Opaque atoms turn transparent in the vacuum field of an optical cavity

Physics Today ◽  
2011 ◽  
Vol 64 (11) ◽  
pp. 14-16 ◽  
Author(s):  
R. Mark Wilson
Keyword(s):  
Optical Cavity ◽  
Vacuum Field

Phase-sensitive reflection of squeezed vacuum field in optical cavity

2012 ◽  
Vol 10 (9) ◽  
pp. 091901-91904
Author(s):  
Ke Di Ke Di ◽  
Xudong Yu Xudong Yu ◽  
Fengyu Cheng Fengyu Cheng ◽  
Jing Zhang Jing Zhang
Keyword(s):  
Optical Cavity ◽  
Vacuum Field ◽  
Squeezed Vacuum ◽  
Phase Sensitive

scholarly journals Tilting a ground-state reactivity landscape by vibrational strong coupling

Science ◽  
2019 ◽  
Vol 363 (6427) ◽  
pp. 615-619 ◽  
Author(s):  
A. Thomas ◽  
L. Lethuillier-Karl ◽  
K. Nagarajan ◽  
R. M. A. Vergauwe ◽  
J. George ◽  
...  
Keyword(s):  
Strong Coupling ◽  
Activation Barrier ◽  
Bond Cleavage ◽  
Optical Cavity ◽  
Vacuum Field ◽  
Activation Entropy ◽  
Vibrational Modes ◽  
Cleavage Sites ◽  
Chemical Methods ◽  
Site Selectivity

Many chemical methods have been developed to favor a particular product in transformations of compounds that have two or more reactive sites. We explored a different approach to site selectivity using vibrational strong coupling (VSC) between a reactant and the vacuum field of a microfluidic optical cavity. Specifically, we studied the reactivity of a compound bearing two possible silyl bond cleavage sites—Si–C and Si–O, respectively—as a function of VSC of three distinct vibrational modes in the dark. The results show that VSC can indeed tilt the reactivity landscape to favor one product over the other. Thermodynamic parameters reveal the presence of a large activation barrier and substantial changes to the activation entropy, confirming the modified chemical landscape under strong coupling.

scholarly journals Vacuum-Induced Transparency

Science ◽  
2011 ◽  
Vol 333 (6047) ◽  
pp. 1266-1269 ◽  
Author(s):  
Haruka Tanji-Suzuki ◽  
Wenlan Chen ◽  
Renate Landig ◽  
Jonathan Simon ◽  
Vladan Vuletić
Keyword(s):  
Cold Atoms ◽  
Quantum Information Processing ◽  
Condensed Matter ◽  
Optical Cavity ◽  
Photon Number ◽  
Vacuum Field ◽  
Strongly Coupled ◽  
Strongly Nonlinear ◽  
Pass Through ◽  
Induced Transparency

Photons are excellent information carriers but normally pass through each other without consequence. Engineered interactions between photons would enable applications as varied as quantum information processing and simulation of condensed matter systems. Using an ensemble of cold atoms strongly coupled to an optical cavity, we found that the transmission of light through a medium may be controlled with few photons and even by the electromagnetic vacuum field. The vacuum induces a group delay of 25 nanoseconds on the input optical pulse, corresponding to a light velocity of 1600 meters per second, and a transparency of 40% that increases to 80% when the cavity is filled with 10 photons. This strongly nonlinear effect provides prospects for advanced quantum devices such as photon number–state filters.

scholarly journals Tilting a Ground State Reactivity Landscape by Vibrational Strong Coupling

2018 ◽  
Author(s):  
Anoop Thomas ◽  
Lucas Lethuillier-Karl ◽  
Kalaivanan Nagarajan ◽  
Robrecht M. A. Vergauwe ◽  
Jino George ◽  
...  
Keyword(s):  
Strong Coupling ◽  
Activation Barrier ◽  
Chemical Reactivity ◽  
Bond Cleavage ◽  
Optical Cavity ◽  
Vacuum Field ◽  
Activation Entropy ◽  
Cleavage Sites ◽  
Site Selectivity ◽  
First Time

Site-selectivity is fundamental for steering chemical reactivity towards a given product and various efficient chemical methods have been developed for this purpose. Here we explore a very different approach by using vibrational strong coupling (VSC) between a reactant and the vacuum field of a microfluidic optical cavity. For this purpose, the reactivity of a compound bearing two possible silyl bond cleavage sites, at Si-C and Si-O, was studied as a function of VSC of its various vibrational modes in the dark. The results show that VSC can indeed tilt the reactivity landscape to favor one product over the other. Thermodynamic parameters reveal the presence of a large activation barrier and significant changes to the activation entropy, confirming the modified chemical landscape under strong coupling. This study shows for the first time that VSC can impart site-selectivity for chemical reactions without the need for chemical intervention.

