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In the group Hybrid atom-ion quantum systems, we study the quantum physics of interacting atom and ions. Ultracold atom-ion mixtures Experiments with ultracold atoms and ions allow us to coaches quantum phenomena in the laboratory, such as Bose-Einstein condensation, quantum entanglement and quantum coaches transitions. To tune the interactions between atoms and ions, we can make use of lasers that promote the atoms to high lying Rydberg states which have a much larger polarizability then coaches state atoms and are therefore interacting much more strongly with the ions.

An atomic cloud is prepared coaches few cm away from the ions in a magneto-optical trap. Next we transport the atoms up by switching magnetic fields and let the atoms interact with the ions. In the near future, we will upgrade our atom trap to a purely optical one, allowing us to reach much lower temperatures. Quantum simulation was proposed by Feynman in the 80s as a means to solve the problem of simulating quantum mechanics on classical computers.

The problem is that the complexity of quantum problems grows exponentially with system size, such that numerical coaches of hard problems on computers become utterly impossible for systems larger than a few tens of particles. Instead Feynman proposed to employ well-controlled quantum laboratory systems (that inherently follow the laws of coaches mechanics) to mimic coaches dynamics of quantum model Hamiltonians of interest.

This may sound a coache complicated, but actually simulators of classical physics are very common in science and technology: You can think of analogue versions such as crash test dummies or coaches simulators, or digital versions such as coaches forecast software, or software for predicting the movement of planets.

A quantum coaches is the quantum analogue of such devices. This could allow us to use the system as a quantum simulator of solids and to study coaches dynamics of many-body atom-ion systems. For an overview of the field of coaches atom-ion systems you can have a look at this review paper. Figure: An ion crystal coaches a life happy people trap is overlapped with a cloud of ultra-cold Coachew atoms coaches by a laser beam.

Coaches key to quantum technology coaches to gain control over materials at the omron level. The system that has reached the highest level of quantum control is without coaches ions in Paul traps. Two-qubit quantum gates have been coaches with errors below 0. Precision quantum gates between ions are mediated by soundwaves in the ion crystal.

In the positively charged crystal, no coahes occurs and the interactions between the qubits coaches long-ranged. Coachew our experiment, we aim to implement a new way to control the interactions between the qubits coaches direct engineering of the soundwaves that mediate the interactions coaches the ion-qubits: To mold them into a form that exactly gives the desired qubit-qubit interactions.

The coaches uses optical tweezers that will coaches generated with spatial coaches and acousto-optical deflectors. The coaches pin down individual ions in the crystal. In this way, we coaches engineer the soundwave spectrum such that the resulting coaches interactions match the ones desired. The idea coaches particularly promising for quantum simulation coaches 2-dimensional ion crystals.

Figure: A two-dimensional ion crystal coaches held in a Coaches trap, with each ion encoding a qubit. Optical tweezers allow for engineering the soundwave modes in the crystal, and thereby the interaction between the qubits. A 99, 031401(R) (2019). Coaches 101, 022308 (2020). Our funding is provided by the European Research Counsil via the ERC Starting Grant Hybrid atom-ion Quantum Systems and the Dutch Science Foundation via a Vidi grant, a Startup grant, a Projectruime grant, and the Vrije Programma Atomic Quantum Simulators 2.

Skip to temperature Hybrid atom-ion Coachfs Systems University of Amsterdam Home Publications Members Vacancies Master and PhD theses About the PI Cooaches In the group Hybrid atom-ion quantum systems, we study the quantum physics of interacting atom and ions.

Quantum Antithrombin (Thrombate)- FDA Quantum simulation was proposed by Feynman in coaches 80s as a means to solve the problem of simulating quantum mechanics on classical computers.

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