Journal article
On-Demand Source of Dual-Rail Photon Pairs Based on Chiral Interaction in a Nanophotonic Waveguide
PRX quantum, Vol.3(2), p.020363
06/01/2022
DOI: 10.1103/PRXQuantum.3.020363
Abstract
Entanglement is the fuel of advanced quantum technology, enabling, e.g., measurement-based quantum computing and loss-tolerant encoding of quantum information. In photonics, entanglement has tradition-ally been generated probabilistically, requiring massive multiplexing for scaling up to many photons. An alternative approach utilizing quantum emitters in nanophotonic devices can realize deterministic genera-tion of entangled photons. However, such sources generate polarization entanglement that is incompatible with spatial dual-rail qubit encoding employed in scalable photonic quantum-computing platforms uti-lizing integrated circuits. Here we propose and experimentally realize an on-demand source of dual-rail photon pairs using a quantum dot in a planar nanophotonic waveguide. The source exploits the cascaded decay of a biexciton state and chiral light-matter coupling to achieve deterministic generation of spatial dual-rail Bell pairs with the amount of entanglement determined by the chirality. The operational princi-ple can readily be extended to multiphoton entanglement generation required for efficient preparation of resource states for photonic quantum computing.
Details
- Title: Subtitle
- On-Demand Source of Dual-Rail Photon Pairs Based on Chiral Interaction in a Nanophotonic Waveguide
- Creators
- Freja T. Ostfeldt - University of CopenhagenEva M. Gonzalez-Ruiz - University of CopenhagenNils Hauff - University of CopenhagenYing Wang - University of CopenhagenAndreas D. Wieck - Ruhr University BochumArne Ludwig - Ruhr University BochumRuediger Schott - Ruhr University BochumLeonardo Midolo - University of CopenhagenAnders S. Sorensen - University of CopenhagenRavitej Uppu - University of CopenhagenPeter Lodahl - University of Copenhagen
- Resource Type
- Journal article
- Publication Details
- PRX quantum, Vol.3(2), p.020363
- DOI
- 10.1103/PRXQuantum.3.020363
- ISSN
- 2691-3399
- eISSN
- 2691-3399
- Publisher
- Amer Physical Soc
- Number of pages
- 8
- Grant note
- CDFA-05-06 / DFH/UFA DNRF 139 / Dan-marks Grundforskningsfond; Danmarks Grundforskningsfond 824140; 801199 / European Union; European Commission; Spanish Government
- Language
- English
- Date published
- 06/01/2022
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984442011202771
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