Spin quantum computing

The possibility to access the quantum nature of matter at the mesoscopic level has opened a new era in condensed matter physics. Its success is based on the low dimensionality reached for the charge carriers, i.e., on the strong confinement of spatial dimensions to length scales comparable to the particle’s wavelength.

Quantum dots (QDs) are nanostructures hosted in semiconductors where a few electrons can be electrostatically trapped in discrete states. Therefore, QDs allow us to access and control the quantum nature of single electrons and interactions between them. Since the first measurements of few-electron phenomena in lateral gated QDs, the focus of applications of these systems has shifted from single spintronics toward quantum information science, as originally envisioned by Loss and DiVincenzo.

My main research interests in this field are the coupling between distant spin qubits and the control over negative influences of the environment with the goal of a scalable design of useful quantum devices based on this promising qubit platform.

Related Publications

Optimized cavity-mediated dispersive two-qubit gates between spin qubits

Optimized cavity-mediated dispersive two-qubit gates between spin qubits

Performance of single-electron spin qubits in DQDs with respect to dispersive long-distance two-qubit gates mediated by virtual cavity photons.
A coherent spin–photon interface in silicon

A coherent spin–photon interface in silicon

First demonstration of strong coupling between a single spin in silicon and a single microwave-frequency photon.
Input-output theory for spin-photon coupling in Si double quantum dots

Input-output theory for spin-photon coupling in Si double quantum dots

The recent advances in Si DQDs fabrication and control, a spin-photon coupling of more than 10 MHz with a sufficiently low spin decoherence rate is achievable, potentially allowing the strong-coupling regime and paving the way towards a spin-based quantum processor with full connectivity.
Dissipative Long-Range Entanglement Generation between Electronic Spins

Dissipative Long-Range Entanglement Generation between Electronic Spins

Proposal for deterministic generation and long-term stabilization of entanglement between two electronic spin qubits confined in spatially separated quantum dots.