Complete Coherent Control of a Quantum Dot Strongly Coupled to a Nanocavity
Abstract
Strongly coupled quantum dot-cavity systems provide a non-linear configuration of hybridized light-matter states with promising quantum-optical applications. Here, we investigate the coherent interaction between strong laser pulses and quantum dot-cavity polaritons. Resonant excitation of polaritonic states and their interaction with phonons allow us to observe coherent Rabi oscillations and Ramsey fringes. Furthermore, we demonstrate complete coherent control of a quantum dot-photonic crystal cavity based quantum-bit. By controlling the excitation power and phase in a two-pulse excitation scheme we achieve access to the full Bloch sphere. Quantum-optical simulations are in good agreement with our experiments and provide insight into the decoherence mechanisms.
- Publication:
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Scientific Reports
- Pub Date:
- April 2016
- DOI:
- 10.1038/srep25172
- arXiv:
- arXiv:1512.05952
- Bibcode:
- 2016NatSR...625172D
- Keywords:
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- Condensed Matter - Mesoscale and Nanoscale Physics;
- Physics - Optics;
- Quantum Physics
- E-Print:
- Scientific Reports 6, 25172 (2016)