Broadband enhancement of light-matter interaction in photonic crystal cavities integrating site-controlled quantum dots

A paradigm for high buffering performance with an essential fulfillment for sensing and modulation was set forth. Through substituting the fundamental two rows of air holes in an elongated hexagonal photonic crystal (E-PhC) by one row of the triangular gaps, the EPCW is molded to form an irregular waveguide. By properly adjusting the triangle dimension solitary, we fulfilled the lowest favorable value of the physical-size of each stored bit by about μ5.5510 μm. Besides, the EPCW is highly sensitive to refractive index (RI) perturbation attributed to the medium through infiltrating the triangular gaps inside the EPCW by microfluid with high RI sensitivity of about 379.87 nm/RIU. Furthermore, dynamic modulation can be achieved by applying external voltage and high electro-optical (EO) sensitivity is obtained of about 748.407 nm/RIU. The higher sensitivity is attributable to strong optical confinement in the waveguide region and enhanced light-matter interaction in the region of the microfluid triangular gaps inside the EPCW and conventional gaps (air holes). The EPCW structure enhances the interaction between the light and the sensing medium.

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A scheme for direct implementation of a two-target qubit controlled phase gate with quantum dots in coupled photonic crystal cavities without using classical laser pulses

Laser Physics Letters ◽

10.1088/1612-2011/11/12/125202 ◽

2014 ◽

Vol 11 (12) ◽

pp. 125202 ◽

Cited By ~ 3

Author(s):

Xin-Xin Jiang ◽

Wen-Xue Cui ◽

Shi Hu ◽

Cheng-Shou An ◽

Hong-Fu Wang

Keyword(s):

Quantum Dots ◽

Photonic Crystal ◽

Laser Pulses ◽

Photonic Crystal Cavities ◽

Phase Gate ◽

Controlled Phase Gate ◽

Target Qubit ◽

Direct Implementation

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Quantum optics and cavity QED with quantum dots in photonic crystals

10.1093/oso/9780198768609.003.0008 ◽

2017 ◽

Author(s):

Jelena Vučković

Keyword(s):

Quantum Dots ◽

Information Processing ◽

Quantum Information ◽

Quantum Optics ◽

Quantum Electrodynamics ◽

Cavity Qed ◽

Cavity Quantum Electrodynamics ◽

Test Bed ◽

Matter Interaction ◽

Light Matter Interaction

Quantum dots in optical nanocavities are interesting as a test-bed for fundamental studies of light–matter interaction (cavity quantum electrodynamics, QED), as well as an integrated platform for information processing. As a result of the strong field localization inside sub-cubic-wavelength volumes, these dots enable very large emitter–field interaction strengths. In addition to their use in the study of new regimes of cavity QED, they can also be employed to build devices for quantum information processing, such as ultrafast quantum gates, non-classical light sources, and spin–photon interfaces. Beside quantum information systems, many classical information processing devices, such as lasers and modulators, benefit greatly from the enhanced light–matter interaction in such structures. This chapter gives an introduction to quantum dots, photonic crystal resonators, cavity QED, and quantum optics on this platform, as well as possible device applications.

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