Universal entanglement loss induced by angular uncertainty
| Autor: | Giacomo Sorelli, Vyacheslav N. Shatokhin, Andreas Buchleitner |
|---|---|
| Přispěvatelé: | Physikalisches Institut [Freiburg], Albert-Ludwigs-Universität Freiburg, DEMR, ONERA, Université Paris Saclay [Palaiseau], ONERA-Université Paris-Saclay, Freiburg Institute for Advanced Studies [Freiburg, Germany] |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
[PHYS]Physics [physics] Quantum Physics business.industry FOS: Physical sciences Quantum entanglement 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 010309 optics [SPI]Engineering Sciences [physics] Optics Quantum mechanics 0103 physical sciences 010306 general physics business Quantum Physics (quant-ph) |
| Zdroj: | Journal of Optics Journal of Optics, Institute of Physics (IOP), 2020, 22 (2), 024002, p.1-6. ⟨10.1088/2040-8986/ab66d0⟩ |
| ISSN: | 2040-8978 2040-8986 |
| DOI: | 10.1088/2040-8986/ab66d0⟩ |
| Popis: | We study the diffraction of two maximally entangled qubits encoded into spatial modes of light with orbital angular momenta $\pm \hbar l_0$, on angular apertures. Exploiting the uncertainty relation between angular position and momentum, we quantify the diffraction-induced entanglement loss, for different $l_0$, as a function of the angular uncertainty $\Delta \phi$ induced by the apertures. We demonstrate that the degradation of entanglement follows a universal law parametrised by the product $l_0\Delta \phi$ alone.} {We study the diffraction of two photonic qubits, which are initially maximally entangled in their orbital angular momenta, on angular apertures. Using the uncertainty relation between angular position and momentum, we show that the diffraction-induced entanglement losses exhibit universal behaviour. Comment: 10 pages, 4 figures, updated version as accepted for publication in journal of optics, comments are welcome |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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