Article
Optics
M. Huang, D. Wu, H. Ren, L. Shen, T. W. Hawkins, J. Ballato, U. J. Gibson, M. Beresna, R. Slavik, J. E. Sipe, M. Liscidini, A. C. Peacock
Summary: Undetected-photon imaging technique is demonstrated using light generated via stimulated four-wave mixing within highly nonlinear silicon fiber waveguides. The achieved high spatial and phase correlation of the system allows for high contrast and stable images.
PHOTONICS RESEARCH
(2023)
Article
Optics
Xiaoqin Gao, Yingwen Zhang, Alessio D'Errico, Khabat Heshami, Ebrahim Karimi
Summary: The experimental demonstration of high-speed measurement and characterization of two-photon interference using a time tagging camera opens up possibilities for practical applications in quantum sensing and communication.
Article
Physics, Multidisciplinary
Federico Andrea Sabattoli, Houssein El Dirani, Laurene Youssef, Francesco Garrisi, Davide Grassani, Luca Zatti, Camille Petit-Etienne, Erwine Pargon, J. E. Sipe, Marco Liscidini, Corrado Sciancalepore, Daniele Bajoni, Matteo Galli
Summary: The study presents a method for generating identical photon pairs with high signal-to-noise ratio in a ring resonator system, by eliminating parasitic noise through a novel system design. This paves the way for the development of integrated devices exploiting the unique properties of identical photon pairs in the same optical mode.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
D. P. Ornelas-Huerta, Przemyslaw Bienias, Alexander N. Craddock, Michael J. Gullans, Andrew J. Hachtel, Marcin Kalinowski, Mary E. Lyon, Alexey Gorshkov, S. L. Rolston, J. Porto
Summary: Long-range Rydberg interactions combined with EIT can produce strongly interacting photons with tunable and controllable strength, sign, and form of the interactions, allowing for the generation of novel few-photon states. It has been shown that in the Rydberg-EIT system, three-body interactions can be as strong or stronger than two-body interactions. The observed features in the outgoing photonic correlations are strongly suggested to be caused by the resonant enhancement of three-body losses based on numerical simulations and analytical estimates.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Nir Nechushtan, Hanzhong Zhang, Mallachi Meller, Avi Pe'er
Summary: The study shows that achieving maximum nonlinear SU(1,1) visibility requires extreme collinear conditions, and near-ideal visibility of approximately 95% can be obtained in an ultra-broadband SU(1,1) interferometer.
NEW JOURNAL OF PHYSICS
(2021)
Article
Physics, Multidisciplinary
Elkin A. Santos, Thomas Pertsch, Frank Setzpfandt, Sina Saravi
Summary: We present a nonlinear imaging scheme using undetected photons that surpasses the diffraction limit by transferring near-field information to far-field information of a correlated photon with a different wavelength. This scheme also enables high-contrast image retrieval with zero background, making it highly sensitive for imaging small objects within challenging spectral ranges with subdiffraction resolutions.
PHYSICAL REVIEW LETTERS
(2022)
Article
Optics
Yingwen Zhang, Duncan England, Andrei Nomerotski, Benjamin Sussman
Summary: In this work, spectral-temporal correlation measurements of the Hong-Ou-Mandel interference effect were demonstrated using a spectrometer based on a photon-counting camera. The setup offers high resolution and flexibility, allowing for efficient gathering of spectral and temporal information from a HOM interferometer.
Article
Optics
Annika Tebben, Clement Hainaut, Andre Salzinger, Sebastian Geier, Titus Franz, Thomas Pohl, Martin Garttner, Gerhard Zurn, Matthias Weidemuller
Summary: Experimental investigation of the nonlinear transmission spectrum of coherent light fields through a Rydberg EIT medium reveals significant differences on two-photon resonance and exposes deficiencies in mean-field models and rate-equation simulations. A more complete understanding of Rydberg EIT and emerging photon interactions necessitates moving beyond existing simplified models and few-photon theories.
Article
Multidisciplinary Sciences
Chan Roh, Geunhee Gwak, Young-Sik Ra
Summary: In this study, we demonstrate the generation of squeezed light that is robust against spatial mode mismatch from a self-imaging optical parametric oscillator below the threshold. The quantum properties of the generated light are investigated when the oscillator is detuned for stable operation. The results show that the generated light is more resilient to mode mismatch compared to single-mode squeezed light, even surpassing infinitely squeezed light as mode mismatch strength increases.
SCIENTIFIC REPORTS
(2021)
Article
Optics
Felix Riexinger, Mirco Kutas, Bjoern Haase, Michael Bortz, Georg von Freymann
Summary: Quantum sensing is a highly promising technique with diverse applications including noise-reduced imaging, super-resolution microscopy, imaging and spectroscopy in challenging spectral ranges. However, theoretical predictions and experimental results often diverge due to idealized conditions. This work develops a simulation method that includes experimental imperfections to bridge the gap between theory and experiment. The simulation results demonstrate the capabilities of this approach and its potential for improving experimental images in post-processing.
LASER & PHOTONICS REVIEWS
(2023)
Article
Physics, Multidisciplinary
Rishi N. Patel, Timothy P. McKenna, Zhaoyou Wang, Jeremy D. Witmer, Wentao Jiang, Raphael Van Laer, Christopher J. Sarabalis, Amir H. Safavi-Naeini
Summary: Researchers have successfully performed single phonon addition and subtraction on a room-temperature mechanical oscillator using a cavity-optomechanical approach. Through strong quantum measurement and a tomography scheme, they observed highly non-Gaussian phase-space distributions and confirmed the counterintuitive doubling of the mean phonon number resulting from phonon addition and subtraction.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Stefan Richter, Sebastian Wolf, Joachim von Zanthier, Ferdinand Schmidt-Kaler
Summary: Cross-correlation signals are analyzed to determine spatial frequency and distance of ions, showing excellent agreement with independent measurements. The method is shown to be effective for two-dimensional arrays of emitters, providing structural information where direct imaging techniques fail.
PHYSICAL REVIEW LETTERS
(2021)
Article
Optics
Fabio Mauceri, Alberto Mercurio, Salvatore Savasta, Omar Di Stefano
Summary: In this paper, we study the interaction of a two-level atom with a single-mode nonlinear electromagnetic resonator and propose a consistent nonlinear-resonator quantum Rabi model that satisfies the gauge principle, addressing the issues of the unreliable standard Kerr model and the destruction of gauge invariance due to truncation of the Hilbert space.
Article
Physics, Multidisciplinary
Evan Meyer-Scott, Nidhin Prasannan, Ish Dhand, Christof Eigner, Viktor Quiring, Sonja Barkhofen, Benjamin Brecht, Martin B. Plenio, Christine Silberhorn
Summary: This study demonstrates the scalable generation of multiphoton entangled states by utilizing active feed-forward and multiplexing, increasing the generation rates and facilitating practical multiphoton protocols for photonic quantum technologies.
PHYSICAL REVIEW LETTERS
(2022)
Article
Optics
Bjorn Erik Haase, Joshua Hennig, Mirco Kutas, Erik Waller, Julian Hering, Georg von Freymann, Daniel Molter
Summary: Sensing with undetected photons in the infrared region is achieved through polarization-optics-based phase-quadrature implementation in a nonlinear interferometer. This allows for obtaining phase and visibility information with a single image acquisition without the need for phase variation, enabling the detection of dynamic processes. The method is demonstrated on both static and dynamic measurement tasks, showcasing its effectiveness.
Article
Physics, Applied
Adria Sansa Perna, Evelyn Ortega, Markus Graefe, Fabian Steinlechner
Summary: In this study, a polarization-entangled photon pair source operating in the visible light range is presented, with high brightness and quantum state fidelity. By studying the trade-off between source brightness and entanglement visibility, application cases for different filtering configurations are proposed, achieving higher brightness.
APPLIED PHYSICS LETTERS
(2022)
Article
Quantum Science & Technology
Yuanyuan Chen, Sebastian Ecker, Lixiang Chen, Fabian Steinlechner, Marcus Huber, Rupert Ursin
Summary: High-dimensional quantum entanglement is a prolific field in quantum information processing due to its high information capacity and error resilience. The study successfully manipulated high-dimensional entanglement using Hong-Ou-Mandel interference and investigated the generation and characterization of frequency entangled qudits in different dimensions both theoretically and experimentally.
NPJ QUANTUM INFORMATION
(2021)
Article
Multidisciplinary Sciences
Sebastian Toepfer, Marta Gilaberte Basset, Jorge Fuenzalida, Fabian Steinlechner, Juan P. Torres, Markus Grafe
Summary: Holography uses interference of a light field to reconstruct the spatial shape of an object, but traditional methods are limited by detection constraints outside the visible range. By implementing phase-shifting holography with nonclassical states of light and quantum interference between two-photon probability amplitudes, it is possible to overcome these limitations and retrieve the spatial shape of transmitted/reflected photons from the object.
