Near-perfect measuring of full-field transverse-spatial modes of light
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Near-perfect measuring of full-field transverse-spatial modes of light. / Hiekkamäki, Markus; Prabhakar, Shashi; Fickler, Robert.
In: Optics Express, Vol. 27, No. 22, 28.10.2019, p. 31456-31464.Research output: Contribution to journal › Article › Scientific › peer-review
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TY - JOUR
T1 - Near-perfect measuring of full-field transverse-spatial modes of light
AU - Hiekkamäki, Markus
AU - Prabhakar, Shashi
AU - Fickler, Robert
N1 - INT=PHYS,"Hiekkamäki, Markus" INT=PHYS,"Prabhakar, Shashi"
PY - 2019/10/28
Y1 - 2019/10/28
N2 - 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.
AB - 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.
U2 - 10.1364/OE.27.031456
DO - 10.1364/OE.27.031456
M3 - Article
VL - 27
SP - 31456
EP - 31464
JO - Opt. Express
JF - Opt. Express
SN - 1094-4087
IS - 22
ER -