Optimizing the quantum interference between single photons and local oscillator with photon correlations
Quantum Science and Technology, vol. 10, pp. 045061
Abstract
Abstract The quantum interference between a coherent state and a single photon is an important tool in continuous variable optical quantum technologies to characterize and engineer non-Gaussian quantum states. Semiconductor quantum dots (QDs), which have recently emerged as a key platform for efficient single-photon generation, could become interesting assets in this context. An essential parameter for interfering single photons and classical fields is the mean wavepacket overlap between both fields. Here, we report on two homodyne photon-correlation techniques enabling the precise measurement of the overlap between a single photon generated by a QD-cavity device and pulsed laser light. The different statistics of interfering fields lead to specific signatures of the quantum interference on the photon correlations at the output of the interfering beam splitter. We compare the behavior of maximized overlap, measuring either the Hong–Ou–Mandel visibility between both outputs or the photon bunching at a single output. Through careful tailoring of the laser light in various degrees of freedom, we achieve a record overlap of 76 % with integrated solid-state sources, which evidences the very low level of noise in our integrated single-photon sources.
Authors 13
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Hubert Lam corresponding
Université Paris-Saclay · Centre de Nanosciences et de Nanotechnologies
Affiliation as printed
C2N, Photonics Department, Université Paris-Saclay, 10 Bd Thomas Gobert, 91120 Palaiseau, France
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Université Paris-Saclay · Centre de Nanosciences et de Nanotechnologies
Affiliation as printed
C2N, Photonics Department, Université Paris-Saclay, 10 Bd Thomas Gobert, 91120 Palaiseau, France
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Petr Steindl Aachen
Leiden University · Université Paris-Saclay · Centre de Nanosciences et de Nanotechnologies
Affiliation as printed
C2N, Photonics Department, Université Paris-Saclay, 10 Bd Thomas Gobert, 91120 Palaiseau, France
Leiden Institute of Physics, Leiden University, 2333 CA Leiden, The Netherlands
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Affiliation as printed
Imperial College London, Quantum Optics and Laser Science, Exhibition Rd, London SW7 2BX, United Kingdom
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Affiliation as printed
Quandela, 7 Rue Léonard de Vinci, 91300 Massy, France
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Affiliation as printed
Quandela, 7 Rue Léonard de Vinci, 91300 Massy, France
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Affiliation as printed
Quandela, 7 Rue Léonard de Vinci, 91300 Massy, France
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Affiliation as printed
Quandela, 7 Rue Léonard de Vinci, 91300 Massy, France
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Université Paris-Saclay · Centre de Nanosciences et de Nanotechnologies
Affiliation as printed
C2N, Photonics Department, Université Paris-Saclay, 10 Bd Thomas Gobert, 91120 Palaiseau, France
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W. Löffler Aachen
Affiliation as printed
Leiden Institute of Physics, Leiden University, 2333 CA Leiden, The Netherlands
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Université Paris-Saclay · Centre de Nanosciences et de Nanotechnologies
Affiliation as printed
C2N, Photonics Department, Université Paris-Saclay, 10 Bd Thomas Gobert, 91120 Palaiseau, France
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Université Paris-Saclay · Centre de Nanosciences et de Nanotechnologies · Quandela (France)
Affiliation as printed
C2N, Photonics Department, Université Paris-Saclay, 10 Bd Thomas Gobert, 91120 Palaiseau, France
Quandela, 7 Rue Léonard de Vinci, 91300 Massy, France
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Université Paris-Saclay · Centre de Nanosciences et de Nanotechnologies
Affiliation as printed
C2N, Photonics Department, Université Paris-Saclay, 10 Bd Thomas Gobert, 91120 Palaiseau, France
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