TRR 142 - Nonlinear quantum process tomography and photonics of microcavity polaritons (A04)


In this project, we set out to realize a complete description of nonlinear quantum processes involving microcavity polaritons. Such a description is given by a process matrix that maps every possible input state fed to the system to its corresponding output state. To construct this matrix, we will combine advanced spectroscopic techniques and theoretical modelling to realize nonlinear quantum process tomography – a technique known from quantum optics – and apply it to the specific challenges posed by semiconductor systems. In detail, we will fully characterize spontaneous polariton condensate formation, vortex formation, and the polariton optical parametric oscillator.

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Research profile area:
Optoelectronics and Photonics
Project type:
Project duration:
04/2014 - 12/2025
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Principal Investigators

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Prof. Dr. Stefan Schumacher

Department of Physics

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Marc-Alexander Aßmann

Technische Universität Dortmund

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Manfred Bayer

Technische Universität Dortmund

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Cooperating Institutions

Technische Universität Dortmund

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Room-Temperature Electrical Field-Enhanced Ultrafast Switch in Organic Microcavity Polariton Condensates
J. De, X. Ma, F. Yin, J. Ren, J. Yao, S. Schumacher, Q. Liao, H. Fu, G. Malpuech, D. Solnyshkov, Journal of the American Chemical Society (JACS) 145 (2023) 1557–1563.
Helical Polariton Lasing from Topological Valleys in an Organic Crystalline Microcavity
T. Long, X. Ma, J. Ren, F. Li, Q. Liao, S. Schumacher, G. Malpuech, D. Solnyshkov, H. Fu, Advanced Science 9 (2022).
Manipulating polariton condensates by Rashba-Dresselhaus coupling at room temperature
Y. Li, X. Ma, X. Zhai, M. Gao, H. Dai, S. Schumacher, T. Gao, Nature Communications 13 (2022).
Unidirectional vortex waveguides and multistable vortex pairs in polariton condensates
X. Gao, W. Hu, S. Schumacher, X. Ma, Optics Letters 47 (2022) 3235–3238.
Switching Off a Microcavity Polariton Condensate near the Exceptional Point
Y. Li, X. Ma, Z. Hatzopoulos, P.G. Savvidis, S. Schumacher, T. Gao, ACS Photonics 9 (2022) 2079–2086.
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