Absolute calibration of analog detectors using stimulated parametric down conversion

Brida, G.; Chekhova, Maria V.; Genovese, M.; Rastello, María Luisa; Berchera, I. Ruo

doi:10.1080/09500340802318317

Cited by 12 publications

(8 citation statements)

References 24 publications

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“…On one side this enable the use of analog detectors for quantum enhanced imaging and sensing applications (See for example the Sec. 5,6,7) and on the other side it allows the absolute calibration of the devices [195,196,197,198,215,119].…”

Section: Absolute Calibration For Analog Spatial Resolving Detectorsmentioning

confidence: 99%

Photon-number correlation for quantum enhanced imaging and sensing

Meda¹,

Losero²,

Samantaray³

et al. 2017

J. Opt.

111

106

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In this review we present the potentialities and the achievements of the use of non-classical photon number correlations in twin beams (TWB) states for many applications, ranging from imaging to metrology. Photon number correlations in the quantum regime are easy to be produced and are rather robust against unavoidable experimental losses, and noise in some cases, if compared to the entanglement, where loosing one photon can completely compromise the state and its exploitable advantage. Here, we will focus on quantum enhanced protocols in which only phase-insensitive intensity measurements (photon number counting) are performed, which allow probing transmission/absorption properties of a system, leading for example to innovative target detection schemes in a strong background. In this framework, one of the advantages is that the sources experimentally available emit a wide number of pairwise correlated modes, which can be intercepted and exploited separately, for example by many pixels of a camera, providing a parallelism, essential in several applications, like wide field sub-shot-noise imaging and quantum enhanced ghost imaging. Finally, non-classical correlation enables new possibilities in quantum radiometry, e.g. the possibility of absolute calibration of a spatial resolving detector from the on-off-single photon regime to the

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Section: Absolute Calibration For Analog Spatial Resolving Detectorsmentioning

confidence: 99%

Photon-number correlation for quantum enhanced imaging and sensing

Meda¹,

Losero²,

Samantaray³

et al. 2017

J. Opt.

111

106

View full text Add to dashboard Cite

show abstract

“…In particular, demand for precise calibration of detectors both in mesoscopic light regime it is relevant not only from the point of view of the development of quantum technologies, but also for establishing a connection between the light intensity level typical of classical radiometric measurements and the quantum radiometry operating at single-photon level [8,9]. Quantum correlations in twin beams offer an opportunity for reaching this goal, as discussed in [26][27][28][29].…”

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confidence: 99%

Absolute calibration of a CCD camera with twin beams

Ruo-Berchera,

Meda,

Degiovanni

et al. 2014

Preprint

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We report on the absolute calibration of a CCD camera by exploiting quantum correlation. This novel method exploits a certain number of spatial pairwise quantum correlated modes produced by spontaneous parametric-down-conversion. We develop a measurement model accounting for all the uncertainty contributions, and we reach the relative uncertainty of 0.3% in low photon flux regime. This represents a significant step forward for the characterizaion of (scientific) CCDs used in mesoscopic light regime.

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“…The accuracy of these techniques has improved by nearly one order of magnitude every ten years, and is currently of the order of 10 −3 . These systems are limited to the photon-counting regime, with a recent theoretical proposal for extension to higher photon rates [4].In this letter, we present a radiometer that overcomes these limitations and works over a broad range of powers: from the single photon level, up to several tens of nW (≈ 10 11 photons/s), i.e. from the quantum regime to the classical regime.…”

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confidence: 99%

mentioning

confidence: 99%

Quantum Cloning for Absolute Radiometry

et al. 2010

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In the quantum regime information can be copied with only a finite fidelity. This fidelity gradually increases to 1 as the system becomes classical. In this article we show how this fact can be used to directly measure the amount of radiated power. We demonstrate how these principles could be used to build a practical primary standard.Since its inception quantum mechanics has had a deep tie with radiometry, the science of measurement of electromagnetic radiation. The electrical substitution radiometer, developed by Lummer and Kurlbaum in 1892 [1], was used to observe the spectral distribution of a heated black body. In 1900 Max Planck was able to describe this distribution by assuming that electromagnetic radiation could only be emitted in multiples of an energy quantum E = h ν. This discovery not only provided an accurate law relating the radiated spectral density to temperature, but laid the foundations of quantum physics. The electrical substitution radiometer is still used as the primary standard for spectral radiance by many metrology laboratories. These systems have been improved over more than a century and can now achieve absolute uncertainties better than 10 −4 , when operated at relatively high powers [2].More recently, nonlinear optical effects such as Spontaneous Parametric Down Conversion have provided a new primary standard based on the correlations of quantum fields [3]. The accuracy of these techniques has improved by nearly one order of magnitude every ten years, and is currently of the order of 10 −3 . These systems are limited to the photon-counting regime, with a recent theoretical proposal for extension to higher photon rates [4].In this letter, we present a radiometer that overcomes these limitations and works over a broad range of powers: from the single photon level, up to several tens of nW (≈ 10 11 photons/s), i.e. from the quantum regime to the classical regime. In fact, our system is able to provide an absolute measure of spectral radiance by relying on a particular aspect of the quantum to classical transition: as the number of information carriers (photons) grows, so does the fidelity with which they can be cloned. For an optimal cloning machine [5][6][7][8][9] this relation can be derived ab initio [10,11] so that a measurement of the fidelity of the cloning process is equivalent, as we shall see below, to an absolute measurement of spectral radiance.Optimal cloning has been demonstrated in a variety of systems [6,8,9]. Stimulated emission in atomic systems is particularly practical as high gains can be easily achieved and the entire system can be implemented in-fibre which both ensures the presence of a single spatial mode and makes the system readily applicable, though not limited, to current telecom technology.Principle of operation -The aim of this experiment is to produce an absolute measurement of luminous power P in .We will do this by using an optimal Universal Quantum Cloning Machine (QCM). As we shall see such a device is able to directly relate a relative measurement of ...

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Absolute calibration of analog detectors using stimulated parametric down conversion

Cited by 12 publications

References 24 publications

Photon-number correlation for quantum enhanced imaging and sensing

Photon-number correlation for quantum enhanced imaging and sensing

Absolute calibration of a CCD camera with twin beams

Quantum Cloning for Absolute Radiometry

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