| AVS 66th International Symposium & Exhibition | |
| Materials and Processes for Quantum Information, Computing and Science Focus Topic | Tuesday Sessions |
| Session QS-TuM |
| Session: | AVS Quantum Science (ALL INVITED SESSION) |
| Presenter: | Pieter Kok, University of Sheffield, UK |
| Authors: | D. Hurst, University of Sheffield, UK K. Joanesarson, University of Sheffield, UK, Tech. University of Denmark J. Iles-Smith, University of Sheffield, UK J. Mork, University of Denmark P. Kok, University of Sheffield, UK |
| Correspondent: | Click to Email |
We show how to create maximal entanglement between two spectrally distinct solid-state emitters embedded in a waveguide Mach-Zehnder interferometer. By tailoring the input to the interferometer, we optimise the concurrence of the emitter qubits states and show that a two-photon input state can generate deterministic maximal entanglement even for emitters with significantly different transition energies and line-widths. The optimal frequency is determined by two competing processes: which-path erasure and interaction strength. Smaller spectral overlap can be overcome with higher photon numbers, and quasi-monochromatic photons are optimal for entanglement generation. Our work reveals a rich underlying structure in multi-photon scattering from two non-identical emitters, and provides a new methodology for solid-state entanglement generation, where the requirement for perfectly matched emitters can be relaxed in favour of optical state optimisation.