Hyper-entanglement between pulse modes and frequency bins
- URL: http://arxiv.org/abs/2304.12195v1
- Date: Mon, 24 Apr 2023 15:43:08 GMT
- Title: Hyper-entanglement between pulse modes and frequency bins
- Authors: Fabrizio Chiriano, Joseph Ho, Christopher L. Morrison, Jonathan W.
Webb, Alexander Pickston, Francesco Graffitti and Alessandro Fedrizzi
- Abstract summary: Hyper-entanglement between two or more photonic degrees of freedom (DOF) can enhance and enable new quantum protocols.
We demonstrate the generation of photon pairs hyper-entangled between pulse modes and frequency bins.
- Score: 101.18253437732933
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Hyper-entanglement between two or more photonic degrees of freedom (DOF) can
enhance and enable new quantum protocols by allowing each DOF to perform the
task it is optimally suited for. Here we demonstrate the generation of photon
pairs hyper-entangled between pulse modes and frequency bins. The pulse modes
are generated via parametric downconversion in a domain-engineered crystal and
subsequently entangled to two frequency bins via a spectral mapping technique.
The resulting hyper-entangled state is characterized and verified via
measurement of its joint spectral intensity and non-classical two-photon
interference patterns from which we infer its spectral phase. The protocol
combines the robustness to loss, intrinsic high dimensionality and
compatibility with standard fiber-optic networks of the energy-time DOF with
the ability of hyper-entanglement to increase the capacity and efficiency of
the quantum channel, already exploited in recent experimental applications in
both quantum information and quantum computation.
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