strong coupling of emitters to a high Q-cavity for efficient manipulation of the atoms and field dynamics (cavity quantum electrodynamics or cQED). Since almost a decade, strong efforts are put to transpose cQED concepts to plasmonics in order to profit of the strong mode confinement of surface plasmons polaritons [1]. Despite the intrinsic presence of lossy channels leading to strong decoherence in plasmonics systems, it has been experimentally proven that it is possible to reach the strong coupling regim [2]. In this work, we derive an effective Hamiltonian [3,4], which allows us to describe the metallic nanoparticle-emitter interaction in full analogy with cQED formalism using a multimodal lossy cavity. We discuss (i) the concept of dressed states of quantum emitter strongly coupled to a metal nanoparticle [5], leading for instance to efficient/blockade population transfers or superradiance/subradiance effects, and (ii) the multi-emitter adiabatic control via quantum plasmonics, for instance via stimulated Raman adiabatic processes [3].

[1] M.S. Tame, et al., Nature Physics 9, 329 (2013). [2] G. Zengin, et al., Phys. Rev. Lett. 114, 157401 (2015). [3] B. Rousseaux, et al., Phys. Rev. B 93, 045422 (2016). [4] D. Dzsotjan, et al., Phys. Rev. A 94, 023818 (2016). [5] H. Varguet, et al., Opt. Lett. 41, 4480 (2016).