1GHz clocked distribution of electrically generated entangled photon pairs
arXiv:2004.14880 · doi:10.1364/OE.405466
Abstract
Quantum networks are essential for realising distributed quantum computation and quantum communication. Entangled photons are a key resource, with applications such as quantum key distribution, quantum relays, and quantum repeaters. All components integrated in a quantum network must be synchronised and therefore comply with a certain clock frequency. In quantum key distribution, the most mature technology, clock rates have reached and exceeded 1GHz. Here we show the first electrically pulsed sub-Poissonian entangled photon source compatible with existing fiber networks operating at this clock rate. The entangled LED is based on InAs/InP quantum dots emitting in the main telecom window, with a multi-photon probability of less than 10% per emission cycle and a maximum entanglement fidelity of 89%. We use this device to demonstrate GHz clocked distribution of entangled qubits over an installed fiber network between two points 4.6km apart.
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Cited by in corpus (8)
- Quantum Communication Using Semiconductor Quantum Dots
- High-rate intercity quantum key distribution with a semiconductor single-photon source
- A Quantum Key Distribution Testbed using a Plug&Play Telecom-wavelength Single-Photon Source
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