376 citations · 1.1k across the 13 of their papers we have counts for
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Robust electric dipole transition at microwave frequencies for nuclear spin qubits in silicon
Guilherme Tosi, Fahd A. Mohiyaddin, Stefanie Tenberg +2
The nuclear spin state of a phosphorus donor (P) in isotopically enriched silicon-28 is an excellent host to store quantum information in the solid state. The spin's insensi…
Breaking the rotating wave approximation for a strongly-driven, dressed, single electron spin
Arne Laucht, Stephanie Simmons, Rachpon Kalra +10
We investigate the dynamics of a strongly-driven, microwave-dressed, donor-bound electron spin qubit in silicon. A resonant oscillating magnetic field is used to dress the el…
Silicon quantum processor with robust long-distance qubit couplings
Guilherme Tosi, Fahd A. Mohiyaddin, Vivien Schmitt +4
Practical quantum computers require the construction of a large network of highly coherent qubits, interconnected in a design robust against errors. Donor spins in silicon provide…
Ignition and formation dynamics of a polariton condensate on a semiconductor microcavity pillar
C. Antón, D. Solnyshkov, G. Tosi +6
We present an experimental study on the ignition and decay of a polariton optical parametric oscillator (OPO) in a semiconductor microcavity pillar. The combination of a continuous…
Circuit-quantum electrodynamics with direct magnetic coupling to single-atom spin qubits in isotopically enriched 28Si
Guilherme Tosi, Fahd A. Mohiyaddin, Hans Huebl +1
Recent advances in silicon nanofabrication have allowed the manipulation of spin qubits that are extremely isolated from noise sources, being therefore the semiconductor equivalent…
Quantum coherence in momentum space of light-matter condensates
C. Antón, G. Tosi, M. D. Martín +6
We show that the use of momentum-space optical interferometry, which avoids any spatial overlap between two parts of a macroscopic quantum state, presents a unique way to study coh…
Vortex stability and permanent flow in nonequilibrium polariton condensates
G. Tosi, D. Sanvitto, M. Baudisch +6
We study the effects of imprinting a single-quantized vortex on the steady state of a microcavity exciton-polariton condensate generated via parametric scattering. Interestingly we…
Energy relaxation of exciton-polariton condensates in quasi-1D microcavities
C. Antón, T. C . H. Liew, G. Tosi +6
We present a time-resolved study of energy relaxation and trapping dynamics of polariton condensates in a semiconductor microcavity ridge. The combination of two non-resonant, puls…
Dynamics of a polariton condensate transistor switch
C. Anton, T. C. H. Liew, G. Tosi +6
We present a time-resolved study of the logical operation of a polariton condensate transistor switch. Creating a polariton condensate (source) in a GaAs ridge-shaped microcavity w…
Role of supercurrents on vortices formation in polariton condensates
C. Anton, G. Tosi, M. D. Martin +3
Observation of quantized vortices in non-equilibrium polariton condensates has been reported either by spontaneous formation and pinning in the presence of disorder or by imprintin…
Polariton ring condensates and sunflower ripples in an expanding quantum liquid
Gabriel Christmann, Guilherme Tosi, Natalia G. Berloff +5
Optically pumping high quality semiconductor microcavities allows for the spontaneous formation of polariton condensates, which can propagate over distances of many microns. Tightl…
Sculpting oscillators with light within a nonlinear quantum fluid
G. Tosi, G. Christmann, N. G. Berloff +5
Seeing macroscopic quantum states directly remains an elusive goal. Particles with boson symmetry can condense into such quantum fluids producing rich physical phenomena as well as…
Onset and dynamics of vortex-antivortex pairs in polariton OPO superfluids
G. Tosi, F. M. Marchetti, D. Sanvitto +8
We study, both theoretically and experimentally, the occurrence of topological defects in polariton superfluids in the optical parametric oscillator (OPO) regime. We explain in ter…