https://doi.org/10.1140/epjd/e2003-00287-1
Experimental multi-photon-resolving detector using a single avalanche photodiode
1
Joint Laboratory of
Optics, Palacký University and Institute of Physics of
Academy of Sciences of the Czech Republic, 17. listopadu 50,
772 07 Olomouc, Czech Republic
2
Department of Optics,
Palacký University, 17. listopadu 50, 772 07 Olomouc,
Czech Republic
Corresponding author: a haderka@sloup.upol.cz
Received:
10
March
2003
Revised:
16
July
2003
Published online:
14
October
2003
A multichannel detector has been constructed using a single avalanche photodiode and a fiber-loop delay line. Detection probabilities of the channels can be set using a variable-ratio coupler. The performance of the detector is demonstrated on its capability to distinguish multi-photon states (containing two or more photons) from the one-photon state and the vacuum state.
PACS: 42.50.Dv – Nonclassical states of the electromagnetic field, including entangled photon states; quantum state engineering and measurements / 03.67.Hk – Quantum communication
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2004
