Non-gaussian Entanglement Swapping between Three-Mode Spontaneous Parametric Down Conversion and Three Qubits
arXiv:2111.10096 · doi:10.1103/PhysRevA.105.022401
Abstract
In this work we study the production and swapping of non-gaussian multipartite entanglement in a setup containing a parametric amplifier which generates three photons in different modes coupled to three qubits. We prove that the entanglement generated in this setup is of nongaussian nature. We introduce witnesses of genuine tripartite nongaussian entanglement, valid both for mode and qubit entanglement. Moreover, those witnesses show that the entanglement generated among the photons can be swapped to the qubits, and indeed the qubits display nongaussian genuine tripartite entanglement over a wider parameter regime, suggesting that our setup could be a useful tool to extract entanglement generated in higher-order parametric amplification for quantum metrology or quantum computing applications.
12 pages, 3 figures. v2:published version, minor changes
References in corpus (7)
- Experimental quantum teleportation
- Quantum computational advantage using photons
- Fisher Information and entanglement of non-Gaussian spin states
- Time-reversal symmetry breaking in circuit-QED based photon lattices
- Inductive Entanglement Classification of Four Qubits under SLOCC
- Inductive classification of multipartite entanglement under SLOCC
- An Algebraic-Geometric Characterization of Tripartite Entanglement