Publications

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Highlighted authors are members of the University of Jena.

  1. Broadband Bright Biphotons From Periodically Poled Brillouin Zone Folding Metasurface

    Year of publicationPublished in:Laser and Photonics Reviews J. Zhang, C. Shi, J. Ma, F. Setzpfandt, T. Pertsch, C. Bao, J. Zhang, A. Sukhorukov
    University Bibliography Jena:
    fsu_mods_00029702External link

  2. Bridging Classical and Quantum Approaches for Quantitative Sensing of Turbid Media with Polarization-Entangled Photons

    Year of publicationPublished in:Laser and Photonics Reviews V. Besaga, I. Lopushenko, O. Sieryi, A. Bykov, F. Setzpfandt, I. Meglinski
    Polarimetry with quantum light promises improved measurements for various scenarios. However, fundamental understanding of quantum photonic state transport in complex, real media, and tools to interpret the state after interaction with the sample are still lacking. Here, we theoretically and experimentally explore the evolution of polarization-entangled states in a turbid medium on example of tissue phantoms. By elaborating mathematical relationship between Wolf's coherency matrix and density matrix, we introduce a versatile framework describing the transfer of entangled photons in turbid environments with polarization tracking and resulting quantum state representation with the density operator. Experimentally, we reveal a robust trend in the state evolution depending on the reduced scattering coefficient of the medium. Our theoretical predictions correlate with experimental findings, while the model extends the study by photonic states with different degrees of entanglement. The presented results pave the way for quantitative quantum photonic sensing enabling applications ranging from biomedical diagnostics to remote sensing.
    University Bibliography Jena:
    fsu_mods_00029724External link

  3. Room-temperature polariton condensate in a quasi-2D hybrid perovskite

    Year of publicationStatusReview pendingPublished in:Nature Communications M. Struve, C. Bennenhei, H. Pashaei Adl, K. Song, H. Shan, N. Matukhno, J. Drawer, S. Stephan, F. Eilenberger, N. Jasti, D. Cahen, O. Kyriienko, C. Schneider, M. Esmann
    Quasi-2D halide perovskites are chemically synthesized realizations of quantum well stacks with giant exciton oscillator strengths, tunable emission spectra, and very large exciton binding energies. While these features render quasi-2D halide perovskites a promising platform for room-temperature polaritonics, bosonic condensation and polariton lasing in quasi-2D perovskites have so far remained elusive at ambient conditions. Here, we demonstrate room-temperature cavity exciton-polariton condensation in mechanically exfoliated crystals of the quasi-2D Ruddlesden-Popper iodide perovskite (BA) ₂ (MA) ₂ Pb ₃ I ₁₀ in an open optical microcavity. We observe a polariton condensation threshold of 0.41 µJ cm −² per pulse and detect a strong non-linear response. Interferometric measurements confirm the spontaneous emergence of spatial coherence across the condensate with an associated first-order autocorrelation reaching 0.6 with 1 ps coherence time and an effective de Broglie wavelength of 13 µm. Our results lay the foundation for a new class of room-temperature polariton lasers based on quasi-2D halide perovskites with great potential for hetero-integration with other van-der-Waals materials and combination with photonic crystals or waveguides.
    University Bibliography Jena:
    fsu_mods_00030276External link

  4. Thickness Dependence of Linear and Nonlinear Optical Properties of Multilayer 3R‐MoS 2

    Year of publicationStatusReview pendingPublished in:Advanced Optical Materials F. Abtahi, A. Shaji, G. Ngo, B. Laudert, H. Esfandiar, S. Schmitt, F. Eilenberger
    3R-MoS ₂ , a MoS ₂ polytype with broken inversion symmetry, enables unique light-matter interactions and is promising for linear and nonlinear integrated photonics beyond the monolayer limit. Yet, systematic studies of its thickness-dependent reflectivity and its impact on harmonic generation are still lacking. While AFM can offer atomic-scale resolution, measuring 3R-MoS ₂ on non-solid substrates like PDMS remains challenging. To address this, a fast, non-destructive optical method is introduced to determine the thickness of 3R-MoS ₂ flakes from reflectivity measurements with a mean bias of less than 2 nm in the 3–200 nm range. Nonlinear characterization further reveals distinct thickness-dependent maxima in second- and third-harmonic generation (SHG/THG), with the first clear peak at ≈200 nm. These maxima arise from Fabry–Pérot-type phase matching conditions mediated by the film thickness and can further be shaped by absorption. This work thus provides both a practical thickness metrology and new insights for exploiting thickness-dependent 3R-MoS ₂ nonlinearities in scalable photonic technologies.
    University Bibliography Jena:
    fsu_mods_00030234External link

  6. Broadband and bright photon pairs from periodically poled triple-resonance metasurface

    Year of publicationPublished in:META 2025 in Torremolinos: Proceedings J. Zhang, C. Sh, J. Ma, F. Setzpfandt, T. Pertsch, C. Bao, J. Zhang, A. Sukhorukov
    University Bibliography Jena:
    fsu_mods_00027226External link

  8. Advances in Metamaterial Integrated Photonics

    Year of publicationPublished in:Proceedings: Optical Fiber Communication Conference (OFC) 2025; 30 March–3 April 2025, San Francisco, California, United States J. Schmid, P. Cheben, J. Zhang, R. Korcek, M. Saad-Bin-Alam, R. Cheriton, S. Janz, D. Xu, S. Wang, M. Vachon, R. Ma, R. Halir, G. Wanguemert-Perez, A. Ortega-Monux, I. Fernandez, A. Sanchez-Postigo, J. Luque-Gonzalez, A. Hinestrosa, D. Melati, Z. Mokeddem, C. Alonso-Ramos, L. Vivien, W. Ye, S. Khajavi, W. Fraser, D. Benedikovic, Y. Sirmaci, I. Staude, T. Pertsch, C. Naraine, J. Bradley, A. Knights, T. Bucio, F. Gardes
    University Bibliography Jena:
    fsu_mods_00026512External link

  12. Spectrally Tunable Generation of Entangled Photon Pairs from a Tilted Nonlinear Metasurface

    Year of publicationPublished in:2025 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) S. Lung, J. Ma, M. Weissflog, J. Zhang, S. Saravi, T. Pertsch, F. Setzpfandt, A. Sukhorukov
    University Bibliography Jena:
    fsu_mods_00027683External link
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