Academia

The Quantum Länd

We are working on the realiza­tion of fully functional quantum compu­ters and simula­tors based on indivi­du­ally control­led stron­tium atoms. Our group opera­tes two quantum compu­ters, QRydDemo and CiRQus, on which we explore new concepts for compu­ta­tion with optically trapped atoms in Rydberg states. This includes inves­ti­ga­ti­ons into fine struc­ture qubits and circu­lar Rydberg qubits, as well as novel archi­tec­tures for dynamic atomic arran­ge­ments. In addition, we are develo­ping a complete software stack that enables exter­nal users to access the systems via a web interface.

Research

  • QRydDemo quantum compu­ter demons­tra­tor combi­nes the fine struc­ture qubit with a novel qubit array archi­tec­ture, enabling the realiza­tion of more than 500 dynami­cally connec­ted qubits.
  • CiRQus quantum simula­tor explo­res a novel Rydberg qubit encoded in long lived circu­lar states. The goal is to overcome funda­men­tal limita­ti­ons in gate fideli­ties and coherence times in the neutral atom platform, which are so far deter­mi­ned by the lifetime of the Rydberg state.

Contact

Prof. Dr. Hans Peter Büchler

Project manage­ment and coordination

Stutt­gart

Activities

Illus­tra­tion of our neutral atom qubit array showing an atom pair excited into Rydberg states to imple­ment a two qubit gate.

Illus­tra­tion of the CiRQus machine used to study long lived circu­lar Rydberg atoms for quantum simulations.

The Quantum Länd software stack was develo­ped to provide users with access to our machi­nes. It already enables the execu­tion of algorithms on our quantum compu­ter emula­tor through a user friendly drag and drop inter­face for desig­ning quantum circuits.

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Are you working on quantum technologies in Baden-Württemberg and would like to learn more about the QuantumBW initiative? Would you like to become part of the QuantumBW initiative and sign a Letter of Intent? Get in touch with us.

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