Fiber-compatible photonic feed-forward with 99% fidelity
Abstract
Both photonic quantum computation and the establishment of a quantum internet require fiber-based measurement and feed-forward in order to be compatible with existing infrastructure. Here we present a fiber-compatible scheme for measurement and feed-forward, whose performance is benchmarked by carrying out remote preparation of single-photon polarization states at telecom-wavelengths. The result of a projective measurement on one photon deterministically controls the path a second photon takes with ultrafast optical switches. By placing well-calibrated bulk passive polarization optics in the paths, we achieve a measurement and feed-forward fidelity of (99.0 ± 1)%, after correcting for other experimental errors. Our methods are useful for photonic quantum experiments including computing, communication, and teleportation.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 21, 2021
- Source ID
- 10.1364/oe.409867
Entities
People
- Guilherme L. Zanin
- Irati Alonso Calafell
- Lee A. Rozema
- Maxime Jacquet
- Michele Spagnolo
- Peter Schiansky
- Philip Walther
Organizations
- Air Force Office of Scientific Research
- Austrian Research Promotion Agency
- Austrian Science Fund
- Christian Doppler Research Association
- European Commission
- National Council for Scientific and Technological Development