Aarhus University Seal / Aarhus Universitets segl

Klaus Mølmer

Deterministic quantum network for distributed entanglement and quantum computation

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review



We propose a simple interaction protocol to be implemented on a scalable quantum network, in which the quantum nodes consist of qubit systems confined in cavities. The nodes are deterministically coupled by transmission and reflection of a single photon, which is disentangled from the qubits at the end of the coupling operation. This single photon can generate an entangling controlled-PHASE gate between any selected number of qubits in the network. Our multiqubit gate reaches a much higher fidelity compared to schemes concatenating one-qubit and two-qubit gates; thus it forms an efficient basis for universal quantum computing distributed over multiple processor units. In our analysis we consider atomic qubits coupled to optical photons, while the scheme
can be readily generalized to other architectures, such as superconducting qubit nodes coupled by microwave photons.
TidsskriftPhysical Review A
Antal sider5
StatusUdgivet - 24 sep. 2018

Se relationer på Aarhus Universitet Citationsformater

ID: 133365166