Entanglement between dependent degrees of freedom: quasi-particle correlations
F. Barkhausen, L. Ares Santos, S. Schumacher, and J. Sperling
Submitted. arXiv:2410.14290

Experimental measurement of the reappearance of Rabi rotations in semiconductor quantum dots
L. Hanschke, T. K. Bracht, E. Schöll, D. Bauch, E. Berger, P. Kallert, M. Peter, A. J. Garcia Jr., S. F. Covre da Silva, S. Manna, A. Rastelli, S. Schumacher, D. E. Reiter, and K. D. Jöns
Submitted. arXiv:2409.19167

Moire exciton polaritons in twisted photonic lattices at room temperature
C. Xing, Y. Wang, T. Schneider, X. Zhai, X. Zhang, Z. Xiong, H. Wu, Y. Ren, H. Dai, X. Wang, A. Pan, S. Schumacher, X. Ma, and T. Gao
Submitted. arXiv:2408.02431

Numerical solution of nonlinear Schrödinger equation by a hybrid pseudospectral-variational quantum algorithm
N. Köcher, H. Rose, J. Schumacher, and S. Schumacher
Submitted. arXiv:2407.02989

Observation of sub-Poissonian correlation in spin-orbit coupled polariton vortex pairs at room temperature
X. Zhai, Y. Gao, X. Ma, C. Xing, X. Wang, A. Pan, M. Assmann, S. Schumacher, and T. Gao
Submitted. arXiv:2403.15133

Optically controllable localization of exciton polariton condensates in a potential lattice
Q. Ai, J. Wingenbach, X. Yang, J. Wei, Z. Hatzopoulos, P. G. Savvidis, S. Schumacher, X. Ma, and T. Gao
Submitted. arXiv:2401.03625

Phosphazenium salt n-dopant: toward doped organic semiconductors with high thermal stability
H. Wei, J. Guo, H. Liu, P.-A. Chen, Y. Liu, J. Xia, J. Ding, Z. Gong, X. Zeng, C. Peng, C. Chen, H. Chen, C. Dong, S. Schumacher, T. Lei, S. Wang, and Y. Hu
Submitted.

Organic room-temperature polariton condensate in a higher-order topological lattice
C. Bennenhei, H. Shan, M. Struve, N. Kunte, F. Eilenberger, J. Ohmer, U. Fischer, S. Schumacher, X. Ma, C. Schneider, and M. Esmann
ACS Photonics 11, 3046 (2024).

Time-bin entanglement in the deterministic generation of linear photonic cluster states
D. Bauch, N. Köcher, N. Heinisch, and S. Schumacher
APL Quantum 1, 036110 (2024).

On-demand indistinguishable and entangled photons using tailored cavity designs
D. Bauch, D. Siebert, K. D. Jöns, J. Förstner, and S. Schumacher
Advanced Quantum Technologies 7, 2300142 (2024).
Selected for journal front cover.

Swing-up dynamics in quantum emitter cavity systems: near ideal single photons and entangled photon pairs
N. Heinisch, N. Köcher, D. Bauch, and S. Schumacher
Physical Review Research (Letter) 6, L012017 (2024).

Topological edge and corner states in coupled wave lattices in nonlinear polariton condensates
T. Schneider, W. Gao, T. Zentgraf, S. Schumacher, and X. Ma
Nanophotonics 13, 509 (2024).

Manipulating spectral topology and exceptional points by nonlinearity in non-Hermitian polariton systems
J. Wingenbach, S. Schumacher, and X. Ma
Physical Review Research 6, 013148 (2024).

Dynamics of electron-hole Coulomb attractive energy and dipole moment of hot excitons in donor-acceptor polymers
F. Bauch, C. Dong, and S. Schumacher
The Journal of Physical Chemistry C 128, 3525 (2024).

Photochemical reaction enabling the engineering of photonic spin-orbit coupling in organic-crystal optical microcavities
Q. Liang, X. Ma, J. Ren, T. Long, C. Gu, C. An, H. Fu, S. Schumacher, and Q. Liao
Journal of the American Chemical Society 146, 4542 (2024).

Charge transfer in superbase n-type doping of PCBM induced by deprotonation
C. Dong, F. Bauch, Y. Hu, and S. Schumacher
Physical Chemistry Chemical Physics 26, 4194 (2024).

