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분자 분광학 및 동력학 연구단
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Frequency comb single-photon interferometry

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Title
Frequency comb single-photon interferometry
Author(s)
Sun Kyung Lee; Noh Soo Han; Tai Hyun Yoon; Minhaeng Cho
Publication Date
2018-09
Journal
COMMUNICATIONS PHYSICS, v.1, no., pp.51 -
Publisher
NATURE PUBLISHING GROUP
Abstract
Due to their frequency scaling and long-term coherence, frequency combs at the single-photon level can provide a fascinating platform for developments in quantum technology. Here we demonstrate frequency comb single-photon interferometry in an unheralded manner. We are able to induce coherence by erasing the which-way information of path-entangled photon pairs. The photon pairs are prepared using a dual parametric down-conversion pumped by a highly stable frequency comb laser and an ultra-narrow seed laser. This is conducted at the extremely low-conversion efficiency regime. The unique feature of our quantum interferometer is that the induced one-photon interference of the path-encoded single photons (signal), with multiple frequency components, is observed with a unit visibility without heralding conjugate photons (idler). We demonstrate that quantum information and frequency comb technology can be combined to realize quantum information platforms. We expect this will contribute to the application of quantum information and optical measurements beyond the classical limit. © The Author(s) 2018
URI
https://pr.ibs.re.kr/handle/8788114/5527
ISSN
2399-3650
Appears in Collections:
Center for Molecular Spectroscopy and Dynamics(분자 분광학 및 동력학 연구단) > Journal Papers (저널논문)
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