TY - JOUR
T1 - Witnessing entangled two-photon absorption via quantum interferometry
AU - Martínez-Tapia, Áulide
AU - Corona-Aquino, Samuel
AU - Triana-Arango, Freiman
AU - You, Chenglong
AU - Jin, Rui Bo
AU - Magaña-Loaiza, Omar S.
AU - Dong, Shi Hai
AU - U'Ren, Alfred B.
AU - León-Montiel, Roberto De J.
N1 - Publisher Copyright:
© 2023 Author(s).
PY - 2023/3/1
Y1 - 2023/3/1
N2 - Recent investigations have suggested that the use of non-classical states of light, such as entangled photon pairs, may open new and exciting avenues in experimental two-photon absorption spectroscopy. Despite several experimental studies of entangled two-photon absorption (eTPA), there is still a heated debate on whether eTPA has truly been observed. This interesting debate has arisen mainly because it has recently been argued that single-photon-loss mechanisms, such as scattering or hot-band absorption, may mimic the expected entangled-photon linear absorption behavior. In this work, we focus on transmission measurements of eTPA and explore three different two-photon quantum interferometers in the context of assessing eTPA. We demonstrate that the so-called N00N-state configuration is the only one among those considered insensitive to linear (single-photon) losses. Remarkably, our results show that N00N states may become a potentially powerful tool for quantum spectroscopy, placing them as a strong candidate for the certification of eTPA in an arbitrary sample.
AB - Recent investigations have suggested that the use of non-classical states of light, such as entangled photon pairs, may open new and exciting avenues in experimental two-photon absorption spectroscopy. Despite several experimental studies of entangled two-photon absorption (eTPA), there is still a heated debate on whether eTPA has truly been observed. This interesting debate has arisen mainly because it has recently been argued that single-photon-loss mechanisms, such as scattering or hot-band absorption, may mimic the expected entangled-photon linear absorption behavior. In this work, we focus on transmission measurements of eTPA and explore three different two-photon quantum interferometers in the context of assessing eTPA. We demonstrate that the so-called N00N-state configuration is the only one among those considered insensitive to linear (single-photon) losses. Remarkably, our results show that N00N states may become a potentially powerful tool for quantum spectroscopy, placing them as a strong candidate for the certification of eTPA in an arbitrary sample.
UR - http://www.scopus.com/inward/record.url?scp=85149899300&partnerID=8YFLogxK
U2 - 10.1063/5.0128249
DO - 10.1063/5.0128249
M3 - Artículo
AN - SCOPUS:85149899300
SN - 2378-0967
VL - 8
JO - APL Photonics
JF - APL Photonics
IS - 3
M1 - 036104
ER -