Tracking quantum coherence in polariton condensates with time-resolved tomography
C. Lüders, M. Pukrop, F. Barkhausen, E. Rozas, C. Schneider, S. Höfling, J. Sperling, S. Schumacher, and M. Aßmann
Physical Review Letters 130, 113601 (2023).

Strain induced indirect-to-direct bandgap transition, photoluminescence enhancement, and linewidth reduction in bilayer MoTe₂
Y. Yu, C. Dong, R. Binder, S. Schumacher, and C.-Z. Ning
ACS Nano 17, 4230 (2023).

Continuous-variable quantum optics and resource theory for ultrafast semiconductor spectroscopy
C. Lüders, F. Barkhausen, M. Pukrop, E. Rozas, J. Sperling, S. Schumacher, and M. Aßmann
Optical Materials Express 13, 29976 (2023).

Circularly polarized electroluminescence from a single-crystal organic microcavity light-emitting diode based on photonic spin-orbit interactions
J. Jia, X. Cao, X. Ma, J. De, S. Schumacher, Q. Liao, and H. Fu
Nature Communications 14, 31 (2023).

Dynamics-induced charge transfer in semiconducting conjugated polymers
F. Bauch, C. Dong, and S. Schumacher
Journal of Materials Chemistry C 11, 12992 (2023).

Electrically controlling vortices in a neutral exciton polariton condensate at room temperature
X. Zhai, X. Ma, Y. Gao, C. Xing, M. Gao, H. Dai, X. Wang, A. Pan, S. Schumacher, and T. Gao
Physical Review Letters 131, 136901 (2023).

A room-temperature electrical field-enhanced ultrafast switch in organic microcavity polariton condensates
J. De, X. Ma, F. Yin, J. Ren, J. Yao, S. Schumacher, G. Malpuech, Q. Liao, D. Solnyshkov, and H. Fu
Journal of the American Chemical Society (JACS) 145, 1557 (2023).

Single-shot spatial instability and electric control of polariton condensates at room temperature
Y. Gao, X. Ma, X. Zhai, C. Xing, M. Gao, H. Dai, H. Wu, T. Liu, Y. Ren, X. Wang, A. Pan, W. Hu, S. Schumacher, and T. Gao
Physical Review B 108. 205303 (2023).

Nonlinear down-conversion in a single quantum dot
B. Jonas, D. Heinze, E. Schöll, P. Kallert, T. Langer, S. Krehs, A. Widhalm, K. D. Jöns, D. Reuter, S. Schumacher, and A. Zrenner
Nature Communications 13, 1387 (2022).
Also see UPB press release.

Manipulating polariton condensates by Rashba-Dresselhaus coupling at room temperature
Y. Li, X. Ma, X. Zhai, M. Gao, H. Dai, S. Schumacher, and T. Gao
Nature Communications 13, 3785 (2022).
Also see UPB press release.

Switching off a microcavity polariton condensate near the exceptional point
Y. Li, X. Ma, Z. Hatzopoulos, P. Savvidis, S. Schumacher, and T. Gao
ACS Photonics 9, 2079 (2022).

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, and H. Fu
Advanced Science 9, 2203588 (2022).

Pulse shaping for on-demand emission of single Raman photons from a quantum-dot biexciton
T. Praschan, D. Heinze, D. Breddermann, A. Zrenner, A. Walther, and S. Schumacher
Physical Review B 105, 045302 (2022).

Unidirectional vortex waveguides and multistable vortex pairs in polariton condensates
X. Gao, W. Hu, S. Schumacher, and X. Ma
Optics Letters 47, 3235 (2022).

Protonation-induced charge transfer and polaron formation in organic semiconductors doped by Lewis acids
F. Bauch, C. Dong, and S. Schumacher
RSC Advances 12, 13999 (2022).

Microscopic picture of molecular double doping
T. Bathe, C. Dong, and S. Schumacher
Journal of Physical Chemistry A 126, 2075 (2022).

Realization of exciton-mediated optical spin-orbit interaction in organic microcrystalline resonators
J. Ren, Q. Liao, X. Ma, S. Schumacher, J. Yao, and H. Fu
Laser & Photonics Reviews 16, 2100252 (2022).

