Measuring the frequency-time two-photon wavefunction of narrowband entangled photons from cold atoms via stimulated emission
Posted on 2017-10-12 - 18:27
Cold atom based narrowband entangled photon sources are important for efficient atom-photon inter- action, which is at the heart of long-distance quantum communication and quantum memory protocols. Complete characterization of the narrowband entangled photons requires acquiring the frequency-time two-photon wavefunction, involving both joint temporal intensity (JTI) and joint temporal phase (JTP) measurements. Here, we demonstrate stimulated emission tomography of the frequency-time two-photon wavefunction of narrowband entangled photons from cold atoms. We show over six orders of magnitude (×10^6) improvement in the measurement time for obtaining JTI and JTP compared to the conventional di- rect photon counting method, thus paving the way toward ultrafast high-resolution quantum tomography of photonic quantum states.
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Park, Kwang-Kyoon; Kim, Jin-Hun; Zhao, Tian-Ming; Cho, Young-Wook; Kim, Yoon-Ho (2017). Measuring the frequency-time two-photon wavefunction of narrowband entangled photons from cold atoms via stimulated emission. Optica Publishing Group. Collection. https://doi.org/10.6084/m9.figshare.c.3877237.v1
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AUTHORS (5)
KP
Kwang-Kyoon Park
JK
Jin-Hun Kim
TZ
Tian-Ming Zhao
YC
Young-Wook Cho
YK
Yoon-Ho Kim