# Absolute calibration of a charge-coupled device camera with twin beams

@article{RuoBerchera2014AbsoluteCO, title={Absolute calibration of a charge-coupled device camera with twin beams}, author={Ivano Ruo-Berchera and Alice Meda and Ivo Pietro Degiovanni and Giorgio Brida and Maria Luisa Rastello and Marco Genovese}, journal={Applied Physics Letters}, year={2014}, volume={105}, pages={101113} }

We report on the absolute calibration of a Charge-Coupled Device (CCD) camera by exploiting quantum correlation. This 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 characterization of (scientific) CCDs used in…

## 19 Citations

Absolute calibration of an EMCCD camera by quantum correlation, linking photon counting to the analog regime.

- PhysicsOptics letters
- 2016

A bridge is established between two regions of the optical measurements that up to now have been based on completely different standards, detectors, and measurement techniques to accurately predict the detector behavior in the photocounting regime and vice versa.

Absolute quantum efficiency calibration of analog detectors with twin photon current

- Physics
- 2017

Correlated photon is exploited as a tool for absolute quantum efficiency calibration of photon detectors working in the photon-counting regime. We extend the method from photon-counting regime to the…

Quantum imaging with sub-Poissonian light: challenges and perspectives in optical metrology

- PhysicsMetrologia
- 2019

Non-classical correlations in optical beams offer an unprecedented opportunity for surpassing the conventional limits of sensitivity and resolution in optical measurements and imaging, especially,…

Quantum differential ghost microscopy

- PhysicsPhysical Review A
- 2019

Quantum correlations become formidable tools for beating classical capacities of measurement. Preserving these advantages in practical systems, where experimental imperfections are unavoidable, is a…

Unbiased estimation of an optical loss at the ultimate quantum limit with twin-beams

- PhysicsScientific Reports
- 2018

It is demonstrated that quantum-correlated pair of beams, named “twin-beam state”, can reach the ultimate sensitivity for all energy regimes (even less than one photon per mode) with the simplest measurement strategy.

Realization of the first sub-shot-noise wide field microscope

- PhysicsLight, science & applications
- 2017

This letter describes the realization of a sub-shot-noise wide field microscope based on spatially multi-mode non-classical photon number correlations in twin beams, achieving the best sensitivity per incident photon reported in absorption microscopy.

The first sub shot noise wide field microscope

- PhysicsOptical Engineering + Applications
- 2017

Quantum technologies promise to overcome by far the limits of the classical schemes. However, the present challenge is to overpass the limits of proof of principle demonstrations to approach real…

Experimental quantum reading with photon counting

- PhysicsScience Advances
- 2021

It is shown, theoretically and experimentally, that quantum advantage is obtained by practical photon-counting measurements combined with a simple maximum-likelihood decision and that this receiver combined with an entangled two-mode squeezed vacuum source is able to outperform any strategy based on statistical mixtures of coherent states for the same mean number of input photons.

Real applications of quantum imaging

- Physics
- 2016

In previous years the possibility of creating and manipulating quantum states of light has paved the way for the development of new technologies exploiting peculiar properties of quantum states, such…

Overcoming classical measurement limits through photon number correlations: an overview of a few recent results

- PhysicsOptics & Photonics - Optical Engineering + Applications
- 2014

In this proceeding we discuss as quantum correlations can enhance measurements capabilities [1,2,3,6], discussing few examples as target detection in a noisy environment and holometer. The first [2]…

## References

SHOWING 1-10 OF 47 REFERENCES

Detection of multimode spatial correlation in PDC and application to the absolute calibration of a CCD camera.

- Physics, Computer ScienceOptics express
- 2010

A new method based on the spatial entanglement for the absolute calibration of analog detectors based on measuring the sub-shot-noise intensity correlation between two branches of parametric down conversion, containing many pairwise correlated spatial modes is proposed.

Single-photon detector calibration by means of conditional polarization rotation

- Physics
- 2005

We propose a new scheme for measuring the quantum efficiency of a single-photon detection apparatus by using polarization-entangled states. The scheme consists of measuring the polarization of a…

Absolute efficiency estimation of photon-number-resolving detectors using twin beams.

- PhysicsOptics express
- 2009

The photon-pair detector calibration method developed by Klyshko for single-photon detectors is generalized to take advantage of the higher dynamic range and additional information provided by photon-number-resolving detectors, making the calibration more robust.

Towards an uncertainty budget in quantum-efficiency measurements with parametric fluorescence

- Physics
- 2000

The aim of this paper is a critical investigation of some correction factors in the quantum-efficiency calibration of photodetectors, in the photon-counting regime, by means of correlated photons…

Measurement of sub-shot-noise correlations of spatial fluctuations in the photon-counting regime.

- PhysicsPhysical review letters
- 2008

Experimental results overcome the standard quantum limit shot-noise level without subtraction of the variance of the detection noise.

Imaging high-dimensional spatial entanglement with a camera

- PhysicsNature communications
- 2012

It is shown that modern electron-multiplying charge-coupled device cameras can measure correlations in both position and momentum across a multi-pixel field of view and demonstrate Einstein–Podolsky–Rosen type correlations by more than two orders of magnitude.

High-sensitivity imaging with multi-mode twin beams

- Physics
- 2008

Twin entangled beams produced by single-pass parametric down-conversion (PDC) offer the opportunity to detect weak amount of absorption with an improved sensitivity with respect to standard…

Possibility of absolute calibration of analog detectors by using parametric downconversion: a systematic study

- Physics
- 2006

Prompted by the need for various studies ranging from quantum information to foundations of quantum mechanics, we systematically study the possibility of the absolute calibration of analog…

A Quantum Laser Pointer

- PhysicsScience
- 2003

A quantum laser pointer is experimentally produced, a beam of light whose direction is measured with a precision greater than that possible for a usual laser beam, providing a demonstration of multichannel spatial squeezing and its application to the improvement of beam positioning sensitivity and, more generally, to imaging.

Radiometric calibration of single photon detectors by a single photon source based on NV-centers in diamond

- Physics
- 2011

A widespread use of various relative calibration techniques is established in order to realize reliable and low uncertainty measurements of the detection efficiency, which is one key parameter…