Strong Coupling and Entanglement of Quantum Emitters Embedded in a Nanoantenna-Enhanced Plasmonic Cavity

Hensen M, Heilpern T, Gray SK, Pfeiffer W (2018)
ACS PHOTONICS 5(1): 240-248.

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Establishing strong coupling between spatially separated and thus selectively addressable quantum emitters is a key ingredient to complex quantum optical schemes in future technologies. Insofar as many plasmonic nanostructures are concerned, however, the energy transfer and mutual interaction strength between distant quantum emitters can fail to provide strong coupling. Here, based on mode hybridization, the longevity and waveguide character of an elliptical plasmon cavity are combined with intense and highly localized field modes of suitably designed nanoantennas. Based on FDTD simulations a quantum emitter-plasmon coupling strength hg = 16.7 meV is reached while simultaneously keeping a small plasmon resonance line width h gamma(s) = 33 meV. This facilitates strong coupling, and quantum dynamical simulations reveal an oscillatory exchange of excited state population arid a notable degree of entanglement between the quantum emitters spatially separated by 1.8 mu m, i.e., about twice the operating wavelength.
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Hensen M, Heilpern T, Gray SK, Pfeiffer W. Strong Coupling and Entanglement of Quantum Emitters Embedded in a Nanoantenna-Enhanced Plasmonic Cavity. ACS PHOTONICS. 2018;5(1):240-248.
Hensen, M., Heilpern, T., Gray, S. K., & Pfeiffer, W. (2018). Strong Coupling and Entanglement of Quantum Emitters Embedded in a Nanoantenna-Enhanced Plasmonic Cavity. ACS PHOTONICS, 5(1), 240-248. doi:10.1021/acsphotonics.7b00717
Hensen, M., Heilpern, T., Gray, S. K., and Pfeiffer, W. (2018). Strong Coupling and Entanglement of Quantum Emitters Embedded in a Nanoantenna-Enhanced Plasmonic Cavity. ACS PHOTONICS 5, 240-248.
Hensen, M., et al., 2018. Strong Coupling and Entanglement of Quantum Emitters Embedded in a Nanoantenna-Enhanced Plasmonic Cavity. ACS PHOTONICS, 5(1), p 240-248.
M. Hensen, et al., “Strong Coupling and Entanglement of Quantum Emitters Embedded in a Nanoantenna-Enhanced Plasmonic Cavity”, ACS PHOTONICS, vol. 5, 2018, pp. 240-248.
Hensen, M., Heilpern, T., Gray, S.K., Pfeiffer, W.: Strong Coupling and Entanglement of Quantum Emitters Embedded in a Nanoantenna-Enhanced Plasmonic Cavity. ACS PHOTONICS. 5, 240-248 (2018).
Hensen, Matthias, Heilpern, Tal, Gray, Stephen K., and Pfeiffer, Walter. “Strong Coupling and Entanglement of Quantum Emitters Embedded in a Nanoantenna-Enhanced Plasmonic Cavity”. ACS PHOTONICS 5.1 (2018): 240-248.
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