Observation of mollow triplets with tunable interactions in double lambda systems of individual hole spins

K. G. Lagoudakis, K. A. Fischer, T. Sarmiento, P. L. McMahon, M. Radulaski, J. L. Zhang, Y. Kelaita, C. Dory, K. Müller, J. Vučković

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Abstract

Although individual spins in quantum dots have been studied extensively as qubits, their investigation under strong resonant driving in the scope of accessing Mollow physics is still an open question. Here, we have grown high quality positively charged quantum dots embedded in a planar microcavity that enable enhanced light-matter interactions. Under a strong magnetic field in the Voigt configuration, individual positively charged quantum dots provide a double lambda level structure. Using a combination of above-band and resonant excitation, we observe the formation of Mollow triplets on all optical transitions. We find that when the strong resonant drive power is used to tune the Mollow-triplet lines through each other, we observe anticrossings. We also demonstrate that the interaction that gives rise to the anticrossings can be controlled in strength by tuning the polarization of the resonant laser drive. Quantum-optical modeling of our system fully captures the experimentally observed spectra and provides insight on the complicated level structure that results from the strong driving of the double lambda system.
Original languageEnglish
Article number013602
Number of pages4
JournalPhys. Rev. Lett.
Volume118
Issue number1
DOIs
Publication statusPublished - 5 Jan 2017

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quantum dots
interactions
optical transition
tuning
physics
polarization
configurations
magnetic fields
excitation
lasers

Keywords

  • magneto-optical spectra
  • semiconductor quantum optics
  • trions

Cite this

Lagoudakis, K. G. ; Fischer, K. A. ; Sarmiento, T. ; McMahon, P. L. ; Radulaski, M. ; Zhang, J. L. ; Kelaita, Y. ; Dory, C. ; Müller, K. ; Vučković, J. / Observation of mollow triplets with tunable interactions in double lambda systems of individual hole spins. In: Phys. Rev. Lett. 2017 ; Vol. 118, No. 1.
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abstract = "Although individual spins in quantum dots have been studied extensively as qubits, their investigation under strong resonant driving in the scope of accessing Mollow physics is still an open question. Here, we have grown high quality positively charged quantum dots embedded in a planar microcavity that enable enhanced light-matter interactions. Under a strong magnetic field in the Voigt configuration, individual positively charged quantum dots provide a double lambda level structure. Using a combination of above-band and resonant excitation, we observe the formation of Mollow triplets on all optical transitions. We find that when the strong resonant drive power is used to tune the Mollow-triplet lines through each other, we observe anticrossings. We also demonstrate that the interaction that gives rise to the anticrossings can be controlled in strength by tuning the polarization of the resonant laser drive. Quantum-optical modeling of our system fully captures the experimentally observed spectra and provides insight on the complicated level structure that results from the strong driving of the double lambda system.",
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Lagoudakis, KG, Fischer, KA, Sarmiento, T, McMahon, PL, Radulaski, M, Zhang, JL, Kelaita, Y, Dory, C, Müller, K & Vučković, J 2017, 'Observation of mollow triplets with tunable interactions in double lambda systems of individual hole spins', Phys. Rev. Lett., vol. 118, no. 1, 013602. https://doi.org/10.1103/PhysRevLett.118.013602

Observation of mollow triplets with tunable interactions in double lambda systems of individual hole spins. / Lagoudakis, K. G.; Fischer, K. A.; Sarmiento, T.; McMahon, P. L.; Radulaski, M.; Zhang, J. L.; Kelaita, Y.; Dory, C.; Müller, K.; Vučković, J.

In: Phys. Rev. Lett., Vol. 118, No. 1, 013602, 05.01.2017.

Research output: Contribution to journalArticle

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AU - Fischer, K. A.

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AU - Radulaski, M.

AU - Zhang, J. L.

AU - Kelaita, Y.

AU - Dory, C.

AU - Müller, K.

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