Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Журнал прикладной спектроскопии

УХОД ОТ “РЭЛЕЕВСКОЙ КАТАСТРОФЫ” ПРИ ИСПОЛЬЗОВАНИИ АСИММЕТРИЧНЫХ АНТЕНН

I. A. Peshko

Published Jun 30, 2020• 0 citations
OpenAlex

Abstract

We investigate the possibilities of quantum radars the radiating antennas of which consist of two interacting quantum dipoles in coherent or thermal states. It is shown that such asymmetric antennas allow us not only to reach super-resolution but also to overcome the “Rayleigh catastrophe”. In the case of a coherent antenna, an intensity measurement is sufficient to achieve these effects. In the thermal case, it is necessary to measure the temporal correlations of the field.

Related papers

Quantum noise radar: superresolution with quantum antennas by accessing spatiotemporal correlations

Dmitri S. Mogilevtsev, I. A. Peshko, Ilya Karuseichyk +4 more

Measuring simultaneous correlations of intensity fluctuations, one can exploit photon correlations of the imaging source and improve resolution in comparison with the intensity detection. However, in this case also information loss unavoidable for intensity detection eventually leads to the phenomenon known as “the Rayleigh catastrophe”. When the details of the imaged object become much smaller than the certain value defined by the wavelength of the imaging field and parameters of the imaging set-up, the information about any individual detail tends to zero making practically unfeasible inferring object parameters from the measured correlation functions.

International Conference on Electromagnetics in Advanced Applications (ICEAA)•Sep 1, 2019•1 citation

Quantum noise radar: superresolution with quantum antennas by accessing spatiotemporal correlations

I. Peshko, Dmitri S. Mogilevtsev, Ilya Karuseichyk +4 more

We suggest overcoming the "Rayleigh catastrophe" and reaching superresolution for imaging with both spatially and temporally correlated field of a superradiant quantum antenna. Considering far-field radiation of two interacting spontaneously emitting two-level systems, we show that for the measurement of the temporally delayed second-order correlation function of the scattered field, the Fisher information does not tend to zero with diminishing the distance between a pair of scatterers even for non-sharp time-averaged detection. For position estimation of more scatterers, the measurement of the time-delayed function is able to provide a considerable accuracy gain over the zero-delayed function. We also show that the superresolution with the considered quantum antenna can be achieved for both near-field imaging and for estimating the antenna parameters.

arXiv:1905.11939•Optics Express•Sep 26, 2019•15 citations

Quantum Noise Radar: Assessing Quantum Correlations

Dmitri S. Mogilevtsev, I. A. Peshko, Ilya Karuseichyk +4 more

We suggest overcoming the "Rayleigh catastrophe" and reaching superresolution for imaging with both spatially and temporally-correlated field of a superradiant quantum antenna. Considering far-field radiation of two interacting spontaneously emitting two-level systems, we show that for the measurement of the temporally-delayed second-order correlation function of the scattered field, the Fisher information does not tend to zero with diminishing the distance between a pair of scatterers even for non-sharp time-averaged detection. For position estimation of a larger number of scatterers, measurement of the time-delayed function is able to provide a considerable accuracy gain over the zero-delayed function. We show also that the superresolution with the considered quantum antenna can be achieved for both near-field imaging and estimating parameters of the antenna.

IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS)•Nov 1, 2019•1 citation

Генерация пространственно коррелированных неклассических полей с помощью двух- и трехмерных квантовых антенн

Svetlana Vlasenko

We calculate and analyze the fields generated by two- and three-dimensional quantum antennas from identical independent two-level emitters. It is shown that two- and three-dimensional quantum antennas permit to achieve much better localization of the distribution of the emitted biphoton and three-photon field and its correlations than one-dimensional antennas. This makes two- and three-dimensional quantum antennas promising for quantum-radar applications.

Журнал прикладной спектроскопии•Nov 27, 2020•0 citations

Запрещенные углы излучения квантовых антенн

I. A. Peshko

A quantum antenna consisting of a set of two-level atoms situated on one straight line and prepared in different initial states is investigated. It is shown that if the initial state of a quantum antenna is a symmetric Dicke state, then for it a total suppression of radiation in definite directions is possible. Probability of simultaneous photon detections in these directions is equal to zero. This result is impossible for the pseudoclassical symmetric initial state of the antenna, which does not have quantum entanglement, and for such a state the probability of detecting a photon at any angle is always nonzero. The qualitative difference of the interference mechanism for the pseudo-classical and quantum antenna states is described.