scholarly journals Tilting a Ground State Reactivity Landscape by Vibrational Strong Coupling

2018 ◽  
Author(s):  
Anoop Thomas ◽  
Lucas Lethuillier-Karl ◽  
Kalaivanan Nagarajan ◽  
Robrecht M. A. Vergauwe ◽  
Jino George ◽  
...  
Keyword(s):  
Strong Coupling ◽  
Activation Barrier ◽  
Chemical Reactivity ◽  
Bond Cleavage ◽  
Optical Cavity ◽  
Vacuum Field ◽  
Activation Entropy ◽  
Cleavage Sites ◽  
Site Selectivity ◽  
First Time

Site-selectivity is fundamental for steering chemical reactivity towards a given product and various efficient chemical methods have been developed for this purpose. Here we explore a very different approach by using vibrational strong coupling (VSC) between a reactant and the vacuum field of a microfluidic optical cavity. For this purpose, the reactivity of a compound bearing two possible silyl bond cleavage sites, at Si-C and Si-O, was studied as a function of VSC of its various vibrational modes in the dark. The results show that VSC can indeed tilt the reactivity landscape to favor one product over the other. Thermodynamic parameters reveal the presence of a large activation barrier and significant changes to the activation entropy, confirming the modified chemical landscape under strong coupling. This study shows for the first time that VSC can impart site-selectivity for chemical reactions without the need for chemical intervention.

Casimir forces and vacuum energy

2017 ◽  
Author(s):  
Serge Reynaud ◽  
Astrid Lambrecht
Keyword(s):  
Casimir Force ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Thermal Fluctuations ◽  
Model Systems ◽  
Vacuum Field ◽  
Force Measurements ◽  
Casimir Forces ◽  
Current State ◽  
Field Fluctuations

The Casimir force is an effect of quantum vacuum field fluctuations, with applications in many domains of physics. The ideal expression obtained by Casimir, valid for perfect plane mirrors at zero temperature, has to be modified to take into account the effects of the optical properties of mirrors, thermal fluctuations, and geometry. After a general introduction to the Casimir force and a description of the current state of the art for Casimir force measurements and their comparison with theory, this chapter presents pedagogical treatments of the main features of the theory of Casimir forces for one-dimensional model systems and for mirrors in three-dimensional space.

Colored, see-through perovskite solar cells employing an optical cavity

2015 ◽  
Vol 3 (21) ◽  
pp. 5377-5382 ◽  
Author(s):  
Kyu-Tae Lee ◽  
Masanori Fukuda ◽  
Suneel Joglekar ◽  
L. Jay Guo
Keyword(s):  
Solar Cells ◽  
Optical Cavity ◽  
Perovskite Solar Cells

Optical cavity-integrated perovskite solar cells capable of creating distinctive semitransparent colors with high efficiencies are demonstrated.

scholarly journals Differentiating and quantifying exosome secretion from a single cell using quasi-bound states in the continuum

Nanophotonics ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 1081-1086 ◽  
Author(s):  
Abdoulaye Ndao ◽  
Liyi Hsu ◽  
Wei Cai ◽  
Jeongho Ha ◽  
Junhee Park ◽  
...  
Keyword(s):  
Single Cell ◽  
Optical Sensors ◽  
Figure Of Merit ◽  
Bound States ◽  
Single Cell Analysis ◽  
Optical Cavity ◽  
High Sensitivity ◽  
Cell Secretion ◽  
The Continuum ◽  
Refractive Index Detection

AbstractOne of the key challenges in biology is to understand how individual cells process information and respond to perturbations. However, most of the existing single-cell analysis methods can only provide a glimpse of cell properties at specific time points and are unable to provide cell secretion and protein analysis at single-cell resolution. To address the limits of existing methods and to accelerate discoveries from single-cell studies, we propose and experimentally demonstrate a new sensor based on bound states in the continuum to quantify exosome secretion from a single cell. Our optical sensors demonstrate high-sensitivity refractive index detection. Because of the strong overlap between the medium supporting the mode and the analytes, such an optical cavity has a figure of merit of 677 and sensitivity of 440 nm/RIU. Such results facilitate technological progress for highly conducive optical sensors for different biomedical applications.

scholarly journals A Nanoscale Photonic Crystal Cavity Optomechanical System for Ultrasensitive Motion Sensing

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 462
Author(s):  
Ji Xia ◽  
Fuyin Wang ