868 citations · 6.2k across the 47 of their papers we have counts for
48 papers
Quantum imaging and metrology with undetected photons: a tutorial
Gabriela Barreto Lemos, Mayukh Lahiri, Sven Ramelow +2
We present a tutorial on the phenomenon of induced coherence without induced emission, and specifically its application to imaging and metrology. It is based on a striking effect w…
Mid-IR spectroscopy with NIR grating spectrometers
Paul Kaufmann, Helen M. Chrzanowski, Aron Vanselow +1
Mid-infrared (mid-IR) spectroscopy is a crucial workhorse for a plethora of analytical applications and is suitable for diverse materials, including gases, polymers or biological t…
Talbot self-imaging and two-photon interference in ring-core fibers
Matias Eriksson, Benjamin A. Stickler, Lea Kopf +5
Wave propagation on the surface of cylinders exhibits interferometric self imaging, much like the Talbot effect in the near-field diffraction at periodic gratings. We report the ex…
Mid-Infrared Microscopy via Position Correlations of Undetected Photons
Inna Kviatkovsky, Helen M. Chrzanowski, Sven Ramelow
Quantum imaging with undetected photons (QIUP) has recently emerged as a new powerful imaging tool. Exploiting the spatial entanglement of photon pairs, it allows decoupling of the…
Low random duty-cycle errors in periodically-poled KTP revealed by sum-frequency generation
Felix Mann, Helen M. Chrzanowski, Sven Ramelow
Low-noise quantum frequency conversion in periodically-poled nonlinear crystals has proved challenging when the pump wavelength is shorter than the target wavelength. This is - at…
Engineering AlGaAs-on-insulator towards quantum optical applications
Marlon Placke, Sven Ramelow
Aluminum gallium arsenide has highly desirable properties for integrated parametric optical interactions: large material nonlinearities, maturely established nanoscopic structuring…
Frequency-domain optical coherence tomography with undetected mid-infrared photons
Aron Vanselow, Paul Kaufmann, Ivan Zorin +3
Mid-infrared light scatters much less than shorter wavelengths, allowing greatly enhanced penetration depths for optical imaging techniques such as optical coherence tomography (OC…
Microscopy with undetected photons in the mid-infrared
Inna Kviatkovsky, Helen M. Chrzanowski, Ellen G. Avery +2
Owing to its capacity for unique (bio)-chemical specificity, microscopy withmid-IR illumination holds tremendous promise for a wide range of biomedical and industrial applications.…
An efficient, tunable, and robust source of narrow-band photon pairs at the Rb D1 line
Roberto Mottola, Gianni Buser, Chris Müller +6
We present an efficient and robust source of photons at the Rb D1-line (795 nm) with a narrow bandwidth of MHz. The source is based on non-degenerate, cavity-enha…
Ultra-broadband SPDC for spectrally far separated photon pairs
Aron Vanselow, Paul Kaufmann, Helen M. Chrzanowski +1
Generating photon pairs via spontaneous parametric down-conversion (SPDC) in nonlinear crystals is important for a wide range of quantum optics experiments with spectral properties…
Versatile Super-Sensitive Metrology Using Induced Coherence
Nathaniel R. Miller, Sven Ramelow, William N. Plick
We theoretically analyze the phase sensitivity of the Induced-Coherence (Mandel-Type) Interferometer, including the case where the sensitivity is "boosted" into the bright input re…
Strong Nonlinear Coupling due to Induced Photon Interaction on a SiN Chip
Sven Ramelow, Alessandro Farsi, Zachary Vernon +6
Second-order optical processes lead to a host of applications in classical and quantum optics. With the enhancement of parametric interactions that arise due to light confinement,…
Frequency Multiplexing for Quasi-Deterministic Heralded Single-Photon Sources
Chaitali Joshi, Alessandro Farsi, Stéphane Clemmen +2
Single-photon sources based on optical parametric processes have been used extensively for quantum information applications due to their flexibility, room-temperature operation and…
Ramsey interference with single photons
Stéphane Clemmen, Alessandro Farsi, Sven Ramelow +1
Interferometry using discrete energy levels in nuclear, atomic or molecular systems is the foundation for a wide range of physical phenomena and enables powerful techniques such as…
Quantum Interference between Transverse Spatial Waveguide Modes
Aseema Mohanty, Mian Zhang, Avik Dutt +3
Integrated quantum optics has drastically reduced the size of table-top optical experiments to the chip-scale, allowing for demonstrations of large-scale quantum information proces…
Dual-pumped degenerate Kerr oscillator in a silicon nitride microresonator
Yoshitomo Okawachi, Mengjie Yu, Kevin Luke +5
We demonstrate a degenerate parametric oscillator in a silicon-nitride microresonator. We use two frequency-detuned pump waves to perform parametric four-wave mixing and operate in…
Continuous generation of Rubidium vapor in hollow-core photonic band-gap fibers
Prathamesh S. Donvalkar, Sven Ramelow, Stephane Clemmen +1
We demonstrate high optical depths (50+/-5), lasting for hours in Rubidium-filled hollow-core photonic band-gap fibers, which represents a 1000X improvement over operation times pr…
Silicon-Nitride Platform for Narrowband Entangled Photon Generation
Sven Ramelow, Alessandro Farsi, Stéphane Clemmen +4
CMOS-compatible photonic chips are highly desirable for real-world quantum optics devices due to their scalability, robustness, and integration with electronics. Despite impressive…
Tunable frequency combs based on dual microring resonators
Steven A. Miller, Yoshitomo Okawachi, Sven Ramelow +5
In order to achieve efficient parametric frequency comb generation in microresonators, external control of coupling between the cavity and the bus waveguide is necessary. However,…
Experimental access to higher-dimensional entangled quantum systems using integrated optics
Christoph Schaeff, Robert Polster, Marcus Huber +2
Integrated optics allow the generation and control of increasingly complex photonic states on chip based architectures. Here, we implement two entangled qutrits - a 9-dimensional q…
A simple and robust method for characterization of afterpulsing in single photon detectors
Gerhard Humer, Momtchil Peev, Christoph Schaeff +3
Single photon detectors are important for a wide range of applications each with their own specific requirements, which makes necessary the precise characterization of detectors. H…
Strong polarization mode coupling in microresonators
Sven Ramelow, Alessandro Farsi, Stéphane Clemmen +6
We observe strong modal coupling between the TE00 and TM00 modes in Si3N4 ring resonators revealed by avoided crossings of the corresponding resonances. Such couplings result in si…
On the equivalence of Clauser-Horne and Eberhard inequality based tests
Andrei Khrennikov, Sven Ramelow, Rupert Ursin +3
Recently, the results of the first experimental test for entangled photons closing the detection loophole (also referred to as the fair sampling loophole) were published (Vienna, 2…
Quantum Imaging with Undetected Photons
Gabriela B. Lemos, Victoria Borish, Garrett D. Cole +3
Indistinguishable quantum states interfere, but the mere possibility of obtaining information that could distinguish between overlapping states inhibits quantum interference. Quant…