Quantum network with singleatoms and cavities: a tool for distributed quantum computing
CIC nanoGUNE Seminars
 Speaker

Emanuele Distante, Max Planck Institute of Quantum Optics, Garching, Germany
 When

2022/07/28
11:00  Place
 nanoGUNE seminar room, Tolosa Hiribidea 76, Donostia  San Sebastian
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**Quantum network with singleatoms and cavities: a tool for distributed quantum computing** Emanuele Distante Max Planck Institute of Quantum Optics, Garching, Germany The development of quantum computers relies on the ability to individually control and mutually couple a large number of qubits. Despite recent progress, scaling up the number of controllable qubits is a major experimental challenge due to residual crosstalks between the qubits, coupling constraints and restricted space. A possible solution could be to connect different quantum computing modules, each containing a limited but controllable number of qubits, on a quantum network which could then be operated as if it was a single quantum machine. In this talk I will discuss a prominent platform to realize such a distributed quantum machine: single neutral atoms trapped at the center of highfinesse optical cavities. The atoms function as stationary qubits which allows for local quantum information processing, while the cavity allows to interface the stationary qubits with singlephotons. Photons can then fly into optical fiber connecting multiple cavities and effectively connecting stationary qubits located at different network nodes. Within this context, I will discuss our recent results which demonstrate the use of this platform to transfer quantum information as well as to implement a first rudimental example of distributed quantum computing: a logic gate between distant qubits. **Host:** J. M. Pitarke