Generation, manipulation, and detection of two-qubit entanglement in waveguide QED

Abstract

We study the possibility of using guided photons to generate, control, and measure the entanglement of two qubits that is mediated by a one-dimensional waveguide. We show how entanglement can be generated both with single photon and with two-photon wavepackets. The introduction of a second photon allows for a manipulation of the entanglement between the qubits, and phenomena such as sudden death and revival of entanglement appear. Finally, we propose a procedure for entanglement detection via the scattering output of a single-photon over a qubit state.

10 pages, 6 figures

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• Multiple Fano interferences due to waveguide-mediated phase-coupling between atoms
• Single photon scattering from a chain of giant atoms coupled to a one-dimensional waveguide
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• One- and Two-Photon Scattering by Two Atoms in a Waveguide
• Strongly entangled system-reservoir dynamics with multiphoton pulses beyond the two-excitation limit: Exciting the atom-photon bound state
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• Manipulation of Multipartite Entanglement in an Array of Quantum Dots
• Remote magnon-phonon entanglement in the waveguide-magnomechanics