Entangled, guided photon generation in (1+1)-dimensional photonic crystals

Journal Article · Sat Jul 15 00:00:00 EDT 2006 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.74.013815· OSTI ID:20852978

Sciscione, L; Centini, M; Sibilia, C; Bertolotti, M; Scalora, M ^[1]

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1. Dipartimento di Energetica, Universita 'La Sapienza' di Roma, Via Scarpa 16, 00161 Rome (Italy)

A scheme based on photonic crystal technology is proposed as an ultrabright source of entangled photons on a miniaturized scale. The geometry consists of a multilayer microcavity, excited by a resonant pump frequency, such that the emitted photons are guided transversally to the direction of the incident pump. The entanglement occurs in direction, frequency, and polarization, and the bandwidth of the emitted photons is of the order of 1 nm. We propose a feasible design based on Al{sub 0.3}Ga{sub 0.7}As/Al{sub 2}O{sub 3} structures and predict an emission rate 10{sup 5} pairs per second with 100 mW pump power. These results are promising for realization of chip and future quantum computer applications.

• OSTI ID: 20852978
• Journal Information: Physical Review. A, Vol. 74, Issue 1; Other Information: DOI: 10.1103/PhysRevA.74.013815; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ALUMINIUM OXIDES
CONVERSION
CRYSTALS
EMISSION
GALLIUM ARSENIDES
GEOMETRY
INTERFACES
PHOTONS
POLARIZATION
QUANTUM COMPUTERS
QUANTUM ENTANGLEMENT