fotónica cuántica integrada
TRANSCRIPT
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Fotónica cuántica integrada
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Generar Manipular Detectar
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Qubit
𝜓 =𝛼 0 + 𝛽 1 𝛼 2 + 𝛽 2 = 1
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𝜓 = cos𝜃
2 0 + 𝑒𝑖𝜙sin
𝜃
2 1
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Generar
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Entrelazamiento cuántico
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Electrónica
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Puerta lógica
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Electrónica
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Almacenamiento Bit
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Fotónica cuántica integrada
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Hardware
1. Fuentes de qubits (fotones)
2. Circuitos fotónicos
3. Compuertas lógicas
4. Memoria
5. Dispositivos de lectura
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Compuerta lógica cuántica
• Manera de manipular información cuántica
• Bloques fundamentales en los circuitos cuánticos
• Compuertas lógicas cuánticas son representadas por matrices unitarias
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NOT Gate
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cNOT Gate
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Almacenamiento Información
• “Solid state quantum memory using the 31P nuclear spin”
• Spin electrón
• Interface entre luz y materia
• Guardar y recuperar
• Se debe mantener superposición
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Circuitos
“Laser written waveguide photonic quantum circuits”• Chips de Silice de alta pureza
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Fotones recibidos en el chip mediante SMF (Single ModeFibers)Acople a Fotodiodo de avalancha
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Observaciones
• Transmisión de eficiencia del 50% (2 Fotones distinguibles)
Tiempo
• Fotones degenerados (No hay detección simultanea)
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¿Futuro?
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Referencias
• Graham D. Marshall,1,†,⋆ Alberto Politi,2,⋆ Jonathan C. F. Matthews, July 20, 2009, “Laser writtenwaveguide photonic quantum circuit”, Vol. 17, No. 15 / OPTICS EXPRESS 12546
• Jeremy L. O’Brien,1 Akira Furusawa , “Photonic quantum technologies”, March 23, 2010
• Joshua W. Silverstone, Damien Bonneau, Jeremy L. O’Brien, and Mark G. Thompson, “SiliconQuantum Photonics”, NOVEMBER/DECEMBER 2016 , IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS, VOL. 22, NO. 6