High-performance guided-wave asynchronous heralded single-photon source

O. Alibart; D. B. Ostrowsky; P. Baldi; S. Tanzilli

doi:10.1364/OL.30.001539

Optics Letters
Vol. 30,
Issue 12,
pp. 1539-1541
(2005)
•https://doi.org/10.1364/OL.30.001539

High-performance guided-wave asynchronous heralded single-photon source

O. Alibart, D. B. Ostrowsky, P. Baldi, and S. Tanzilli

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O. Alibart, D. B. Ostrowsky, P. Baldi, and S. Tanzilli, "High-performance guided-wave asynchronous heralded single-photon source," Opt. Lett. 30, 1539-1541 (2005)

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Abstract

We report on a guided-wave asynchronous heralded single-photon source based on the creation of nondegenerate photon pairs by spontaneous parametric downconversion in a periodically poled lithium niobate waveguide. We show that, by use of the signal photon at 1310 nm as a trigger, a gated detection process permits announcement of the arrival of single photons at 1550 nm at the output of a single-mode optical fiber with a high probability of 0.37. At the same time the multiphoton emission probability is reduced by a factor of 10 compared with Poissonian light sources. Furthermore, the model we have developed to calculate those figures of merit is shown to be accurate. This study can therefore serve as a paradigm for the conception of new quantum communication and computation networks.

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Data $(counts ∕ s)$	HSPS	PDC^a	Molecule^b	NV Center^c	Quantum Dot^{c, d, e}
$N_{T} = 124,302$ ^f	$P_{1} = 0.37 \pm 0.02$	$P_{1} = 0.61$	$P_{1} = 0.047$	$P_{1} = 0.022$	$P_{1} = 0.083$
$S_{R} = 4702$ ^g	$P_{2} = 0.005 \pm 0.001$	$P_{2} = 2 \times 10^{- 4}$	$P_{2} = 5 \times 10^{- 5}$	$P_{2} = 2 \times 10^{- 5}$	$P_{2} = 4 \times 10^{- 4}$
$R_{c} = 8$ ^h	$g^{(2)} (0) = 0.08 \pm 0.02$	$g^{(2)} (0) = 0.002$	$g^{(2)} (0) = 0.046$	$g^{(2)} (0) = 0.07$	$g^{(2)} (0) = 0.14$

Experimental	Calculated	Predicted
$P_{1} = 0.37$	$P_{1} = 0.38 \pm 0.02$	$P_{1} = 0.54$
$P_{2} = 0.005$	$P_{2} = 0.003 \pm 0.001$	$P_{2} = 7 \times 10^{- 4}$
$g^{(2)} (0) = 0.08$	$g^{(2)} (0) = 0.05 \pm 0.02$	$g^{(2)} (0) = 0.005$

Data $(counts ∕ s)$	HSPS	PDC^a	Molecule^b	NV Center^c	Quantum Dot^{c, d, e}
$N_{T} = 124,302$ ^f	$P_{1} = 0.37 \pm 0.02$	$P_{1} = 0.61$	$P_{1} = 0.047$	$P_{1} = 0.022$	$P_{1} = 0.083$
$S_{R} = 4702$ ^g	$P_{2} = 0.005 \pm 0.001$	$P_{2} = 2 \times 10^{- 4}$	$P_{2} = 5 \times 10^{- 5}$	$P_{2} = 2 \times 10^{- 5}$	$P_{2} = 4 \times 10^{- 4}$
$R_{c} = 8$ ^h	$g^{(2)} (0) = 0.08 \pm 0.02$	$g^{(2)} (0) = 0.002$	$g^{(2)} (0) = 0.046$	$g^{(2)} (0) = 0.07$	$g^{(2)} (0) = 0.14$

Experimental	Calculated	Predicted
$P_{1} = 0.37$	$P_{1} = 0.38 \pm 0.02$	$P_{1} = 0.54$
$P_{2} = 0.005$	$P_{2} = 0.003 \pm 0.001$	$P_{2} = 7 \times 10^{- 4}$
$g^{(2)} (0) = 0.08$	$g^{(2)} (0) = 0.05 \pm 0.02$	$g^{(2)} (0) = 0.005$

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Optics Letters