High Speed HPD for Photon Counting

Fukasawa, A.; Haba, J.; Kageyama, Akihiro; Nakazawa, Hiroyuki; Suyama, Motohiro

doi:10.1109/tns.2008.918736

Cited by 31 publications

(16 citation statements)

References 12 publications

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“…Photoelectrons generated at the photocathode are focused onto the smaller area avalanche diode and undergo avalanche gain to produce a detectable current pulse. This technique has the advantage over the PMT that there is a lower spread of transit times for the electrons and, hence, a lower timing jitter [159]. These detectors exhibit good sensitivity, and would be particularly suitable for applications requiring a large detection area.…”

Section: Hybrid Photodetectormentioning

confidence: 99%

Single-photon generation and detection

Buller¹,

Collins²

2009

Meas. Sci. Technol.

243

174

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Section: Hybrid Photodetectormentioning

confidence: 99%

Single-photon generation and detection

Buller¹,

Collins²

2009

Meas. Sci. Technol.

243

174

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show abstract

“…В терагерцевом диапазоне частот эффективность детектирования электромагнитных волн при помощи традиционных фотоэлектронных умножителей и полупроводников с малой шириной запрещенной зоны существенно снижается [5]. Хорошей альтернативой полупроводниковым однофотонным детекторам в этом диапазоне являются однофотонные детекторы на основе сверхпроводников за счет малой энергетической щели в спектре возбуждений.…”

Section: поступило в редакцию 24 апреля 2018 гunclassified

Резонансное Туннелирование Электромагнитных Волн Для Увеличения Эффективности Болометрических Фотодетекторов

Богацкая¹,

Кленов²,

Терешонок³

et al. 2018

Письма В Журнал Технической Физики

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A method for enhancing the efficiency of bolometric photodetectors is presented. The method utilizes the analogy between the process of tunneling of a flux of quantum particles through a potential barrier and the propagation of electromagnetic waves within a nontransparent medium. The calculation results demonstrate that the fraction of radiation absorbed in a detector at a certain IR frequency may be close to unity if one chooses the right thickness and permittivity of the resonator substrate below a thin metal (superconductor) layer.

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“…It takes the form of an inequality involving terms from the photon number distribution of the mode under investigation. Since photon number distributions may be effectively reconstructed [39,40] and in some cases also directly measured [41,42], this method has a clear experimental advantage. Klyshko showed that an equivalence between a phase-averaged P function,…”

Section: E Klyshko Criterionmentioning

confidence: 99%

Finite-time quantum-to-classical transition for a Schrödinger-cat state

et al. 2011

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The transition from quantum to classical, in the case of a quantum harmonic oscillator, is typically identified with the transition from a quantum superposition of macroscopically distinguishable states, such as the Schrödinger-cat state, into the corresponding statistical mixture. This transition is commonly characterized by the asymptotic loss of the interference term in the Wigner representation of the cat state. In this paper we show that the quantum-to-classical transition has different dynamical features depending on the measure for nonclassicality used. Measures based on an operatorial definition have well defined physical meaning and allow a deeper understanding of the quantum-to-classical transition. Our analysis shows that, for most nonclassicality measures, the Schrödinger-cat state becomes classical after a finite time. Moreover, our results challenge the prevailing idea that more macroscopic states are more susceptible to decoherence in the sense that the transition from quantum to classical occurs faster. Since nonclassicality is a prerequisite for entanglement generation our results also bridge the gap between decoherence, which is lost only asymptotically, and entanglement, which may show a sudden death. In fact, whereas the loss of coherences still remains asymptotic, we emphasize that the transition from quantum to classical can indeed occur at a finite time.

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High Speed HPD for Photon Counting

Cited by 31 publications

References 12 publications

Single-photon generation and detection

Single-photon generation and detection

Резонансное Туннелирование Электромагнитных Волн Для Увеличения Эффективности Болометрических Фотодетекторов

Finite-time quantum-to-classical transition for a Schrödinger-cat state

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