Quantum modulation of a coherent state wavepacket with a single electron spin

• URL: http://arxiv.org/abs/2207.05596v1
• Date: Tue, 12 Jul 2022 15:13:33 GMT
• Title: Quantum modulation of a coherent state wavepacket with a single electron spin
• Authors: P. Androvitsaneas, A. B. Young, T. Nutz, J.M. Lennon, S. Mister, C. Schneider, M. Kamp, S. H\"ofling, D. P. S. McCutcheon, E. Harbord, J. G. Rarity, and R. Oulton
• Abstract summary: Photon-quantum-emitter interactions are among the most widely studied. Two-qubit interactions are generally simplified into two quantum objects in static well-defined states. We demonstrate modulation of a coherent narrowband wavepacket with another truly quantum object, a quantum dot with ground state spin degree of freedom.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The interaction of quantum objects lies at the heart of fundamental quantum physics and is key to a wide range of quantum information technologies. Photon-quantum-emitter interactions are among the most widely studied. Two-qubit interactions are generally simplified into two quantum objects in static well-defined states . In this work we explore a fundamentally new dynamic type of spin-photon interaction. We demonstrate modulation of a coherent narrowband wavepacket with another truly quantum object, a quantum dot with ground state spin degree of freedom. What results is a quantum modulation of the wavepacket phase (either 0 or {\pi} but no values in between), a new quantum state of light that cannot be described classically.

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