Heralded single photon source at 1550 nm from pulsed parametric down conversion

Soujaeff, A.; Takeuchi, Shigeki; Sasaki, Keiji; Hasegawa, Tetsuya; Matsui, Masanao

doi:10.1080/09500340600742239

Cited by 23 publications

(27 citation statements)

References 16 publications

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“…Such a single photon source will be an alternative candidate to the reported heralding single photon sources with the efficiencies of 20 to 30 %. 29,30 Another future target will be optical quantum computation, where the loss threshold of 66 % has been suggested for a certain condition. 31 Efficient photon collection of single nanoemitters itself is possible also by using high-NA objectives such as solid immersion lenses (SILs).…”

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confidence: 99%

Highly Efficient Coupling of Photons from Nanoemitters into Single-Mode Optical Fibers

et al. 2011

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Highly efficient coupling of photons from nanoemitters into single-mode optical fibers is demonstrated using tapered fibers. 7.4 ± 1.2 % of the total emitted photons from single CdSe/ZnS nanocrystals were coupled into a 300-nm-diameter tapered fiber. The dependence of the coupling efficiency on the taper diameter was investigated and the coupling efficiency was found to increase exponentially with decreasing diameter. This method is very promising for nanoparticle sensing and single-photon sources.Collection of fluorescence photons from single nanoemitters is of fundamental importance in fields such as quantum information and biological sensing. For examples, single nanoemitters such

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confidence: 99%

Highly Efficient Coupling of Photons from Nanoemitters into Single-Mode Optical Fibers

et al. 2011

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“…A heralded single photon source in bulk crystal with a pulsed pump was also demonstrated in [70]. Here the heralded photons were at 1550 nm, more suited for fiberbased QKD applications, while the heralding photons were in the visible.…”

Section: Crystalsmentioning

confidence: 93%

Heralded single photon sources: a route towards quantum communication technology and photon standards

Castelletto

Scholten

2008

Eur. Phys. J. Appl. Phys.

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Abstract. Single photon counting, based on single photon sources and detectors, is a key ingredient for certain applications aiming at new quantum information technologies. Quantum cryptography, quantum radiometry, distributed quantum computing, as well as adjacent technologies such as biomedical and astronomical imaging, and low power classical communication also rely on single-photon technology. This paper reviews the present status of single photon sources and related counting measurement techniques, based on correlated (or heralded) photons in parametric down-conversion, and their possible impact on the above mentioned technologies, as well as an assessment for photon standards in the future. PACS

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“…For QKD at 1550 nm, we realized a source using pulsed non degenerate type I SPDC (see reference [16] for more details). A femtosecond pump (150 fs) at 390 nm is focused inside a 5 mm BBO crystal which is cut to give a photon pair with signal photon at 521 nm and idler photon at 1550 nm.…”

Section: Principlementioning

confidence: 99%

“…A HSPS using non-degenerate parametric downconversion with femto-second laser pumping was used in our experiment [16]. The photon source was coupled to a one-way QKD system realized with two unbalanced Mach-Zehnder interferometers and phase modulators.…”

Section: Introductionmentioning

confidence: 99%

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Quantum key distribution at 1550 nm using a pulse heralded single photon source

Soujaeff¹,

Nishioka²,

Hasegawa³

et al. 2007

Opt. Express

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Abstract:Quantum key distribution with pulsed heralded single photon source was performed over 40 km of fiber for the first time to our knowledge. QBER was measured to be 4.23% suggesting security against unconditional attack. 58-60 (1986). 19. Using a model presented in reference [10,11,16], we estimated the average number of photon pairs μ at the crystal output to be 0.168 at the maximum pump power (195 mW), and 3 pairs event probability at the crystal ouput to be a fraction equal to 0.056 of the two pairs generation probability for this pump power. 20. C. H. Bennett, "Quantum cryptography using any two nonorthogonal states," Phys. Rev. Lett. 68, 3121-3124 (1992)

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Heralded single photon source at 1550 nm from pulsed parametric down conversion

Abstract: Heralding of single photon at 1550 nm from pump pulsed non degenerate spontaneous parametric downconversion is demonstrated. P(1) and P(2) of our source are 0.1871 and 2.4 µ 10 -3 respectively. Triggering of our source is 2.16 µ 10 5 trigger.s -1 . This source may be used in QKD system.

Cited by 23 publications

References 16 publications

Highly Efficient Coupling of Photons from Nanoemitters into Single-Mode Optical Fibers

Highly Efficient Coupling of Photons from Nanoemitters into Single-Mode Optical Fibers

Heralded single photon sources: a route towards quantum communication technology and photon standards

Quantum key distribution at 1550 nm using a pulse heralded single photon source

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