96 citations · 636 across the 25 of their papers we have counts for
25 papers
Phase sensitivity of spatially broadband high-gain SU(1,1) interferometers
D. Scharwald, T. Meier, P. R. Sharapova
Nonlinear interferometers are promising tools for quantum metrology, as they are characterized by an improved phase sensitivity scaling compared to linear interferometers operating…
Two-colour spectrally multimode integrated SU(1,1) interferometer
Alessandro Ferreri, Polina R. Sharapova
Multimode integrated interferometers have great potential for both spectral engineering and metrological applications. However, material dispersion of integrated platforms constitu…
Flexible source of correlated photons based on LNOI rib waveguides
L. Ebers, A. Ferreri, M. Hammer +4
Lithium niobate on insulator (LNOI) has a great potential for photonic integrated circuits, providing substantial versatility in design of various integrated components. To properl…
Steady states of -type three-level systems excited by quantum light in lossy cavities
H. Rose, O. V. Tikhonova, T. Meier +1
The interaction between quantum light and matter is being intensively studied for systems that are enclosed in high- cavities which strongly enhance the light-matter coupling. H…
Quantum optical coherence: From linear to nonlinear interferometers
K. -H. Luo, M. Santandrea, M. Stefszky +6
Interferometers provide a highly sensitive means to investigate and exploit the coherence properties of light in metrology applications. However, interferometers come in various fo…
Bright correlated twin-beam generation and radiation shaping in high-gain parametric down-conversion with anisotropy
M. Riabinin, P. R. Sharapova, T. Meier
Uniaxial anisotropy in nonlinear birefringent crystals limits the efficiency of nonlinear optical interactions and breaks the spatial symmetry of light generated in the parametric…
Spectrally multimode integrated SU(1,1) interferometer
Alessandro Ferreri, Matteo Santandrea, Michael Stefszky +4
Nonlinear SU(1,1) interferometers are fruitful and promising tools for spectral engineering and precise measurements with phase sensitivity below the classical bound. Such interfer…
Dark-state and loss-induced phenomena in the quantum-optical regime of -type three-level systems
H. Rose, D. V. Popolitova, O. V. Tikhonova +2
The interaction of matter with quantum light leads to phenomena which cannot be explained by semiclassical approaches. Of particular interest are states with broad photon number di…
Spatial entanglement and state engineering via four-photon Hong-Ou-Mandel interference
A. Ferreri, V. Ansari, B. Brecht +2
The phenomenon of entanglement is the basis of quantum information and quantum communication processes. Entangled systems with a large number of photons are of great interest at pr…
Managing spectral properties and Schmidt mode content of squeezed vacuum light using sum-frequency converter
Vladislav Sukharnikov, Polina Sharapova, Olga Tikhonova
Capabilities of quantum optical SFG-gate seeded by squeezed light are investigated in the frame of frequency Schmidt modes. Methods to manage and manipulate extensively the propert…
Generating two-mode squeezing with multimode measurement-induced nonlinearity
M. Riabinin, P. R. Sharapova, T. J. Bartley +1
Measurement-induced nonclassical effects in a two-mode interferometer are investigated theoretically using numerical simulations and analytical results. We demonstrate that for cer…
Properties of bright squeezed vacuum at increasing brightness
P. R. Sharapova, G. Frascella, M. Riabinin +6
Bright squeezed vacuum (BSV) is a non-classical macroscopic state of light, which can be generated through high-gain parametric down-conversion or four-wave mixing. Although BSV is…
The multimode four-photon Hong-Ou-Mandel interference
A. Ferreri, V. Ansari, C. Silberhorn +1
The two-photon Hong-Ou-Mandel (HOM) interference is a pure quantum effect which indicates the degree of indistinguishability of photons. The four-photon HOM interference exhibits r…
Nonlinear integrated quantum electro-optic circuits
Kai-Hong Luo, Sebastian Brauner, Christof Eigner +5
Future quantum computation and networks require scalable monolithic circuits, which incorporate various advanced functionalities on a single physical substrate. Although substantia…
Bright squeezed vacuum in a nonlinear interferometer: frequency/temporal Schmidt-mode description
P. R. Sharapova, O. V. Tikhonova, S. Lemieux +2
Control over the spectral properties of the bright squeezed vacuum (BSV), a highly multimode non-classical macroscopic state of light that can be generated through high-gain parame…
Modified Two-Photon Interference Achieved by the Manipulation of Entanglement
P. R. Sharapova, K. H. Luo, H. Herrmann +3
In this theoretical study we demonstrate that entangled states are able to significantly extend the functionality of Hong-Ou-Mandel (HOM) interferometers. By generating a coherent…
Toolbox for the design of -based passive and active integrated quantum circuits
P. R. Sharapova, K. H. Luo, H. Herrmann +3
We present and discuss perspectives of current developments on advanced quantum optical circuits monolithically integrated in the lithium niobate platform. A set of basic component…
Orbital angular momentum modes of high-gain parametric down-conversion
Lina Beltran, Gaetano Frascella, Angela M. Perez +6
Light beams with orbital angular momentum (OAM) are convenient carriers of quantum information. They can be also used for imparting rotational motion to particles and provide high…
Engineering the Frequency Spectrum of Bright Squeezed Vacuum via Group Velocity Dispersion in an SU(1,1) Interferometer
Samuel Lemieux, Mathieu Manceau, Polina R. Sharapova +4
Bright squeezed vacuum, a promising tool for quantum information, can be generated by high-gain parametric down-conversion. However, its frequency and angular spectra are typically…
Tunable optical parametric generator based on the pump spatial walk-off
Andrea Cavanna, Felix Just, Polina R. Sharapova +3
We suggest a novel optical parametric generator (OPG) in which one of the down-converted beams is spontaneously generated along the Poynting vector of the pump beam. In this config…
Projective filtering of a single spatial radiation eigenmode
A. M. Pérez, P. R. Sharapova, S. S. Straupe +4
Lossless filtering of a single coherent (Schmidt) mode from spatially multimode radiation is a problem crucial for optics in general and for quantum optics in particular. It become…
Giant Narrowband Twin-Beam Generation along the Pump Energy Propagation
Angela M. Perez, Kirill Yu. Spasibko, Polina R. Sharapova +3
Walk-off effects, originating from the difference between the group and phase velocities, limit the efficiency of nonlinear optical interactions. While transverse walk-off can be e…
Schmidt modes in the angular spectrum of bright squeezed vacuum
Polina R. Sharapova, Angela M. Perez, Olga V. Tikhonova +1
We study the spatial properties of high-gain parametric down-conversion (PDC). From the Hamiltonian we find the Schmidt modes, apply the Bloch-Messiah reduction, and calculate anal…
Direct Schmidt number measurement of high-gain parametric down conversion
I. V. Dyakonov, P. R. Sharapova, T. Sh. Iskhakov +1
In this work we estimate the transverse Schmidt number for the bipartite bright squeezed vacuum state by means of second-order intensity correlation function measurement. Assuming…