Ultrafast switching of telecom photon-number states
- URL: http://arxiv.org/abs/2504.12376v1
- Date: Wed, 16 Apr 2025 18:00:00 GMT
- Title: Ultrafast switching of telecom photon-number states
- Authors: Kate L. Fenwick, Frédéric Bouchard, Alicia Sit, Timothy Lee, Andrew H. Proppe, Guillaume Thekkadath, Duncan England, Philip J. Bustard, Benjamin J. Sussman,
- Abstract summary: We demonstrate ultrafast all-optical switching of heralded photon-number states using the optical Kerr effect in a single-mode fiber.<n>A switching efficiency of >99% is reached with a signal-to-noise ratio of 32,000.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: A crucial component of photonic quantum information processing platforms is the ability to modulate, route, convert, and switch quantum states of light noiselessly with low insertion loss. For instance, a high-speed, low-loss optical switch is crucial for scaling quantum photonic systems that rely on measurement-based feed-forward approaches. Here, we demonstrate ultrafast all-optical switching of heralded photon-number states using the optical Kerr effect in a single-mode fiber. A local birefringence is created by a high-intensity pump pulse at a center wavelength of 1030nm that temporally overlaps with the 1550nm photon-number states in the fiber. By taking advantage of the dispersion profile of commercially available single-mode fibers, we achieve all-optical switching of photon-number states, with up to 6 photons, with a switching resolution of 2.3ps. A switching efficiency of >99% is reached with a signal-to-noise ratio of 32,000.
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