Optical Charge Injection and Full Coherent Control of Spin-Qubit in the Telecom C-band Emitting Quantum Dot

Abstract

Solid-state quantum emitters with manipulable spin-qubits are promising platforms for quantum communication applications. Although such light-matter interfaces could be realized in many systems only a few allow for light emission in the telecom bands necessary for long-distance quantum networks. Here, we propose and implement a new optically active solid-state spin-qubit based on a hole confined in a single InAs/GaAs quantum dot grown on an InGaAs metamorphic buffer layer emitting photons in the C-band. We lift the hole spin-degeneracy using an external magnetic field and demonstrate hole injection, initialization, read-out and complete coherent control using picosecond optical pulses. These results showcase a new solid-state spin-qubit platform compatible with preexisting optical fibre networks.

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Cited by in corpus (13)

• Spin-photon entanglement with direct photon emission in the telecom C-band
• Strain-free GaSb quantum dots as single-photon sources in the telecom S-band
• Impact of MBE-grown (In,Ga)As/GaAs metamorphic buffers on excitonic and optical properties of single quantum dots with single-photon emission tuned to the telecom range
• Universal Control of Symmetric States Using Spin Squeezing
• Multiple Rabi rotations of trions in InGaAs quantum dots observed by photon echo spectroscopy with spatially shaped laser pulses
• Single site-controlled inverted pyramidal InGaAs QD-nanocavity operating at the onset of the strong coupling regime
• Kondo enhancement of current induced spin accumulation in a quantum dot
• Initialization of Neutral and Charged Exciton Spin States in a Telecom-Emitting Quantum Dot
• Single quantum dot selection and tailor-made photonic device integration using nanoscale focus pinspot
• Hole spin coherence in InAs/InAlGaAs self-assembled quantum dots emitting at telecom wavelengths
• Mid-Infrared Optical Spin Injection and Coherent Control
• Probing electron spin dynamics in single telecom InAs(P)/InP quantum dots using the Hanle effect
• Spin-photon Qubits for Scalable Quantum Network