Dynamics of phase defects trapped in optically imprinted orbits in dissipative binary polariton condensates
J. Wingenbach, M. Pukrop, S. Schumacher, and X. Ma
Phys. Rev. B 105, 245302 (2022).

Tilting dispersionless bands in an empty microcavity
Y. Gao, Y. Li, X. Ma, M. Gao, H. Dai, S. Schumacher, and T. Gao
Applied Physics Letters 121, 201103 (2022)

Ultrafast electric control of cavity mediated single-photon and photon-pair generation with semiconductor quantum dots
D. Bauch, D. Heinze, J. Förstner, K. D. Jöns, and S. Schumacher
Physical Review B 104, 085308 (2021).

Quantifying quantum coherence in polariton condensates
C. Lüders, M. Pukrop, E. Rozas, C. Schneider, S. Höfling, J. Sperling, S. Schumacher, and M. Aßmann
PRX Quantum 2, 030320 (2021).

Split-ring polariton condensate as a macroscopic two-level quantum system 
Y. Xue, I. Chestnov, E. Sedov, E. Kiktenko, A. K. Fedorov, S. Schumacher, X. Ma, and A. Kavokin
Physical Review Research 3, 013099 (2021).

Atomically thin sheets of lead-free one-dimensional hybrid perovskites feature tunable white-light emission from self-trapped excitons
P. Klement, N. Dehnhardt, C. Dong, F. Dobener, S. Bayliff, J. Winkler, D. M. Hofmann, P. J. Klar, S. Schumacher, S. Chatterjee, and J. Heine
Advanced Materials 33, 2100518 (2021). Press release.

Microscopic insights into charge formation and energetics in n-doped organic semiconductors
C. Dong and S. Schumacher
Journal of Physical Chemistry C 125, 21824 (2021).

Unravelling the electrochemical and spectroscopic properties of neutral and negatively charged perylene tetraethylesters
C. Wiebeler, J. Vollbrecht, A. Neuba, H.-S. Kitzerow, and S. Schumacher
Scientific Reports 11, 16097 (2021).

All-optical beam steering using the polariton lighthouse effect
S. M. H. Luk, H. Vergnet, O. Lafont, P. Lewandowski, N. H. Kwong, E. Galopin, A. Lemaitre, P. Roussignol, J. Tignon, S. Schumacher, R. Binder, and E. Baudin
ACS Photonics 8, 449 (2021).

Structuring coflowing and counterflowing currents of polariton condensates in concentric ring-shaped and elliptical potentials
F. Barkhausen, M. Pukrop, S. Schumacher, and X. Ma
Physical Review B 103, 075305 (2021).

Realization of all-optical vortex switching in exciton-polariton condensates
X. Ma, B. Berger, M. Assmann, R. Driben, T.Meier, C. Schneider, S. Höfling, and S. Schumacher
Nature Communications 11, 897 (2020).
UPB press release. 
Pro-physik coverage.

Efficient Bosonic condensation of exciton polaritons in an H-aggregate organic single-crystal microcavity
J. Ren, Q. Liao, H. Huang, Y. Li, T. Gao, X. Ma, S. Schumacher, J. Yao, S. Bai, and H. Fu
Nano Letters 20, 7550 (2020).

Topological edge states of nonequilibrium polaritons in hollow honeycomb arrays
X. Ma, Y. V. Kartashov, A. Ferrando, and S. Schumacher
Optics Letters 45, 5311 (2020).
In the Optics Spotlight.

Chiral condensates in a polariton hexagonal ring
X. Ma, Y. V. Kartashov, A. Kovokin, and S. Schumacher
Optics Letters 45, 5700 (2020).

Molecular doping in few-molecule polymer-dopant complexes shows reduced Coulomb binding
C. Dong and S. Schumacher
Journal of Materials Chemistry C 8, 11929 (2020).

Formation dynamics of exciton polariton vortices created by non-resonant annular pumping
B. Berger, D. Schmidt, X. Ma, S. Schumacher, C. Schneider, S. Höfling, and M. Aßmann
Physical Review B 101, 245309 (2020).
Selected as Editors' Suggestion.

A transfer function replacement of phenomenological single-mode equations in semiconductor microcavity modeling
M. Carcamo, S. Schumacher, and R. Binder
Applied Optics 59, G112 (2020).

Spiraling vortices in polariton condensates
X. Ma, Y. Y. Kartashov, T. Gao, L. Torner, and S. Schumacher
Physical Review B 102, 045309 (2020).

Circular polarization reversal of half-vortex cores in polariton condensates
M. Pukrop, S. Schumacher, and X. Ma
Physical Review B 101, 205301 (2020).

Multistable circular currents of polariton condensates trapped in ring potentials
F. Barkhausen, S. Schumacher, and X. Ma
Optics Letters 45, 1192 (2020).

Externally controlled Lotka-Volterra dynamics in a linearly polarized polariton fluid
M. Pukrop and S. Schumacher
Physical Review E 101, 012207 (2020).

Controllable high-speed polariton waves in a PT-symmetric lattice
X. Ma, Y. Y. Kartashov, T. Gao, and S. Schumacher
New Journal of Physics 21, 123008 (2019).

Bloch oscillations of multidimensional dark soliton wave packets and light bullets 
R. Driben, X. Ma, S. Schumacher, and T. Meier
Optics Letters 44, 1327 (2019).

Molecular doping of PCPDT-BT co-polymers: comparison of molecular complexes with and without integer charge transfer
C. Dong and S. Schumacher
Journal of Physical Chemistry C 123, 30863 (2019).

Curved polar dibenzocoronene esters and imides versus their planar centrosymmetric homologs: photophysical and optoelectronic analysis
J. Vollbrecht, C. Wiebeler, H. Bock, S. Schumacher, and H. Kitzerow
Journal of Physical Chemistry C 123, 4483 (2019).

Vortex multistability and Bessel vortices in polariton condensates 
X. Ma and S. Schumacher 
Physical Review Letters 121, 227404 (2018).

Microscopic theory of cavity-enhanced single-photon emission from optical two-photon Raman processes 
D. Breddermann, T. Praschan, D. Heinze, R. Binder, and S. Schumacher 
Physical Review B 97, 125303 (2018).
Selected as Editors' Suggestion.

Theory of optically controlled anisotropic polariton transport in semiconductor double microcavities 
S. M. H. Luk, P. Lewandowski, N. H. Kwong, E. Baudin, O. Lafont, J. Tignon, P. T. Leung, K. P. Chan, M. Babilon, S. Schumacher, and R. Binder 
Journal of the Optical Society of America B 35, 146 (2018).

Creation and manipulation of stable dark solitons and vortices in microcavity polariton condensates 
X. Ma, O. Egorov, and S. Schumacher 
Physical Review Letters 118, 157401 (2017).

Optically controlled orbital angular momentum generation in a polaritonic quantum fluid 
S. M. H. Luk, N. H. Kwong, P. Lewandowski, S. Schumacher, and R. Binder 
Physical Review Letters 119, 113903 (2017).

Polarization-entangled twin photons from two-photon quantum-dot emission 
D. Heinze, A. Zrenner, and S. Schumacher 
Physical Review B 95, 245306 (2017).

Ultrafast electronic energy transfer in an orthogonal molecular dyad 
C. Wiebeler, F. Plasser, G. J. Hedley, A. Ruseckas, I. D. W. Samuel, and S. Schumacher
The Journal of Physical Chemistry Letters 8, 1086 (2017).

Vortex-vortex control in polariton condensates 
X. Ma and S. Schumacher 
Physical Review B 95, 235301 (2017).

Directional optical switching and transistor functionality using optical parametric oscillation in a spinor polariton fluid 
P. Lewandowski, S. M. H. Luk, K. P. Chan, P. T. Leung, N. H. Kwong, R. Binder, and S. Schumacher 
Optics Express 25, 31056 (2017).

Enhanced columnar mesophase range through distortions in arene cores
J. Vollbrecht, C. Wiebeler, S. Schumacher, H. Bock, and H. Kitzerow
Molecular crystals and liquid crystals 646, 67 (2017). 

Controlling the optical spin Hall effect with light
O. Lafont, S. M. H. Luk, P. Lewandowski, N. H. Kwong, P. T. Leung, E. Galopin, A. Lemaitre, J. Tignon, S. Schumacher, E. Baudin, and R. Binder
Applied Physics Letters 110, 061108 (2017). Editor's pick.

