Eighty kilometre transmission experiment using an InGaAs/InP SPAD-based quantum cryptography receiver operating at 1.55 μm

Hiskett, Philip A.; Bonfrate, G.; Buller, Gerald S.; Townsend, Paul D.

doi:10.1080/09500340108240899

Cited by 14 publications

(12 citation statements)

References 12 publications

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“…The generation of single photons on demand is currently less well developed than the detection of single photons. Consequently, many quantum key distribution experiments use pseudo-single-photon sources such as weak coherent pulses (see [18][19][20][21][22][23] for examples). Weak coherent pulses (WCP) are laser pulses that have been attenuated so that the mean number of photons per pulse (μ) is smaller than 1.…”

Section: Weak Coherent Pulsesmentioning

confidence: 99%

“…Deciding on a value for μ depends on the application and is a compromise between multi-photon pulses and empty pulses. A typical value for μ in quantum key distribution (QKD) experiments is 0.1 (see [18][19][20][21][22][23] for examples) although this is not necessarily the optimal value to ensure the maximum secure bit rate [19,25]. Substituting n = 0 into equation (1) leads to the following formula for the probability of a pulse containing no photons (a vacuum pulse):…”

Section: Weak Coherent Pulsesmentioning

confidence: 99%

See 1 more Smart Citation

Single-photon generation and detection

Buller¹,

Collins²

2009

Meas. Sci. Technol.

240

174

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Section: Weak Coherent Pulsesmentioning

confidence: 99%

Section: Weak Coherent Pulsesmentioning

confidence: 99%

Single-photon generation and detection

Buller¹,

Collins²

2009

Meas. Sci. Technol.

240

174

View full text Add to dashboard Cite

show abstract

“…The results are based on calculations assuming the following parameter values, which are held constant for each topology [1,13,14,20,21] :…”

Section: Parameter Valuesmentioning

confidence: 99%

Comparison of 4 Multi-User Passive Network Topologies for 3 Different Quantum Key Distribution

Garzia¹,

Cusani²

2010

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The purpose of this paper is to compare the performance of four passive optical network topologies in implementing multi-user quantum key distribution, using 3 protocols proposed by quantum cryptography (B92, EPR, and SSP). The considered networks are the passive-star network, the optical-ring network based on the Signac interferometer, the wavelength-routed network, and the wavelength-addressed bus network. The quantum bit-error rate and sifted key rate for each of these topologies are analysed to determine their suitability for providing quantum key distribution-service to networks of various sizes. The efficiency of the three considered protocols is also determined

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“…Herein, it was found that the shape of the curves depends on the holdoff time t ho of SPAD which was varied for different series of experiment. Figure 2 compare experimental SRA data with theoretical equation (3). In figure 2a, the experimental data were obtained with a time t ho = 20µs.…”

mentioning

confidence: 97%

Sequences of the ranged amplitudes as a universal method for fast noninvasive characterization of SPAD dark counts

et al. 2017

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Single-photon detectors based on avalanche photodiodes (SPADs) are key elements of many modern highly sensitive optical systems. One of the bottlenecks of such detectors is an afterpulsing effect, which limits detection rate and requires an optimal hold-off time. In this paper, we propose a novel approach for statistical analysis of SPAD dark counts, and we demonstrate its usefulness for the search of the experimental condition where the afterpulsing effect can be strongly eliminated. This approach exploits a sequence of ranked time intervals between the dark counts and does not contain a complex mathematical analysis of the experimental data. We show that the approach can be efficiently applied for a small number of the dark counts, and it seems to be very beneficial for practical fast characterization of SPAD devices.

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Eighty kilometre transmission experiment using an InGaAs/InP SPAD-based quantum cryptography receiver operating at 1.55 μm

Cited by 14 publications

References 12 publications

Single-photon generation and detection

Single-photon generation and detection

Comparison of 4 Multi-User Passive Network Topologies for 3 Different Quantum Key Distribution

Sequences of the ranged amplitudes as a universal method for fast noninvasive characterization of SPAD dark counts

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