Table-top creation of entangled multi-keV photon pairs via the Unruh effect

Abstract

Electrons moving in a strong periodic electromagnetic field (e.g., laser or undulator) may convert quantum vacuum fluctuations into pairs of entangled photons, which can be understood as a signature of the Unruh effect. Apart from verifying this striking phenomenon, the considered effect may allow the construction of a table-top source for entangled photons (``photon pair laser'') and the associated quantum-optics applications in the multi-keV regime with near-future facilities. 04.62.+v, 12.20.Fv, 41.60.-m, 42.50.Dv.

4 pages, 1 figure

References in corpus (1)

• Signatures of the Unruh effect from electrons accelerated by ultra-strong laser fields

Cited by in corpus (4)

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• Bound-free ${\mathbf{e}}^{+}{\mathbf{e}}^{-}$ pair creation with a linearly polarized laser field and a nuclear field
• Quantum radiation by electrons in lasers and the Unruh effect
• Laboratory soft x-ray emission due to the Hawking-Unruh effect?