Abstract
We describe a new scheme to interconvert stationary and photonic qubits which is based on indirect qubit-light interactions mediated by a mechanical resonator. This approach does not rely on the specific optical response of the qubit and thereby enables optical quantum interfaces for a wide range of solid state spin and charge based systems. We discuss the implementation of state transfer protocols between distant nodes of a quantum network and show that high transfer fidelities can be achieved under realistic experimental conditions.
Highlights
Many quantum information applications rely on efficient ways to distribute quantum states either within a large computing architecture or over long distances for quantum communication
We discuss the implementation of state transfer protocols between distant nodes of a quantum network and show that high transfer fidelities can be achieved under realistic experimental conditions
This provides a natural setting for an opto-mechanical transducer (OMT), where indirect qubit-photon interactions are mediated by vibrations of a macroscopic mechanical device
Summary
Many quantum information applications rely on efficient ways to distribute quantum states either within a large computing architecture or over long distances for quantum communication. Excitations from the qubit can be transfered to the mechanical oscillator and mapped onto a traveling photon in a process which does not rely on optical properties of the qubit and allows the qubit to be spatially separated from the light field. This scheme is suited for various solid state spin, charge or superconducting qubits which do not interact coherently with light and provides a basic building block for many optical quantum communication applications.
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