23/06/2016 1 Generation of entangled quantum states in nonlinear plasmonic structures and metamaterials Alexander N. Poddubny 1,2,3 , Ivan V. Iorsh 2 , and Andrey A. Sukhorukov 1 1 Nonlinear Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, Australia 2 ITMO University, St. Petersburg, Russia 3 Ioffee Institute, St. Petersburg, Russia Outline • Introduction: photon entanglement • Photon-pair and photon- plasmon generation in nonlinear metamaterials • Hyperbolic metamaterial: broadband enhancement • Quantum-classical correspondence • Nonlinear dielectric nanoresonators and metasurfaces
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23/06/2016
1
Generation of entangled quantum
states in nonlinear plasmonic
structures and metamaterials
Alexander N. Poddubny1,2,3, Ivan V. Iorsh2,
and Andrey A. Sukhorukov1
1 Nonlinear Physics Centre, Research School of Physics and
Engineering, Australian National University, Canberra, Australia
2 ITMO University, St. Petersburg, Russia
3 Ioffee Institute, St. Petersburg, Russia
Outline
• Introduction: photon
entanglement
• Photon-pair and photon-
plasmon generation in nonlinear
metamaterials
• Hyperbolic metamaterial:
broadband enhancement
• Quantum-classical
correspondence
• Nonlinear dielectric
nanoresonators and
metasurfaces
23/06/2016
2
Entanglement
The entanglement is essential in quantum computation,
cryptography, metrology, teleportation, information processing.
|1
|2
A
|1
|2
B
Quantum entanglement occurs when pairs or groups of
particles are generated or interact such that the quantum
state of each particle cannot be described independently
1
2(|1 𝐴⨂|2 𝐵 + 𝑒−𝑖𝜃𝐴𝐵|2 𝐴⨂|1 𝐵)
Integrated Quantum Photonics
IBM’s Integrated
Nanophotonics Chip
(classical regime)
Bristol Uni integrated
quantum chip
23/06/2016
3
Nonlinear generation of photon pairs
Spontaneous parametric
downconversion
(SPDC)
Spontaneous four-wave
mixing
(SFWM)
Quantum optics with dielectric waveguide circuits
Quantum state control Shadbolt et al. Nat. Photon. 6, 45 (2012)
On-chip SPDC photon sources –
higher efficiency and greater flexibility
compared to bulk crystals Leng et al., Nature Comm. 2, 429 (2011)