scholarly journals Photon emission by nanocavity-enhanced quantum anti-Zeno effect in solid-state cavity quantum-electrodynamics

2008 ◽  
Vol 16 (22) ◽  
pp. 18067 ◽  
Author(s):  
Makoto Yamaguchi ◽  
Takashi Asano ◽  
Susumu Noda
Keyword(s):  
Solid State ◽  
Quantum Electrodynamics ◽  
Photon Emission ◽  
Cavity Quantum Electrodynamics ◽  
Zeno Effect

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.

scholarly journals From a Quantum Paradox to Counterportation

2021 ◽  
Author(s):  
Hatim Salih
Keyword(s):  
Quantum Electrodynamics ◽  
Physical Reality ◽  
Cavity Quantum Electrodynamics ◽  
Classical Communication ◽  
Free Communication ◽  
Zeno Effect ◽  
Measurement Framework ◽  
Simple Question ◽  
Identical Quantum ◽  
Interaction Free Measurement

Abstract We uncover a new quantum paradox, where a simple question about two identical quantum systems reveals unsettlingly paradoxical answers when weak measurements are considered. Our resolution of the paradox, from within the weak measurement framework, amounts to a demonstration of exchange-free communication for the generalised protocol for sending an unknown qubit without any particles travelling between the communicating parties, i.e. counterfactually. The paradox and its resolution are reproduced from a consistent-histories viewpoint. We go on to propose a novel, experimentally feasible implementation of this counterfactual disembodied transport that we call counterportation, based on cavity quantum electrodynamics, estimating resources for beating the no-cloning fidelity limit---except that unlike teleportation no previously-shared entanglement nor classical communication are required. Our approach is several orders of magnitude more efficient in terms of physical resources than previously proposed techniques, while being remarkably tolerant to device imperfections, paving the way for an experimental demonstration. Surprisingly, while counterfactual communication is intuitively explained in terms of interaction-free measurement and the Zeno effect, we show based on our proposed scheme that neither is necessary, with implications in support of an underlying physical reality.

scholarly journals Coupled Photonic Crystal Nanocavities as a Tool to Tailor and Control Photon Emission

Ceramics ◽  
2019 ◽  
Vol 2 (1) ◽  
pp. 34-55 ◽  
Author(s):  
Annamaria Gerardino ◽  
Giorgio Pettinari ◽  
Niccolò Caselli ◽  
Silvia Vignolini ◽  
Francesco Riboli ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Photonic Crystal ◽  
Quantum Electrodynamics ◽  
Photon Emission ◽  
Cavity Quantum Electrodynamics ◽  
Deterministic Approach ◽  
Cavity Modes ◽  
Fabrication And Characterization ◽  
And Control

In this review, we report on the design, fabrication, and characterization of photonic crystal arrays, made of two and three coupled nanocavities. The properties of the cavity modes depend directly on the shape of the nanocavities and on their geometrical arrangement. A non-negligible role is also played by the possible disorder because of the fabrication processes. The experimental results on the spatial distribution of the cavity modes and their physical characteristics, like polarization and parity, are described and compared with the numerical simulations. Moreover, an innovative approach to deterministically couple the single emitters to the cavity modes is described. The possibility to image the mode spatial distribution, in single and coupled nanocavities, combined with the control of the emitter spatial position allows for a deterministic approach for the study of cavity quantum electrodynamics phenomena and for the development of new photonic-based applications.

scholarly journals Polaritonics: from microcavities to sub-wavelength confinement

Nanophotonics ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 641-654 ◽  
Author(s):  
Dario Ballarini ◽  
Simone De Liberato
Keyword(s):  
Solid State ◽  
Strong Coupling ◽  
Quantum Electrodynamics ◽  
Cavity Quantum Electrodynamics ◽  
Atomic Systems ◽  
Figures Of Merit ◽  
Different Characteristics ◽  
Sub Wavelength ◽  
Quantum Emitters

AbstractFollowing the initial success of cavity quantum electrodynamics in atomic systems, strong coupling between light and matter excitations is now achieved in several solid-state set-ups. In those systems, the possibility to engineer quantum emitters and resonators with very different characteristics has allowed access to novel nonlinear and non-perturbative phenomena of both fundamental and applied interest. In this article, we will review some advances in the field of solid-state cavity quantum electrodynamics, focussing on the scaling of the relevant figures of merit in the transition from microcavities to sub-wavelength confinement.

scholarly journals NON-MARKOVIAN DYNAMICS OF CAVITY LOSSES

2009 ◽  
Vol 07 (supp01) ◽  
pp. 41-47 ◽  
Author(s):  
MATTEO SCALA ◽  
BENEDETTO MILITELLO ◽  
ANTONINO MESSINA ◽  
JYRKI PIILO ◽  
SABRINA MANISCALCO ◽  
...  
Keyword(s):  
Excited State ◽  
Solid State ◽  
Master Equation ◽  
Quantum Electrodynamics ◽  
Cavity Quantum Electrodynamics ◽  
Markovian Dynamics ◽  
Microscopic Derivation ◽  
Recent Developments ◽  
Cavity System ◽  
Population Trapping

We provide a microscopic derivation for the non-Markovian master equation for an atom-cavity system with cavity losses and show that they can induce population trapping in the atomic excited state, when the environment outside the cavity has a non-flat spectrum. Our results apply to hybrid solid state systems and can turn out to be helpful to find the most appropriate description of leakage in the recent developments of cavity quantum electrodynamics.

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