Fiber-compatible photonic feed-forward with 99% fidelity
- URL: http://arxiv.org/abs/2009.07868v2
- Date: Wed, 6 Jan 2021 14:06:20 GMT
- Title: Fiber-compatible photonic feed-forward with 99% fidelity
- Authors: G. L. Zanin, M. J. Jacquet, M. Spagnolo, P. Schiansky, I. Alonso
Calafell, L. A. Rozema and P. Walther
- Abstract summary: We present a fiber-compatible scheme for measurement and feed-forward.
Our methods are useful for photonic quantum experiments including computing, communication, and teleportation.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- 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 $\pm$ 1)%, after correcting for
other experimental errors. Our methods are useful for photonic quantum
experiments including computing, communication, and teleportation.
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