TY - JOUR
T1 - High-Dimensional Two-Photon Interference Effects in Spatial Modes
AU - Hiekkamäki, Markus
AU - Fickler, Robert
N1 - Funding Information:
The authors thank Marcus Huber, Mario Krenn, Shashi Prabhakar, and Lea Kopf for fruitful discussions. M. H. and R. F. acknowledge the support of the Academy of Finland through the Competitive Funding to Strengthen University Research Profiles (decision 301820) and the Photonics Research and Innovation Flagship (PREIN—decision 320165). M. H. also acknowledges support from the Magnus Ehrnrooth foundation through its graduate student scholarship. R. F. also acknowledges support from the Academy of Finland through the Academy Research Fellowship (Decision 332399).
Publisher Copyright:
© 2021 American Physical Society.
PY - 2021
Y1 - 2021
N2 - Two-photon interference is a fundamental quantum optics effect with numerous applications in quantum information science. Here, we study two-photon interference in multiple transverse-spatial modes along a single beam-path. Besides implementing the analog of the Hong-Ou-Mandel interference using a two-dimensional spatial-mode splitter, we extend the scheme to observe coalescence and anticoalescence in different three- A nd four-dimensional spatial-mode multiports. The operation within spatial modes, along a single beam path, lifts the requirement for interferometric stability and opens up new pathways of implementing linear optical networks for complex quantum information tasks.
AB - Two-photon interference is a fundamental quantum optics effect with numerous applications in quantum information science. Here, we study two-photon interference in multiple transverse-spatial modes along a single beam-path. Besides implementing the analog of the Hong-Ou-Mandel interference using a two-dimensional spatial-mode splitter, we extend the scheme to observe coalescence and anticoalescence in different three- A nd four-dimensional spatial-mode multiports. The operation within spatial modes, along a single beam path, lifts the requirement for interferometric stability and opens up new pathways of implementing linear optical networks for complex quantum information tasks.
U2 - 10.1103/PhysRevLett.126.123601
DO - 10.1103/PhysRevLett.126.123601
M3 - Article
C2 - 33834827
AN - SCOPUS:85103443295
SN - 0031-9007
VL - 126
JO - Physical Review Letters
JF - Physical Review Letters
IS - 12
M1 - 123601
ER -