Stimulated emission of polarization-entangled photons

2001/08/01 by Antia Lamas-Linares, Antı́a Lamas-Linares, John C. Howell +2 · 11 citations
Computer Science · Physics and Astronomy · #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum optics and atomic interactions #quant-ph

paper · pdf · doi:10.1038/35091014

published as Nature, 412, 2001, 887-890 · 5 pages, 4 figures, RevTeX 4

openalex publication_date 2001/08/01 · arxiv created 2001/10/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Entangled photon pairs -- discrete light quanta that exhibit non-classical correlations -- play a crucial role in quantum information science (for example in demonstrations of quantum non-locality and quantum cryptography). At the macroscopic optical field level non-classical correlations can also be important, as in the case of squeezed light, entangled light beams and teleportation of continuous quantum variables. Here we use stimulated parametric down-conversion to study entangled states of light that bridge the gap between discrete and macroscopic optical quantum correlations. We demonstrate experimentally the onset of laser-like action for entangled photons. This entanglement structure holds great promise in quantum information science where there is a strong demand for entangled states of increasing complexity.

Citations

• Violation of Bell's inequality under strict Einstein locality conditions
• Quantum Cryptography with Entangled Photons
• New High-Intensity Source of Polarization-Entangled Photon Pairs
• Bell's theorem. Experimental tests and implications

Cited by

• Optical communication noise rejection using correlated photons
• Reality, locality and all that: "experimental metaphysics" and the quantum foundations
• Two independent photon pairs versus four-photon entangled states in parametric down conversion
• Multilevel multiparty singlets as ground states and their role in entanglement distribution
• Sub Shot-Noise interferometric phase sensitivity with Beryllium ions Schroedinger Cat States
• Violation of local uncertainty relations as a signature of entanglement
• Long-distance teleportation of qubits at telecommunication wavelengths
• Coherent Collisions between Bose-Einstein Condensates
• Experimental entanglement quantification and verification via uncertainty relations
• Optimal cloning of single-photon polarization by coherent feedback of beam splitter losses
• Signatures for Generalized Macroscopic Superpositions