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Quantum Algorithms
A truncated photon
arXiv
Authors: Isak Cecil Onsager Rukan, Jan Gulla, Johannes Skaar
Year
2025
Paper ID
50776
Status
Preprint
Abstract Read
~2 min
Abstract Words
95
Citations
N/A
Abstract
An elementary particle such as a photon cannot be cut in two pieces. Still it must be possible to truncate a photon with an optical shutter. The result is not another photon or a mix of a photon and a vacuum. Instead it is a superposition and mix of photon numbers up to infinity. This state is rather complicated, but nevertheless locally equivalent to a single photon or vacuum in disjoint regions. Finally we demonstrate how the truncated photon may be illuminating and useful for the understanding of locality and equivalence in quantum field theory.
Why This Paper Matters
- It adds a 2025 reference point for readers tracking recent quantum research.
- An elementary particle such as a photon cannot be cut in two pieces.
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