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

Quantum science and technology

Two-Photon Interference

David S. Simon, Gregg S. Jaeger, Alexander V. Sergienko

Published Nov 3, 2016• 1 citation
Publisher
DOI
10.1007/978-3-319-46551-7_2

Related papers

One- and Two-Photon Interference

Paul G. Kwiat

Compendium of Quantum Physics•Jan 1, 2009•1 citation

Quantum theory of two-photon wavepacket interference in a beamsplitter

Kaige Wang

A general theory is derived for the interference of a two-photon wavepacket in a beamsplitter. The theory is presented in the Schrödinger picture so that the quantum nature of the two-photon interference is explicitly revealed. We find that the topological symmetry of the probability-amplitude spectrum of the two-photon wavepacket dominates the nature of the two-photon interference, which may be distinguished by the increase or decrease of the coincidence probability in the absence of interference. However, two-photon entanglement can be identified by the nature of the interference. We demonstrate the necessary and sufficient conditions for perfect two-photon interference. It is shown that a two-photon entangled state with an anti-symmetric spectrum passes through a 50/50 beamsplitter with perfect transparency. The theory provides us with a unified understanding of the various two-photon interference effects.

arXiv:quant-ph/0311011•Journal of Physics B Atomic Molecular and Optical Physics•Sep 5, 2006•54 citations

Why Two-Photon but Not Two Photons?

Yanhua H. Shih, Dmitry Strekalov, T. D. Pittman +1 more

In his famous book, The Principles of Quantum Mechanics, Dirac stated that “... photon ... interferes only with itself. Interference between two different photons never occurs.” However, two-photon interference has been demonstrated experimentally. Was Dirac wrong? We report an new experiment in this paper. It demonstrated that two-photon interference can not be considered the interference of two photons. “Two-photon” is not two photons. Two-photon is a single entity, which is just like a photon. We may call it biphoton. Dirac was correct. Biphoton interferes only with itself.

Fortschritte der Physik•Nov 1, 1998•4 citations

Phase-Independent Two-Photon Interference

Z. Y. Ou

Springer eBooks•Jan 1, 2007•0 citations

Two-photon interference imaging

Deyang Duan, Yunjie Xia

In this article, we propose the two-photon interference imaging based on two-photon interference mechanism with thermal light source. Theoretical and experimental results show that the imaging quality and imaging speed of two-photon interference imaging are comparable to that of classical optical imaging, and much better than that of conventional quantum imaging (ghost imaging). Furthermore, Two-photon interference imaging can effectively overcome the effect of atmospheric turbulence and other harsh optical environments. The physical essence is the inhibition of two-photon interference mechanism on atmospheric turbulence.

arXiv:2004.11257•Apr 22, 2020•0 citations

Single-Photon Interference

P. Hariharan

Elsevier eBooks•Jan 1, 2003•0 citations
A general theory is derived for the interference of a two-photon wavepacket in a beamsplitter. The theory is presented in the Schrödinger picture so that the quantum nature of the two-photon interference is explicitly revealed. We find that the topological symmetry of the probability-amplitude spectrum of the two-photon wavepacket dominates the nature of the two-photon interference, which may be distinguished by the increase or decrease of the coincidence probability in the absence of interference. However, two-photon entanglement can be identified by the nature of the interference. We demonstrate the necessary and sufficient conditions for perfect two-photon interference. It is shown that a two-photon entangled state with an anti-symmetric spectrum passes through a 50/50 beamsplitter with perfect transparency. The theory provides us with a unified understanding of the various two-photon interference effects.
In his famous book, The Principles of Quantum Mechanics, Dirac stated that “... photon ... interferes only with itself. Interference between two different photons never occurs.” However, two-photon interference has been demonstrated experimentally. Was Dirac wrong? We report an new experiment in this paper. It demonstrated that two-photon interference can not be considered the interference of two photons. “Two-photon” is not two photons. Two-photon is a single entity, which is just like a photon. We may call it biphoton. Dirac was correct. Biphoton interferes only with itself.
In this article, we propose the two-photon interference imaging based on two-photon interference mechanism with thermal light source. Theoretical and experimental results show that the imaging quality and imaging speed of two-photon interference imaging are comparable to that of classical optical imaging, and much better than that of conventional quantum imaging (ghost imaging). Furthermore, Two-photon interference imaging can effectively overcome the effect of atmospheric turbulence and other harsh optical environments. The physical essence is the inhibition of two-photon interference mechanism on atmospheric turbulence.