TY - JOUR
T1 - Polarization Entanglement by Time-Reversed Hong-Ou-Mandel Interference
AU - Chen, Yuanyuan
AU - Ecker, Sebastian
AU - Wengerowsky, Sören
AU - Bulla, Lukas
AU - Joshi, Siddarth Koduru
AU - Steinlechner, Fabian
AU - Ursin, Rupert
PY - 2018/11/14
Y1 - 2018/11/14
N2 - Sources of entanglement are an enabling resource in quantum technology, and pushing the limits of generation rate and quality of entanglement is a necessary prerequisite towards practical applications. Here, we present an ultrabright source of polarization-entangled photon pairs based on time-reversed Hong-Ou-Mandel interference. By superimposing four pair-creation possibilities on a polarization beam splitter, pairs of identical photons are separated into two spatial modes without the usual requirement for wavelength distinguishability or noncollinear emission angles. Our source yields high-fidelity polarization entanglement and high pair-generation rates without any requirement for active interferometric stabilization, which makes it an ideal candidate for a variety of applications, in particular those requiring indistinguishable photons.
AB - Sources of entanglement are an enabling resource in quantum technology, and pushing the limits of generation rate and quality of entanglement is a necessary prerequisite towards practical applications. Here, we present an ultrabright source of polarization-entangled photon pairs based on time-reversed Hong-Ou-Mandel interference. By superimposing four pair-creation possibilities on a polarization beam splitter, pairs of identical photons are separated into two spatial modes without the usual requirement for wavelength distinguishability or noncollinear emission angles. Our source yields high-fidelity polarization entanglement and high pair-generation rates without any requirement for active interferometric stabilization, which makes it an ideal candidate for a variety of applications, in particular those requiring indistinguishable photons.
UR - http://www.scopus.com/inward/record.url?scp=85056737612&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.121.200502
DO - 10.1103/PhysRevLett.121.200502
M3 - Article (Academic Journal)
C2 - 30500221
AN - SCOPUS:85056737612
VL - 121
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 20
M1 - 200502
ER -