Optical switching of polariton density patterns in a semiconductor microcavity
N. H. Kwong, C. Y. Tsang, M.H. Luk, Y.C. Tse, C. K. P. Chan, P. Lewandowski, P.T. Leung, S. Schumacher, and R. Binder
Physica Scripta 92, 034006 (2017).

All-optical tailoring of single-photon spectra in a quantum-dot microcavity system
D. Breddermann, D. Heinze, R. Binder, A. Zrenner, and S. Schumacher
Physical Review B 94, 165310 (2016).

Two-dimensional symbiotic solitons and vortices in binary condensates with attractive cross-species interaction 
X. Ma, R. Driben, B. Malomed, T. Meier, and S. Schumacher
Scientific Reports 6, 34847 (2016).

Experimental realization of a polariton beam amplifier
D. Niemietz, J. Schmutzler, P. Lewandowski, M. Aßmann, S. Schumacher, K. Winkler, M. Kamp, C. Schneider, S. Höfling, and M. Bayer 
Physical Review B 93, 235301 (2016). Editor's Suggestion. Featured in Physics. 

Dynamics of exciton-polaritons in discrete lattices under incoherent localized pumping
A. V. Yulin, I. Yu Chestnov, X. Ma, S. Schumacher, U Peschel, and O. A. Egorov
Physical Review B 94, 054312 (2016).

Polarization dependence of nonlinear wave mixing of spinor polaritons in semiconductor microcavities 
P. Lewandowski, O. Lafont, E. Baudin, C. Y. Tsang, P. T. Leung, S. M. H. Luk, E. Galopin, A. Lemaitre, J. Bloch, J. Tignon, Ph. Roussignol, N. H. Kwong, R. Binder, and S. Schumacher
Physical Review B 94, 045308 (2016). 

Patterns and switching dynamics in polaritonic quantum fluids in semiconductor microcavities
N. H. Kwong, C. Y. Tsang, M.H. Luk, Y.C. Tse, P. Lewandowski, C. K. P. Chan, P.T. Leung, S. Schumacher, and R. Binder
Journal of the Optical Society of America B 33, C153 (2016). Invited.

Bay-extended, distorted perylene esters showing visible luminescence after ultraviolet excitation: photophysical and electrochemical analysis
J. Vollbrecht, C. Wiebeler, A. Neuba, H. Bock, S. Schumacher, and H. Kitzerow
Journal of Physical Chemistry C 120, 7839 (2016).

A quantum dot single-photon source with on-the-fly all-optical polarization control and timed emission 
D. Heinze, D. Breddermann, A. Zrenner, and S. Schumacher 
Nature Communications 6, 8473 (2015).
Also see news articles on pro-physik.de, photonik.de, OWLJournal, and derStandard.at.

How intermolecular geometrical disorder affects the doping of donor-acceptor conjugated copolymers
D. Di Nuzzo, C. Fontanesi, R. Jones, S. Allard, U. Scherf, E. von Hauff, S. Schumacher, and E. Da Como
Nature Communications 6, 6460 (2015).
Also see news article on phys.org

Curvature effects in the band structure of carbon nanotubes including spin-orbit coupling
H. Liu, D. Heinze, H. Duc, S. Schumacher, and T. Meier
Journal of Physics: Condensed Matter 27, 445501 (2015).

A population-competition model for analyzing transverse optical patterns including optical control and structural anisotropy
Y. C. Tse, K. P. Chan, S. Luk, N. H. Kwong, P. T. Leung, R. Binder, and S. Schumacher
New Journal of Physics 17, 083054 (2015).

All-optical flow control of a polariton condensate using only non-resonant excitation
J. Schmutzler, P. Lewandowski, M. Assmann, S. Schumacher, M. Kamp, C. Schneider, S. Höfling, and M. Bayer
Physical Review B 91, 195308 (2015).

Sub-picosecond exciton dynamics in polyfluorene films from experiment and microscopic theory 
J.-C. Denis, S. Schumacher, G. J. Hedley, A. Ruseckas, P. O. Morawska, Y. Wang, S. Allard, U. Scherf G. A. Turnbull, I. D. W. Samuel, and I. Galbraith
Journal of Physical Chemistry C 119, 9734 (2015).

