Generation of a two-photon singlet beam

Abstract

Controlling the pump beam transverse profile in multimode Hong-Ou-Mandel interference, we generate a ''localized" two-photon singlet state, in which both photons propagate in the same beam. This type of multi-photon singlet beam may useful in quantum communication to avoid decoherence. We show that although the photons are part of the same beam, they are never in the same plane wave mode, which is characterized by spatial antibunching behavior in the plane normal to the propagation direction.

4 pages, 4 figures

References in corpus (4)

• Multimode Hong-Ou-Mandel interference
• Experimental observation of spatial antibunching of photons
• Generation of spatial antibunching with free propagating twin beams
• Spatial antibunching of photons with parametric down-conversion

Cited by in corpus (13)

• Spatial correlations in parametric down-conversion
• Continuous variable quantum computation with spatial degrees of freedom of photons
• A Family of Continuous Variable Entanglement Criteria using General Entropy Functions
• Experimental Observation of Quantum Correlations in Modular Variables
• Boosting entanglement generation in down-conversion with incoherent illumination
• Spectral Polarization and Spectral Phase Control of Time and Energy Entangled Photons
• Antisymmetric entangled two-photon states generated in nonlinear GaN/AlN photonic-band-gap structures
• Klyshko's Advanced-Wave Picture in Stimulated Parametric Down-Conversion with a Spatially Structured Pump Beam
• General class of continuous variable entanglement criteria
• Detecting continuous variable entanglement in phase space with the $Q$-distribution
• Multimode Hong-Ou-Mandel Interferometry
• Engineering of Hong-Ou-Mandel interference with effective noise
• States, Modes, Fields, and Photons in Quantum Optics