Yuejun Shen

All Publications

• Solid-phase heteroepitaxy of oriented Sb₂Se₃ on GaAs for birefringent thin films JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A Xiao, K., Shen, Y., Vailionis, A., Skipper, A. M., Preidl, A., Lindenberg, A. M., Mukherjee, K. 2026; 44 (2)

  View details for DOI 10.1116/6.0005097

  View details for Web of Science ID 001660956500001

• Non-equilibrium entropy production and information dissipation in a non-Markovian quantum dot NATURE PHYSICS Shen, Y., Chen, C., Ma, H., Saunders, A. P., Heide, C., Liu, F., Rotskoff, G. M., Shi, J., Lindenberg, A. M. 2026

  View details for DOI 10.1038/s41567-026-03177-8

  View details for Web of Science ID 001684480500001

• Nonresonant Raman Control of Ferroelectric Polarization. Advanced materials (Deerfield Beach, Fla.) Shi, J., Heide, C., Xu, H., Shen, Y., Henstridge, M., Sedwick, I., Mangu, A., Peng, X., Zhang, S., Trigo, M., Heinz, T. F., Li, J., Nelson, K. A., Baldini, E., Zhou, J., Ghimire, S., Reis, D. A., Lindenberg, A. M. 2025: e10524

  Abstract

  Important advances is recently made in the search for materials with complex multi-phase landscapes that host photoinduced metastable collective states with exotic functionalities. In almost all cases so far, the desired phases are accessed by exploiting light-matter interactions via the imaginary part of the dielectric function through above-bandgap or resonant mode excitation. Nonresonant Raman excitation of coherent modes is experimentally observed and proposed for dynamic material control, but the resulting atomic excursion is limited to perturbative levels. Here, this challenge is overcome by employing nonresonant ultrashort pulses with low photon energies well below the bandgap. Using mid-infrared pulses, ferroelectric reversal is induced in lithium niobate, and the large-amplitude mode displacements are characterized through femtosecond stimulated Raman scattering and second harmonic generation. This approach, validated by first-principle calculations, defines a novel method for synthesizing hidden phases with unique functional properties and manipulating complex energy landscapes at reduced energy consumption and ultrafast speeds.

  View details for DOI 10.1002/adma.202510524

  View details for PubMedID 40855657

• Solution-phase sample-averaged single-particle spectroscopy of quantum emitters with femtosecond resolution. Nature materials Shi, J., Shen, Y., Pan, F., Sun, W., Mangu, A., Shi, C., McKeown-Green, A., Moradifar, P., Bawendi, M. G., Moerner, W. E., Dionne, J. A., Liu, F., Lindenberg, A. M. 2024

  Abstract

  The development of many quantum optical technologies depends on the availability of single quantum emitters with near-perfect coherence. Systematic improvement is limited by a lack of understanding of the microscopic energy flow at the single-emitter level and ultrafast timescales. Here we utilize a combination of fluorescence correlation spectroscopy and ultrafast spectroscopy to capture the sample-averaged dynamics of defects with single-particle sensitivity. We employ this approach to study heterogeneous emitters in two-dimensional hexagonal boron nitride. From milliseconds to nanoseconds, the translational, shelving, rotational and antibunching features are disentangled in time, which quantifies the normalized two-photon emission quantum yield. Leveraging the femtosecond resolution of this technique, we visualize electron-phonon coupling and discover the acceleration of polaronic formation on multi-electron excitation. Corroborated with theory, this translates to the photon fidelity characterization of cascaded emission efficiency and decoherence time. Our work provides a framework for ultrafast spectroscopy in heterogeneous emitters, opening new avenues of extreme-scale characterization for quantum applications.

  View details for DOI 10.1038/s41563-024-01855-7

  View details for PubMedID 38589542

  View details for PubMedCentralID 5615041

• Millimeter-Scale Exfoliation of hBN with Tunable Flake Thickness for Scalable Encapsulation ACS APPLIED NANO MATERIALS McKeown-Green, A. S., Zeng, H. J., Saunders, A. P., Li, J., Shi, J., Shen, Y., Pan, F., Hu, J., Dionne, J. A., Heinz, T. F., Wu, S. M., Zheng, F., Liu, F. 2024

  View details for DOI 10.1021/acsanm.4c00412

  View details for Web of Science ID 001184723800001