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
13:00  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