Beyond the diffraction limit via optical amplification

Kellerer, Aglae; Ribak, Erez N.

doi:10.1364/ol.41.003181

Cited by 19 publications

(13 citation statements)

References 18 publications

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“…There are so many other superresolution ideas that going through them all would not be feasible. We list here only a few more: superoscillation [123], amplification [124], and postselection [125]. They either require steep trade-offs with the SNR or have questionable statistics [126,127].…”

Section: F Superoscillation Amplification Postselectionmentioning

confidence: 99%

Resolving starlight: a quantum perspective

Tsang

2019

Contemporary Physics

110

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The wave-particle duality of light introduces two fundamental problems to imaging, namely, the diffraction limit and the photon shot noise. Quantum information theory can tackle them both in one holistic formalism: model the light as a quantum object, consider any quantum measurement, and pick the one that gives the best statistics. While Helstrom pioneered the theory half a century ago and first applied it to incoherent imaging, it was not until recently that the approach offered a genuine surprise on the age-old topic by predicting a new class of superior imaging methods. For the resolution of two sub-Rayleigh sources, the new methods have been shown theoretically and experimentally to outperform direct imaging and approach the true quantum limits. Recent efforts to generalize the theory for an arbitrary number of sources suggest that, despite the existence of harsh quantum limits, the quantum-inspired methods can still offer significant improvements over direct imaging for subdiffraction objects, potentially benefiting many applications in astronomy as well as fluorescence microscopy.

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Section: F Superoscillation Amplification Postselectionmentioning

confidence: 99%

Resolving starlight: a quantum perspective

Tsang

2019

Contemporary Physics

110

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“…communication). Additionally, as we discuss below, QT cannot be placed in the plane conjugated to the pupil, that is -QT cannot be implemented as a small device located after the mirror, as proposed by Kellerer & Ribak (2016). The basic theory of quantum physics and optics indicate that the position of a photon, whose wevefunction is reduced to the size of telescope's aperture, cannot be retrieved with the accuracy exceeding the diffraction limit.…”

Section: Modelmentioning

confidence: 99%

The usability of the optical parametric amplification of light for high-angular-resolution imaging and fast astrometry

Kurek

Stachowski

Banaszek

et al. 2018

Monthly Notices of the Royal Astronomical Society

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High angular resolution imaging is crucial for many applications in modern astronomy and astrophysics. The fundamental diffraction limit constrains the resolving power of both ground-based and spaceborne telescopes. The recent idea of a Quantum Telescope based on the Optical Parametric Amplification (OPA) of the light is aimed at bypassing this limit for imaging of extended sources by an order of magnitude or more. We present an updated scheme of an OPA-based device and a more accurate model of signal amplification by such device. A semiclassical model we present predicts that the noise in such a system will form so called light speckles due to the light interference in the optical path. Based on this model, we analyzed the efficiency of the OPA in increasing the angular resolution of imaging of extended targets and precise localization of a distant point source. According to our new model, OPA is offering a gain in resolved imaging in comparison to classical optics. In the same time, we found that OPA can be more efficient in localizing a single distant point source in comparison to classical telescopes.

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“…As for the practical implementation of probabilistic single-photon amplification to astronomical imaging: in previous publications we have considered the possibility to send the incoming astronomical photon through a medium of excited atoms and to use stimulated emission as the amplification mechanism. 11,12 The noise then takes the form of spontaneous emissions. As mentioned here in introduction, an amplifier adds an average of g noise photons per amplified mode (see for example 6).…”

Section: Probabilistic Amplification In the Context Of Astronomical Imentioning

confidence: 99%

Improving angular resolution of telescopes through probabilistic single-photon amplification?

Kellerer¹,

Marek²,

Lacour

2018

Optical and Infrared Interferometry and Imaging VI

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The use of probabilistic amplification for astronomical imaging is discussed. Probabilistic single photon amplification has been theoretically proven and practically demonstrated in quantum optical laboratories. In astronomy it should allow to increase the angular resolution beyond the diffraction limit at the expense of throughput: not every amplification event is successful -unsuccessful events contain a large fraction of noise and need to be discarded. This article indicates the fundamental limit in the trade-off between gain in angular resolution and loss in throughput. The practical implementation of probabilistic amplification for astronomical imaging remains an open issue.

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Beyond the diffraction limit via optical amplification

Cited by 19 publications

References 18 publications

Resolving starlight: a quantum perspective

Resolving starlight: a quantum perspective

The usability of the optical parametric amplification of light for high-angular-resolution imaging and fast astrometry

Improving angular resolution of telescopes through probabilistic single-photon amplification?

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