Abstract
We propose a scalable architecture for a quantum network based on a simple on-chip photonic circuit that performs loss-tolerant two-qubit measurements. The circuit consists of two quantum emitters positioned in the arms of an on-chip Mach-Zehnder interferometer composed of waveguides with chiral-light-matter interfaces. The efficient chiral-light-matter interaction allows the emitters to perform high-fidelity intranode two-qubit parity measurements within a single chip and to emit photons to generate internode entanglement, without any need for reconfiguration. We show that, by connecting multiple circuits of this kind into a quantum network, it is possible to perform universal quantum computation with heralded two-qubit gate fidelities F∼0.998 achievable in state-of-the-art quantum dot systems.
| Originalsprog | Engelsk |
|---|---|
| Artikelnummer | 240501 |
| Tidsskrift | Physical Review Letters |
| Vol/bind | 117 |
| ISSN | 0031-9007 |
| DOI | |
| Status | Udgivet - 5 dec. 2016 |