Photonic Astronomy and Quantum Optics

Dravins, Dainis

doi:10.1007/978-1-4020-6518-7_6

Cited by 9 publications

(5 citation statements)

References 147 publications

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“…Astronomical quantum optics may help to clarify emission processes in natural laser sources and in the environments of compact and energetic objects. Time resolutions of nanoseconds are required, as are large photon fluxes, making photonic astronomy very timely in an era of forthcoming extremely large telescopes [83][84] .…”

Section: Beyond Intensity Interferometry: Astronomical Quantum Opticsmentioning

confidence: 99%

Intensity interferometry: optical imaging with kilometer baselines

Dravins

2016

SPIE Proceedings

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Optical imaging with microarcsecond resolution will reveal details across and outside stellar surfaces but requires kilometer-scale interferometers, challenging to realize either on the ground or in space. Intensity interferometry, electronically connecting independent telescopes, has a noise budget that relates to the electronic time resolution, circumventing issues of atmospheric turbulence. Extents up to a few km are becoming realistic with arrays of optical air Cherenkov telescopes (primarily erected for gamma-ray studies), enabling an optical equivalent of radio interferometer arrays. Pioneered by Hanbury Brown and Twiss, digital versions of the technique have now been demonstrated, reconstructing diffraction-limited images from laboratory measurements over hundreds of optical baselines. This review outlines the method from its beginnings, describes current experiments, and sketches prospects for future observations.

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Section: Beyond Intensity Interferometry: Astronomical Quantum Opticsmentioning

confidence: 99%

Intensity interferometry: optical imaging with kilometer baselines

Dravins

2016

SPIE Proceedings

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“…It is based on measuring the variation in correlation between photon streams measured by two telescopes looking at the same source as the telescope spacing is changed. New fast detectors may make measurement of quantum fluctuations possible, using similar systems to that of Hanbury Brown and Twiss, opening up new discovery space, as suggested by Dravins [24].…”

Section: Ground-based Telescopesmentioning

confidence: 97%

Future technologies for optical and infrared telescopes and instruments

Cunningham

2009

Exp Astron

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The theme of this conference is the evolution of telescopes over the last 400 years. I present my view on what the major leaps of technology have been, and attempt to predict what new technologies could come along in the next 50 years to change the way we do astronomy and help us make new discoveries. Are we approaching a peak of innovation and discovery, and will this be followed by a slow decline? Or are there prospects for even further technology leaps and consequent new discoveries? Will global resource and financial crises bring an end to our great ambitions, or will we continue with bigger telescopes and more ambitious space observatories?

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“…Such an instrument (which does not require good seeing, nor adaptive optics, nor a filled telescope aperture) was evaluated within the QuantEYE instrument study made already for the OWL telescope, and the concept has since been verified by the Iqueye visiting instrument used at ESO in Chile. Other physical observables can be extracted from nanosecond photon statistics [39,40]. A somewhat related method to the above can be used for measuring the second-order temporal coherence of light, reaching a spectral resolution orders of magnitude beyond what is feasible with hardware spectrometers.…”

Section: Intensity Interferometry and Photon Correlation Spectroscopymentioning

confidence: 99%

High Time Resolution Astrophysics in the Extremely Large Telescope Era : White Paper

Shearer

2011

Proceedings of High Time Resolution Astrophysics (HTRA) IV - The Era of Extremely Large Telescopes — PoS(HTRA-IV)

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High Time Resolution Astrophysics (HTRA) concerns itself with observations on short scales normally defined as being lower than the conventional read-out time of a CCD. As such it is concerned with condensed objects such as neutron stars, black holes and white dwarfs, surfaces with extreme magnetic reconnection phenomena, as well as with planetary scale objects through transits and occultations. HTRA is the only way to make a major step forward in our understanding of several important astrophysical and physical processes; these include the extreme gravity conditions around neutron stars and stable orbits around stellar mass black holes. Transits, involving fast timing, can give vital information on the size of, and satellites around exoplanets. In the realm of fundamental physics very interesting applications lie in the regime of ultra-high time resolution, where quantum-physical phenomena, currently studied in laboratory physics, may be explored. From the short descriptions given below it can be seen that HTRA science covers the full gamut of observational optical/IR astronomy from asteroids to γ-rays bursts, contributing to four out six of AstroNet's fundamental challenges described in their Science Vision for European Astronomy. Giving the European-Extremely Large Telescope (E-ELT) an HTRA capability is therefore of paramount importance. We suggest that there are three possibilities for HTRA and E-ELT. These are, firstly giving the E-ELT first light engineering camera an HTRA science capability. Secondly, to include a small HTRA instrument within another instrument -Micado is a possibility here. Finally, to have separate fibre feeds from, say Optimos, to a dedicated HTRA instrument. In this case a small number of fibres (<10) could be positioned and would provide a flexible and low cost means to have an HTRA capability. By the time of E-ELT first light, there should be a number of significant developments in fast detectors, in particular in the infra-red (IR) region -already today small photon-counting IR arrays have been developed that should be mainstream technology in the next years.

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Photonic Astronomy and Quantum Optics

Cited by 9 publications

References 147 publications

Intensity interferometry: optical imaging with kilometer baselines

Intensity interferometry: optical imaging with kilometer baselines

Future technologies for optical and infrared telescopes and instruments

High Time Resolution Astrophysics in the Extremely Large Telescope Era : White Paper

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