scholarly journals Quantum optics and cavity QED with quantum dots in photonic crystals

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.

scholarly journals Solid-state quantum optics with quantum dots in photonic nanostructures

Nanophotonics ◽  
2013 ◽  
Vol 2 (1) ◽  
pp. 39-55 ◽  
Author(s):  
Peter Lodahl ◽  
Søren Stobbe
Keyword(s):  
Quantum Dots ◽  
Solid State ◽  
Quantum Optics ◽  
Quantum Electrodynamics ◽  
Single Photon ◽  
Photonic Band Gap ◽  
Photon Emission ◽  
Cavity Quantum Electrodynamics ◽  
Single Photons ◽  
Point Dipole

AbstractQuantum nanophotonics has become a new research frontier where quantum optics is combined with nanophotonics in order to enhance and control the interaction between strongly confined light and quantum emitters. Such progress provides a promising pathway towards quantum-information processing on an all-solid-state platform. Here we review recent progress on experiments with quantum dots in nanophotonic structures with special emphasis on the dynamics of single-photon emission. Embedding the quantum dots in photonic band-gap structures offers a way of controlling spontaneous emission of single photons to a degree that is determined by the local light-matter coupling strength. Introducing defects in photonic crystals implies new functionalities. For instance, efficient and strongly confined cavities can be constructed enabling cavity-quantum-electrodynamics experiments. Furthermore, the speed of light can be tailored in a photonic-crystal waveguide forming the basis for highly efficient single-photon sources where the photons are channeled into the slowly propagating mode of the waveguide. Finally, we will discuss some of the surprises that arise in solid-state implementations of quantum-optics experiments in comparison to their atomic counterparts. In particular, it will be shown that the celebrated point-dipole description of light-matter interaction can break down when quantum dots are coupled to plasmon nanostructures.

PREPARATION AND MANIPULATION OF W-CLASS ENTANGLED STATES: APPLICATIONS TO QUANTUM-INFORMATION PROCESSING

2009 ◽  
Vol 07 (02) ◽  
pp. 493-504 ◽  
Author(s):  
XIN-WEN WANG
Keyword(s):  
Information Processing ◽  
Quantum Information ◽  
Quantum Electrodynamics ◽  
Quantum Information Processing ◽  
Cavity Quantum Electrodynamics ◽  
Separable State ◽  
Special Configuration ◽  
State Formula ◽  
One Step ◽  
Step Generation

We propose a cavity-quantum-electrodynamics scheme for one-step generation of the special configuration of W-class state [Formula: see text] which can implement deterministic teleportation, superdense coding, quantum-information splitting, and phase-covariant telecloning. We also present a method for one-step realization of a nontrivial unitary transformation [Formula: see text] which can transform a standard W state into a fully separable state. The [Formula: see text] operation plays a key role in recently proposed quantum-information processing tasks. Both the schemes are robust against decoherence. In addition, they can endure the error of controlling the interaction time between atoms and cavity. Our ideas can also be generalized to other systems.

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