Correlation measurements with on-off detectors

Sperling, Jan; Vogel, W.; Agarwal, G. S.

doi:10.1103/physreva.88.043821

Cited by 45 publications

(92 citation statements)

References 42 publications

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“…Recently, alternative hierarchies of kth-order nonclassicality witnesses have been formulated, based on the 'click' statistics of on-off detectors [16][17][18]. Compared to the conditions on the 'click' statistics, an advantage of conditions (3) is that they are formulated in terms of normalized CFs, which are invariant to optical losses or detection inefficiency [13].…”

Section: Witnessing Nonclassicalitymentioning

confidence: 99%

Multiphoton nonclassical light from clusters of single-photon emitters

et al. 2018

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We study nonclassical features of multiphoton light emitted by clusters of single-photon emitters. As signatures of nonclassicality, we use violation of inequalities for normalized correlation functions of different orders or the probabilities of multiphoton detection. In particular, for clusters of 2-14 colloidal CdSe/CdS dot-in-rods we observe antibunching and nonclassicality of up to the fourthorder. Surprisingly, violation of certain classical inequalities gets even more pronounced for larger clusters.

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Section: Witnessing Nonclassicalitymentioning

confidence: 99%

Multiphoton nonclassical light from clusters of single-photon emitters

et al. 2018

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“…1. It is worth mentioning that in this form P N is proportional to the generating function of the click statistics, which has been used to formulate nonclassicality criteria [21]. Denoting by P α ðβÞ the P representation (1) of the displaced state ρ α , the click-counting phase-space function can be written as …”

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confidence: 99%

Nonclassicality Phase-Space Functions: More Insight with Fewer Detectors

2015

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Systems of on-off detectors are well established for measuring radiation fields in the regime of small photon numbers. We propose to combine these detector systems with unbalanced homodyning with a weak local oscillator. This approach yields phase-space functions, which represent the click counterpart of the s parametrized quasiprobabilities of standard photoelectric detection theory. This introduced class of distributions can be directly sampled from the measured click-counting statistics. Therefore, our technique visualizes nonclassical effects without further data processing. Surprisingly, a small number of on-off diodes can yield more insight than perfect photon number resolution. Quantum signatures in the particle and wave domain of the quantized radiation field, as shown by photon number and squeezed states, respectively, will be uncovered in terms of negativities of the sampled phase-space functions. Application in the vast fields of quantum optics and quantum technology will benefit from our efficient nonclassicality characterization approach.

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“…In previous works, we have shown that the binomial form requires a reformulation of nonclassicality conditions [24,28]. Moments of the click counting statistics can be used to identify quantum correlations -even between multiple detector systems.…”

Section: Heralded State Preparation With Click Detector Systemsmentioning

confidence: 99%

“…Fourth, additional features may appear when generalized detection processes are involved, e.g., two-photon absorption within the diodes, cf. [28]. Similarly, arbitrary noise models may be included at any stage of the protocol description.…”

Section: Fig 7: (Color Online)mentioning

confidence: 99%

“…sub-binomial, light [24,25]. A source of correlated photon pairs together with the considered class of detectors can be used, for example, to identify spatial correlations [26][27][28] or to perform a detector calibration [29,30]. Moreover, these states allow one to predict the presence of a photon in one mode, if a photon is detected in the other one.…”

Section: Introductionmentioning

confidence: 99%

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Quantum state engineering by click counting

2014

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We derive an analytical description for quantum state preparation using systems of on-off detectors. Our method will apply the true click statistics of such detector systems. In particular, we consider heralded quantum state preparation using correlated light fields, photon addition, and photon subtraction processes. Using a post-selection procedure to a particular number of clicks of the detector system, the output states reveal a variety of quantum features. The rigorous description allows the identification and characterization of fundamentally unavoidable attenuations within given processes. We also generalize a known scenario of noiseless amplification with click detectors for the purpose of the preparation of various types of nonclassical states of light. Our exact results are useful for a choice of experimental parameters to realize a target state.

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Correlation measurements with on-off detectors

Cited by 45 publications

References 42 publications

Multiphoton nonclassical light from clusters of single-photon emitters

Multiphoton nonclassical light from clusters of single-photon emitters

Nonclassicality Phase-Space Functions: More Insight with Fewer Detectors

Quantum state engineering by click counting

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