Article
Quantum Science & Technology
Meritxell Cabrejo-Ponce, Christopher Spiess, Andre Luiz Marques Muniz, Philippe Ancsin, Fabian Steinlechner
Summary: This research reports on a flexible and versatile source design that can generate high-quality entanglement in continuous-wave and pulsed operation modes. Utilizing off-the-shelf optical components, the approach achieves high efficiency and fidelities above 0.99, while allowing for high-speed phase modulation.
QUANTUM SCIENCE AND TECHNOLOGY
(2022)
Article
Physics, Applied
V. F. Gili, C. Piccinini, M. Safari Arabi, P. Kumar, V Besaga, E. Brambila, M. Graefe, T. Pertsch, F. Setzpfandt
Summary: Quantum imaging is a research field that aims to enhance image reconstruction capabilities by exploiting the quantum nature of light. Despite successful demonstrations, quantum microscopy has been limited for practical applications due to various reasons. In this study, a method utilizing the quantum correlations of photon pairs and a scanning microscope is proposed for fast, single mode quantum imaging. The technique is tested on a metal grating to evaluate its resolution capabilities and demonstrated on onion epithelial cells, indicating its potential for scalable bio-physical quantum microscopy. The results, combined with advancements in photon-pair generation and detection technology, may enable the extension of quantum microscopy applications toward the mid-infrared region.
APPLIED PHYSICS LETTERS
(2022)
Article
Optics
Robin Camphausen, Adria Sansa Perna, Alvaro Cuevas, Alexander Demuth, Javier Arres Chillon, Markus Graefe, Fabian Steinlechner, Valerio Pruneri
Summary: Quantum resources can provide supersensitive performance in optical imaging, but the matching of the wavelength to the detection efficiency range has been technologically challenging. In this study, a visible-wavelength entangled photon source was developed to enable high-speed quantum imaging, improving the acquisition speed by more than an order of magnitude compared to previous demonstrations. The quantum-enhanced phase imager operating at short wavelengths showed improved sensitivity in detecting nanometer scale height differences, making it a promising tool for biomedical and industrial applications.
Article
Physics, Applied
Christopher Spiess, Sebastian Toepfer, Sakshi Sharma, Andrej Krzic, Meritxell Cabrejo-Ponce, Uday Chandrashekara, Nico Lennart Doell, Daniel Rielaender, Fabian Steinlechner
Summary: This study demonstrates how the temporal correlations of photons can be utilized for synchronization in quantum networks. By replacing the optical and electronic transmission of timing signals with classical communication and computer-aided postprocessing, stable synchronization is achieved without the need for external timing references. This research is of great significance for quantum communication networks and could pave the way for future applications in entanglement-based secure time transmission.
PHYSICAL REVIEW APPLIED
(2023)
Article
Physics, Multidisciplinary
Andres Vega, Elkin A. Santos, Jorge Fuenzalida, Marta Gilaberte Basset, Thomas Pertsch, Markus Graefe, Sina Saravi, Frank Setzpfandt
Summary: Quantum imaging with undetected photons achieves high resolution by imaging objects illuminated with idler photons through measuring signal photons. In this study, we theoretically investigate the resolution of this nonlocal imaging scheme and prove that it is diffraction limited to the longer wavelength of the signal and idler pairs.
PHYSICAL REVIEW RESEARCH
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
Adria Sansa Perna, Markus Graefe, Fabian Steinlechner
Summary: This sentence introduces a polarization entangled photon pair source in the visible light range, suitable for use in quantum communication and sensing, and studies its suitability for low cost and low jitter detection.
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Marta Gilaberte Basset, Sebastian Toepfer, Juan P. Torres, Jorge Fuenzalida, Fabian Steinlechner, Markus Graete
Summary: Single photon holographic methods can record single photon holograms without detecting the photon itself, which will benefit various applications in quantum technologies.
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
Tobias B. Gaebler, Nitish Jain, Josue R. Leon Torres, Patrick Hendra, Markus Graefe
Summary: This study focuses on the suitability of simple and common fluorophores for entangled two-photon fluorescence microscopy, measuring the linear absorption rates of entangled photons in standard fluorophores in life science using CW-pumped SPDC waveguides.
2021 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2021)
