Near-perfect measuring of full-field transverse-spatial modes of light
Hiekkamäki, Markus; Prabhakar, Shashi; Fickler, Robert (2019-10-28)
Hiekkamäki, Markus
Prabhakar, Shashi
Fickler, Robert
28.10.2019
This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tuni-202010297704
https://urn.fi/URN:NBN:fi:tuni-202010297704
Kuvaus
Peer reviewed
Tiivistelmä
Along with the growing interest in using the transverse-spatial modes of light in quantum and classical optics applications, developing an accurate and efficient measurement method has gained importance. Here, we present a technique relying on a unitary mode conversion for measuring any full-field transverse-spatial mode. Our method only requires three consecutive phase modulations followed by a single mode fiber and is, in principle, error-free and lossless. We experimentally test the technique using a single spatial light modulator and achieve an average error of 4.2 % for a set of 9 different full-field Laguerre-Gauss and Hermite-Gauss modes with an efficiency of up to 70%. Moreover, as the method can also be used to measure any complex superposition state, we demonstrate its potential for quantum cryptography applications and in high-dimensional quantum state tomography.
Kokoelmat
- TUNICRIS-julkaisut [16944]