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Golden ratio entang...
Golden ratio entanglement in hexagonally poled nonlinear crystals
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- Gatti, Alessandra (författare)
- CNR, Ist Foton & Nanotecnol, Piazza Leonardo Da Vinci 32, Milan, Italy.;Univ Insubria, Dipartimento Sci & Alta Tecnol, Via Valleggio 11, Como, Italy.
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- Brambilla, Enrico (författare)
- Univ Insubria, Dipartimento Sci & Alta Tecnol, Via Valleggio 11, Como, Italy.
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- Gallo, Katia, 1972- (författare)
- KTH,Kvant- och biofotonik,Nonlinear and Quantum Photonics
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- Jedrkiewicz, Ottavia (författare)
- CNR, Ist Foton & Nanotecnol, Piazza Leonardo Da Vinci 32, Milan, Italy.;Univ Insubria, Dipartimento Sci & Alta Tecnol, Via Valleggio 11, Como, Italy.
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CNR, Ist Foton & Nanotecnol, Piazza Leonardo Da Vinci 32, Milan, Italy;Univ Insubria, Dipartimento Sci & Alta Tecnol, Via Valleggio 11, Como, Italy. Univ Insubria, Dipartimento Sci & Alta Tecnol, Via Valleggio 11, Como, Italy. (creator_code:org_t)
- AMER PHYSICAL SOC, 2018
- 2018
- Engelska.
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Ingår i: Physical Review A: covering atomic, molecular, and optical physics and quantum information. - : AMER PHYSICAL SOC. - 2469-9926 .- 2469-9934. ; 98:5
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- This work analyzes the quantum state of twin photons and twin beams generated by parametric down-conversion in a hexagonally poled photonic crystal, characterized by the simultaneous presence of two nonlinear processes sustained by two vectors of the reciprocal lattice. In those special points of the fluorescence spectrum where the two processes coexist, we show that a tripartite entangled state is realized, equivalent to a single parametric process followed by a beam splitter. By proper angle tuning, a peculiar resonance condition is reached, with a transition to a four-mode entanglement, dominated by the golden ratio of the segment phi = (1 + root 5)/2. A maximal coherence between the two nonlinear processes is established here, as the overall process is shown to be equivalent to two independent parametric processes followed by a beam splitter. We offer an interpretation of the occurrence of the golden ratio in this system based on an analogy between the evolution of the light modes and the Fibonacci sequence.
Ämnesord
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
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- art (ämneskategori)
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