Transfer of a quantum state from a photonic qubit to a gate-defined quantum dot

Interconnecting well-functioning, scalable stationary qubits and photonic qubits could substantially advance quantum communication applications and serve to link future quantum processors. Here, we present two protocols for transferring the state of a photonic qubit to a single-spin and to a two-spi...

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Bibliographic Details
Published in:Physical review. B 2019-05, Vol.99 (20), p.205415, Article 205415
Main Authors: Joecker, Benjamin, Cerfontaine, Pascal, Haupt, Federica, Schreiber, Lars R., Kardynał, Beata E., Bluhm, Hendrik
Format: Article
Language:English
Subjects:
Excitons
Hybrid systems
Photonics
Quantum dots
Qubits (quantum computing)
System effectiveness
Viability
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Summary:Interconnecting well-functioning, scalable stationary qubits and photonic qubits could substantially advance quantum communication applications and serve to link future quantum processors. Here, we present two protocols for transferring the state of a photonic qubit to a single-spin and to a two-spin qubit hosted in gate-defined quantum dots (GDQD). Both protocols are based on using a localized exciton as intermediary between the photonic and the spin qubit. We use effective Hamiltonian models to describe the hybrid systems formed by the exciton and the GDQDs and apply simple but realistic noise models to analyze the viability of the proposed protocols. Using realistic parameters, we find that the protocols can be completed with a success probability ranging between 84–96%.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.99.205415