Generation of an arbitrary four-photon polarization-entangled decoherence-free state with cross-Kerr nonlinearity
Sign Up to like & getrecommendations! Published in 2017 at "Quantum Information Processing"
DOI: 10.1007/s11128-017-1646-3
Abstract: We present a new scheme to provide an arbitrary four-photon polarization-entangled state, which enables the encoding of single logical qubit information into a four-qubit decoherence-free subspace robustly against collective decoherence. With the assistance of the… read more here.
Keywords: four photon; polarization; photon polarization; arbitrary four ... See more keywords
Broadband pumped polarization entangled photon-pair source in a linear beam displacement interferometer
Sign Up to like & getrecommendations! Published in 2020 at "Applied Physics Letters"
DOI: 10.1063/1.5124416
Abstract: We experimentally demonstrate a source of polarization entangled photon-pairs based on a single periodically poled potassium titanyl phosphate crystal pumped with a broadband, free running laser diode. The crystal is placed within a linear beam-displacement… read more here.
Keywords: photon; entangled photon; linear beam; polarization entangled ... See more keywords
Compact polarization-entangled photon source based on coexisting noncritically birefringent and quasi phase matching in a nonlinear crystal.
Sign Up to like & getrecommendations! Published in 2024 at "Optics express"
DOI: 10.1364/oe.527688
Abstract: Polarization-entangled photons are indispensable to numerous quantum technologies and fundamental studies. In this paper, we propose and demonstrate what we believe to be a novel source that generates collinear polarization-entangled photons by simultaneously achieving two… read more here.
Keywords: phase matching; source; polarization; birefringent quasi ... See more keywords
Entanglement swapping with autonomous polarization-entangled photon pairs from a warm atomic ensemble.
Sign Up to like & getrecommendations! Published in 2020 at "Optics letters"
DOI: 10.1364/ol.388613
Abstract: Entanglement swapping forms a key concept in the realization of scalable quantum networks and large-scale quantum communication. For the practical implementation of entanglement swapping, completely autonomous entanglement sources and a joint Bell-state measurement (BSM) between… read more here.
Keywords: entangled photon; entanglement swapping; atomic ensemble; entanglement ... See more keywords
Polarization-entangled photon pairs from lithium niobate metasurfaces.
Sign Up to like & getrecommendations! Published in 2025 at "Optics letters"
DOI: 10.1364/ol.559126
Abstract: Flat optics has emerged as a promising platform for ultrathin polarization-entangled sources via spontaneous parametric downconversion in subwavelength-thick nonlinear films or metasurfaces. However, previous schemes typically required multiplexing two films or two meta-structures with different… read more here.
Keywords: lithium niobate; photon; photon pairs; entangled photon ... See more keywords
Polarization-entangled photon pairs with factorable spectra engineered by using an uneven four-stage nonlinear interferometer
Sign Up to like & getrecommendations! Published in 2024 at "Chinese Optics Letters"
DOI: 10.3788/col202422.052701
Abstract: We report the generation of polarization-entangled photon pairs in the 1550 nm band by pumping an uneven nonlinear interferometer loop with two orthogonally polarized counterpropagating pump pulses. The uneven nonlinear interferometer, providing a more ideal… read more here.
Keywords: photon; photon pairs; entangled photon; nonlinear interferometer ... See more keywords