Журнал прикладной спектроскопии•Oct 9, 2021•0 citations

Quantum Radars and Lidars: Concepts, realizations, and perspectives

Gregory Ya. Slepyan, Svetlana Vlasenko, Dmitri S. Mogilevtsev +1 more

Quantum radars and lidars are a novel, much-discussed, and rapidly evolving field of quantum science and technology, promising remarkable advantages in such basic tasks as target detection, ranging, and recognition. Quantum radars and lidars have already moved from the realm of theoretical considerations toward experiments, green, and as is the case for lidars, toward practical applications. Here we review the underlying concepts and present the basic configurations of quantum radars and lidars based on photonic entanglement and single-photon detection. We also briefly discuss the methods of producing entangled photons, such as spontaneous parametric down conversion (SPDC), spontaneous four-wave mixing, Josephson parametric amplifiers (JPAs), and quantum antennas. We show that quantum technologies open promising avenues toward the enhancement of signal-to-noise ratio (SNR) and overcoming the Rayleigh limit in radar and lidar systems.

arXiv:2206.12585•IEEE Antennas and Propagation Magazine•Jul 8, 2021•26 citations
We investigate the possibilities of quantum radars the radiating antennas of which consist of two interacting quantum dipoles in coherent or thermal states. It is shown that such asymmetric antennas allow us not only to reach super-resolution but also to overcome the “Rayleigh catastrophe”. In the case of a coherent antenna, an intensity measurement is sufficient to achieve these effects. In the thermal case, it is necessary to measure the temporal correlations of the field.
Measuring simultaneous correlations of intensity fluctuations, one can exploit photon correlations of the imaging source and improve resolution in comparison with the intensity detection. However, in this case also information loss unavoidable for intensity detection eventually leads to the phenomenon known as “the Rayleigh catastrophe”. When the details of the imaged object become much smaller than the certain value defined by the wavelength of the imaging field and parameters of the imaging set-up, the information about any individual detail tends to zero making practically unfeasible inferring object parameters from the measured correlation functions.
We suggest overcoming the "Rayleigh catastrophe" and reaching superresolution for imaging with both spatially and temporally correlated field of a superradiant quantum antenna. Considering far-field radiation of two interacting spontaneously emitting two-level systems, we show that for the measurement of the temporally delayed second-order correlation function of the scattered field, the Fisher information does not tend to zero with diminishing the distance between a pair of scatterers even for non-sharp time-averaged detection. For position estimation of more scatterers, the measurement of the time-delayed function is able to provide a considerable accuracy gain over the zero-delayed function. We also show that the superresolution with the considered quantum antenna can be achieved for both near-field imaging and for estimating the antenna parameters.
We suggest overcoming the "Rayleigh catastrophe" and reaching superresolution for imaging with both spatially and temporally-correlated field of a superradiant quantum antenna. Considering far-field radiation of two interacting spontaneously emitting two-level systems, we show that for the measurement of the temporally-delayed second-order correlation function of the scattered field, the Fisher information does not tend to zero with diminishing the distance between a pair of scatterers even for non-sharp time-averaged detection. For position estimation of a larger number of scatterers, measurement of the time-delayed function is able to provide a considerable accuracy gain over the zero-delayed function. We show also that the superresolution with the considered quantum antenna can be achieved for both near-field imaging and estimating parameters of the antenna.
A quantum antenna consisting of a set of two-level atoms situated on one straight line and prepared in different initial states is investigated. It is shown that if the initial state of a quantum antenna is a symmetric Dicke state, then for it a total suppression of radiation in definite directions is possible. Probability of simultaneous photon detections in these directions is equal to zero. This result is impossible for the pseudoclassical symmetric initial state of the antenna, which does not have quantum entanglement, and for such a state the probability of detecting a photon at any angle is always nonzero. The qualitative difference of the interference mechanism for the pseudo-classical and quantum antenna states is described.
Quantum radars and lidars are a novel, much-discussed, and rapidly evolving field of quantum science and technology, promising remarkable advantages in such basic tasks as target detection, ranging, and recognition. Quantum radars and lidars have already moved from the realm of theoretical considerations toward experiments, green, and as is the case for lidars, toward practical applications. Here we review the underlying concepts and present the basic configurations of quantum radars and lidars based on photonic entanglement and single-photon detection. We also briefly discuss the methods of producing entangled photons, such as spontaneous parametric down conversion (SPDC), spontaneous four-wave mixing, Josephson parametric amplifiers (JPAs), and quantum antennas. We show that quantum technologies open promising avenues toward the enhancement of signal-to-noise ratio (SNR) and overcoming the Rayleigh limit in radar and lidar systems.