Auf dem Weg zum optischen Transistor: optische Muster in Halbleiternanostrukturen
S. Schumacher
Forschungsforum Paderborn 18, 20 (2015).

Optical spectroscopy of graphene quantum dots: the case of C132 
H. Riesen, C. Wiebeler, and S. Schumacher 
Journal of Physical Chemistry A 118, 5189 (2014).

Quantum yields and reaction times of photochromic diarylethenes from ab-initio non-adiabatic molecular dynamics: normal vs. inverse type 
C. Wiebeler and S. Schumacher 
Journal of Physical Chemistry A 118, 7816 (2014).

Polycyclic aromatic hydrocarbons obtained by lateral extension of mesogenic perylene cores: Absorption and optoelectronic properties 
J. Vollbrecht, H. Bock, C. Wiebeler, S. Schumacher, and H. Kitzerow 
Chemistry - A European Journal 20, 12026 (2014). Communication.

Influence of Coulomb-induced band couplings on linear excitonic absorption spectra of semiconducting carbon nanotubes 
H. Liu, S. Schumacher, and T. Meier 
Physical Review B 89, 155407 (2014).

Formation and control of transverse patterns in a quantum fluid of microcavity polaritons 
P. Lewandowski, V. Ardizzone, Y.C. Tse, N.H. Kwong, M.H. Luk, A. Lücke, M. Abbarchi, J. Bloch, E.Baudin, E. Galopin, A. Lemaître, P.T. Leung, Ph. Roussignol, R. Binder, J. Tignon, and S. Schumacher 
Proc. SPIE 8984, 89840X (2014).

Optical spectrum, perceived color, refractive index, and non-adiabatic dynamics of the photochromic diarylethene CMTE
C. Wiebeler, C. Bader, C. Meier, and S. Schumacher 
Physical Chemistry Chemical Physics (PCCP) 16, 14531 (2014).

Formation and control of Turing patterns in a coherent quantum fluid 
V. Ardizzone, P. Lewandowski, M.H. Luk, Y.C. Tse, N.H. Kwong, A. Lücke, M. Abbarchi, E. Baudin, E. Galopin, J. Bloch, A. Lemaître, P.T. Leung, Ph. Roussignol, R. Binder, J. Tignon, and S. Schumacher
Scientific Reports 3, 3016 (2013). (Nature Publishing Group)

Two-photon physics with quantum-dot biexcitons
S. Schumacher and A. Zrenner
Proc. SPIE 8623, 86230E (2013). invited paper.

Charge photogeneration in donor-acceptor conjugated materials: influence of excess excitation energy and chain length 
R. Tautz, E. Da Como, C. Wiebeler, G. Soavi, I. Dumsch, N. Fröhlich, S. Allard, U. Scherf, G. Cerullo, S. Schumacher, and J. Feldmann
Journal of the American Chemical Society (JACS) 135, 4282 (2013).  

Transverse optical instability patterns in semiconductor microcavities: polariton scattering and low-intensity all-optical switching
M.H. Luk, Y.C. Tse, N.H. Kwong, P.T. Leung, P. Lewandowski, R. Binder, and S. Schumacher
Physical Review B 87, 205307 (2013).

Spectral signatures of polarons in conjugated co-polymers
C. Wiebeler, R. Tautz, J. Feldmann, E. von Hauff, E. Da Como, and S. Schumacher
Journal of Physical Chemistry B 117, 4454 (2013). 

Excited-state absorption of conjugated polymers in the near-infrared and visible: a computational study of oligofluorenes 
S. Ling, S. Schumacher, I. Galbraith, and M. J. Paterson
Journal of Physical Chemistry C 117, 6889 (2013).

Selection rules and linear absorption spectra of carbon nanotubes in axial magnetic fields
H. Liu, S. Schumacher, and T. Meier
Physical Review B 88, 035429 (2013).

Quantitative description of interactions between linear organic chromophores
J.-C. Denis, S. Schumacher, and I. Galbraith
Journal of Chemical Physics 137, 224102 (2012).
Journal front cover. Editor's Choice article.

