We research the interaction of light with matter at the quantum scale. We often use ultrashort pulses of laser light (10-13 second duration) to probe material dynamics and generate quantum states of light. Our current interests include ultrafast quantum optics, quantum networks, and quantum sensing
We develop photonic sources for quantum applications such as quantum computing, quantum communication, and fundamental tests of quantum mechanics. This includes developing and demonstrating the generation of entangled quantum states, new characterization techniques, and methods for tailoring the quantum states of photons.
Karina Garay-Palmett, Dong Beom Kim, Yujie Zhang, Francisco A. Domínguez-Serna, Virginia O. Lorenz, and Alfred B. U’Ren, "Fiber-based photon-pair generation: tutorial," Journal of the Optical Society of America B 40, 469-490 (2023).
B. Fang, M. Menotti, M. Liscidini, J. E. Sipe and V. O. Lorenz, "Three-photon discrete-energy-entangled W state in optical fiber," Phys. Rev. Lett. 123, 070508 (2019).
Y. Zhang, R. Spiniolas, K. Shinbrough, B. Fang, O. Cohen, and V. O. Lorenz, "Dual-pump approach to photon-pair generation: demonstration of enhanced characterization and engineering capabilities," Opt. Express 27, 19050-19061 (2019).
K. Zielnicki, K. Garay-Palmett, D. Cruz-Delgado, H. Cruz-Ramirez, M. F. O’Boyle, B. Fang, V. O. Lorenz, A. B. U’Ren and P. G. Kwiat, "Joint spectral characterization of photon-pair sources," J. Mod. Optics 65, 1141-1160 (2018).
B. Fang, M. Liscidini, J. E. Sipe, and V. O. Lorenz, "Multidimensional characterization of an entangled photon-pair source via stimulated emission tomography," Opt. Express 24, 10013-10019 (2016).
B. Fang, O. Cohen, M. Liscidini, J. E. Sipe, and V. O. Lorenz, "Fast and highly resolved capture of the joint spectral density of photon pairs," Optica 1, 281–4 (2014).
B. Fang, O. Cohen, and V. O. Lorenz, "Polarization-Entangled Photon-Pair Generation in Commercial-Grade Polarization-Maintaining Fiber," J. Opt. Soc. Am. B 31, 277-281 (2014).
B. Fang, O. Cohen, J. B. Moreno and V. O. Lorenz, "State engineering of photon pairs produced through dual-pump spontaneous four-wave mixing," Opt. Express 21, 2707-2717 (2013).
We investigate the generation and storage of photonic quantum states using atomic vapors, and single-photon-level spectroscopy of molecular liquid vibrational states.
Kai Shinbrough and Virginia O. Lorenz, "Variance-based sensitivity analysis of Lambda-type quantum memory," Phys. Rev. A 107, 033703 (2023).
Kai Shinbrough, Benjamin D. Hunt, Virginia O. Lorenz, "Optimization of broadband Λ-type quantum memory using Gaussian pulses," Phys. Rev. A 103, 062418 (2021).
Kai Shinbrough, Yanting Teng, Bin Fang, Virginia O. Lorenz, and Offir Cohen, "Photon-Matter Quantum Correlations in Spontaneous Raman Scattering," Phys. Rev. A 101, 013415 (2020).
S. Meiselman, O. Cohen, M. F. DeCamp, and V. O. Lorenz, "Observation of coherence oscillations of single ensemble excitations in methanol," J. Opt. Soc. Am. B 31, 2131–2135 (2014).
We study quantum-enhanced distributed sensing and create publicly accessible quantum networks.
Yunkai Wang and Virginia O. Lorenz, "Fundamental limit of bandwidth-extrapolation-based superresolution," Phys. Rev. A 108, 012602 (2023).
Yunkai Wang, Yujie Zhang, and Virginia O. Lorenz, "Superresolution in interferometric imaging of strong thermal sources," Phys. Rev. A 104, 022613 (2021).
Yujie Zhang, Rodrigo Araiza Bravo, Virginia O. Lorenz, and Eric Chitambar, "Channel Activation of CHSH Nonlocality," New J. Physics 22, 043003 (2020).
NSF Press Release, "Bringing quantum entanglement to the people" (2024).
K. Kapoor, S. Hoseini, J. Choi, B. E. Nussbaum, Y. Zhang, K. Shetty, C. Skaar, M. Ward, L. Wilson, K. Shinbrough, E. Edwards, R. Wiltfong, C. P. Lualdi, Offir Cohen, P. G. Kwiat, V. O. Lorenz, "Public Quantum Network: The First Node," arXiv:2410.06398 [quant-ph] (2024).