Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR)

Nonlocal Dispersion Control of a Localized Single-Photon Wave Packet

So-Young Baek, Osung Kwon, Yoon-Ho Kim

Published Aug 1, 2007• 2 citations
Publisher

Abstract

We report temporal spreading of a localized single-photon wave packet, conditionally prepared by detecting the trigger photon of the photon pair born in the process of spontaneous parametric down-conversion, propagating through a single-mode optical fiber. The wave packet broadening is shown to be controllable by spectrally filtering the trigger photon.

DOI
10.1109/cleopr.2007.4391576

Related papers

Nonlocal dispersion control of a single-photon waveform

So-Young Baek, Osung Kwon, Yoon-Ho Kim

We demonstrate explicitly that a single-photon waveform, conditionally prepared by detecting the trigger photon of the photon pair born in the process of spontaneous parametric down-conversion, becomes broadened and chirped as the result of propagation through a single-mode optical fiber. The pulselike broadening of the single-photon waveform, due to the group velocity dispersion of the optical fiber, is shown to be controllable in a nonlocal way by spectrally filtering the trigger photon.

Physical Review A•Jul 10, 2008•30 citations

Temporal shaping of a heralded single-photon wave packet

So-Young Baek, Osung Kwon, Yoon-Ho Kim

We report the temporal shaping and nonlocal control of a heralded single-photon wave packet, conditionally prepared by detecting the idler trigger photon of the signal-idler photon pair born in the process of spontaneous parametric down-conversion.

Conference on Lasers and Electro-Optics•May 1, 2008•0 citations

Temporal shaping of a heralded single-photon wave packet

So-Young Baek, Osung Kwon, Yoon-Ho Kim

We experimentally demonstrate temporal shaping of a heralded single-photon wave packet, prepared by conditional measurement of the idler photon of the entangled photon pair in the process of spontaneous parametric down-conversion. The heralded single-photon wave packet for the signal photon, after being tailored with the help of chirp broadening and interference effects, was observed directly by measuring the time-correlated single-photon-counting histogram. We also demonstrate remote control of the temporal shaping effect by spectral filtering of the idler photon.

Physical Review A•Jan 25, 2008•36 citations

Dispersive Broadening of Two-photon Wave Packets Generated via Type-I and Type-II Spontaneous Parametric Down-conversion

Kang-Hee Hong, So-Young Baek, Osung Kwon +1 more

Photons generated via spontaneous parametric down-conversion (SPDC) have broad spectrums and suffer from dispersive broadening of the temporal wave packets when they are transmitted through dispersive media. In this paper we theoretically and experimentally study the detailed amount of the temporal broadening of the two-photon wave packets generated via both type-I and type-II SPDC with β -BaB 2 O 4 of various lengths, by transmitting them through optical fibers. We interpret the results with respect to the spectral properties of the two-photon wave packets. We believe that our results will contribute to implementing protocols involving long-range distributions of photon pairs.

Journal of the Korean Physical Society•Dec 1, 2018•4 citations

Inherent resolution limit on nonlocal wavelength-to-time mapping with entangled photon pairs

Ye Yang, Xiao Xiang, Feiyan Hou +8 more

Nonlocal wavelength-to-time mapping between frequency-entangled photon pairs generated with the process of spontaneous parametric down-conversion is theoretically analyzed and experimentally demonstrated. The spectral filtering pattern experienced by one photon in the photon pair will be non-locally mapped into the time domain when the other photon propagates inside a dispersion-compensation fiber with large group velocity dispersion. Our work, for the first time, points out that the spectral bandwidth of the pump laser will become the dominated factor preventing the improvement of the spectral resolution when the involved group velocity dispersion is large enough, which provides an excellent tool for characterizing the resolution of a nonlocal wavelength-to-time mapping for further quantum information applications.

Optics Express•Feb 17, 2020•19 citations

Control of photon correlations in type II parametric down-conversion

Roger Andrews, Andrea T. Joseph, Edward R. Pike +1 more

In this paper we describe theoretically quantum control of temporal correlations of entangled photons produced by collinear type II spontaneous parametric down-conversion. We examine the effect of spectral phase modulation of the signal or idler photons arriving at a 50/50 beam splitter on the temporal shape of the entangled-photon wave packet . The coincidence count rate is calculated analytically for photon pairs in terms of the modulation depth applied to either the signal or idler beam with a spectral phase filter. It is found that the two-photon coincidence rate can be controlled by varying the modulation depth of the spectral filter.

arXiv:quant-ph/0509198•Journal of Optics B Quantum and Semiclassical Optics•Nov 4, 2005•5 citations
We report temporal spreading of a localized single-photon wave packet, conditionally prepared by detecting the trigger photon of the photon pair born in the process of spontaneous parametric down-conversion, propagating through a single-mode optical fiber. The wave packet broadening is shown to be controllable by spectrally filtering the trigger photon.
We experimentally demonstrate temporal shaping of a heralded single-photon wave packet, prepared by conditional measurement of the idler photon of the entangled photon pair in the process of spontaneous parametric down-conversion. The heralded single-photon wave packet for the signal photon, after being tailored with the help of chirp broadening and interference effects, was observed directly by measuring the time-correlated single-photon-counting histogram. We also demonstrate remote control of the temporal shaping effect by spectral filtering of the idler photon.
Photons generated via spontaneous parametric down-conversion (SPDC) have broad spectrums and suffer from dispersive broadening of the temporal wave packets when they are transmitted through dispersive media. In this paper we theoretically and experimentally study the detailed amount of the temporal broadening of the two-photon wave packets generated via both type-I and type-II SPDC with β -BaB 2 O 4 of various lengths, by transmitting them through optical fibers. We interpret the results with respect to the spectral properties of the two-photon wave packets. We believe that our results will contribute to implementing protocols involving long-range distributions of photon pairs.
Nonlocal wavelength-to-time mapping between frequency-entangled photon pairs generated with the process of spontaneous parametric down-conversion is theoretically analyzed and experimentally demonstrated. The spectral filtering pattern experienced by one photon in the photon pair will be non-locally mapped into the time domain when the other photon propagates inside a dispersion-compensation fiber with large group velocity dispersion. Our work, for the first time, points out that the spectral bandwidth of the pump laser will become the dominated factor preventing the improvement of the spectral resolution when the involved group velocity dispersion is large enough, which provides an excellent tool for characterizing the resolution of a nonlocal wavelength-to-time mapping for further quantum information applications.
In this paper we describe theoretically quantum control of temporal correlations of entangled photons produced by collinear type II spontaneous parametric down-conversion. We examine the effect of spectral phase modulation of the signal or idler photons arriving at a 50/50 beam splitter on the temporal shape of the entangled-photon wave packet . The coincidence count rate is calculated analytically for photon pairs in terms of the modulation depth applied to either the signal or idler beam with a spectral phase filter. It is found that the two-photon coincidence rate can be controlled by varying the modulation depth of the spectral filter.