Cavity-assisted emission of polarization-entangled photons from biexcitons in quantum dots with fine-structure splitting
S. Schumacher, J. Förstner, A. Zrenner, M. Florian, C. Gies, P. Gartner, and F. Jahnke
Optics Express 20, 5335 (2012).

Dynamics of fluorescence depolarization in branched oligofluorene-truxene molecules        
N. A. Montgomery, G. Hadley, A. Ruseckas, J.-C. Denis, S. Schumacher, A. L. Kanibolotsky, P. J. Skabara, I. Galbraith, G. A. Turnbull, and I. D. W. Samuel
Physical Chemistry Chemical Physics (PCCP) 14, 9176 (2012).           

Optical excitations in star-shaped fluorene molecules    
N. A. Montgomery, J.-C. Denis, S. Schumacher, A. Ruseckas,  P. J. Skabara, A. L. Kanibolotsky, M. J. Paterson, I. Galbraith, G. A. Turnbull, and I. D. W. Samuel 
Journal of Physical Chemistry A 115, 2913 (2011).

Tight-binding model for the electronic and optical properties of nitride-based quantum dots    
S. Schulz, D. Mourad, S. Schumacher, and G. Czycholl    
Physica Status Solidi (b) 248, 1853 (2011). Invited Feature Article.

Photophysics of graphene quantum dots: insights from electronic structure calculations 
S. Schumacher
Physical Review B 83, 081417(R) (2011).

Dynamics of photoexcitation and stimulated optical emission in conjugated polymers: a multiscale quantum-chemistry and Maxwell-Bloch equations approach
S. Schumacher, I. Galbraith, A. Ruseckas, G. A. Turnbull, and I. D. W. Samuel
Physical Review B 81, 245407 (2010).

Transverse optical patterns for ultra-low-light-level all-optical switching
A. M. C. Dawes, D. J. Gauthier, S. Schumacher, N. H. Kwong, R. Binder, and A. L. Smirl
Laser & Photonics Reviews 4, 221 (2010). Invited Review Article.

Electron-spin beat susceptibility of excitons in semiconductor quantum wells
N. H. Kwong, S. Schumacher, and R. Binder
Physical Review Letters 103, 056405 (2009).

Effect of exciton self-trapping and molecular conformation on photophysical properties of oligofluorenes
S. Schumacher, A. Ruseckas, N. A. Montgomery, P. J. Skabara, A. L. Kanibolotsky, M. J. Paterson, I. Galbraith, G. A. Turnbull, and I. D. W. Samuel
Journal of Chemical Physics 131, 154906 (2009).

All-optical signal amplification in multiple-quantum-well resonant photonic bandgap structures
S. Schumacher, N. H. Kwong, and R. Binder
Applied Physics Letters 92, 131109 (2008).

Influence of exciton-exciton correlations on the polarization characteristics of polariton amplification in semiconductor microcavities
S. Schumacher, N. H. Kwong, and R. Binder
Physical Review B 76, 245324 (2007).

Tight-binding model for semiconductor quantum dots with a wurtzite crystal structure: from one-particle properties to Coulomb correlations and optical spectra
S. Schulz, S. Schumacher, and G. Czycholl
Physical Review B 73, 245327 (2006).

Coherent propagation of polaritons in semiconductor heterostructures: nonlinear pulse transmission in theory and experiment
S. Schumacher, G. Czycholl, F. Jahnke, I. Kudyk, L. Wischmeier, I. Rückmann, T. Voss, J. Gutowski, A. Gust, and D. Hommel
Physical Review B 72, 081308(R) (2005).

Optical properties of self-organized wurtzite InN/GaN quantum dots: A combined atomistic tight-binding and full configuration-interaction calculation
N. Baer, S. Schulz, S. Schumacher, P. Gartner, G. Czycholl, F. Jahnke
Applied Physics Letters 87, 231114 (2005).

Polariton propagation in shallow-confinement heterostructures: microscopic theory and experiment showing the break-down of the dead-layer concept
S. Schumacher, G. Czycholl, F. Jahnke, I. Kudyk, L. Wischmeier, H. I. Rückmann, T. Voss, J. Gutowski, A. Gust, G. Alexe, and D. Hommel
Physical Review B 70, 235340 (2004).