Both laser-cooled atomic ions and neutral atoms in electromagnetic traps provide pristine quantum systems that can be engineered from the ground up to an unprecedented level of control. Atoms interacting with lasers offer unmatched coherence properties, deterministic entanglement generation and nearly perfect detection of individual quantum systems. In our lab we will use trapped ions and neutral atoms to assemble atom-by-atom quantum systems whose parameters can be tailored microscopically to investigate unexplored quantum many-body phenomena and tackle new ways of processing quantum information.
Trapped-Ion Quantum Simulator
Laser cooled trapped ions self-organize in Coulomb crystals with well-defined collective motional modes, which are used as quantum buses to process quantum information. In an analog quantum simulator this gives rise to effective spin Hamiltonians where the spin degree of freedom is encoded in two atomic internal states. We aim to employ these systems to study spin Hamiltonians with long-range interactions in a regime where classical computers struggle to give exact predictions. Using individual addressing of pristine trapped-ion qubits allows to tailor both unitary and dissipative evolutions of many-body systems and opens up new exciting directions, including the realization of quantum spin glass models, the simulation of engineered open-quantum systems, the experimental realization of high energy physics models and many more…
Neutral Atoms in Optical Tweezers Arrays
Neutral atoms in optical tweezers can be detected and manipulated at the individual level by controlling the position and the intensity of the laser beams, allowing the realization of defect-free arrays in one-dimensional, two-dimensional and three-dimensional configurations. We aim to use two-electron atoms because of the simultaneous presence of nuclear and electronic degrees of freedom with exceptional coherence properties, which make these atomic species strong candidates for realizing scalable quantum computing architectures. Programmable tweezers arrays and two-electron atoms allow to combine high resolution in both the spatial and spectral domain opening new avenues for quantum information processing, ranging from Rydberg blockade to optically gated collisional interactions.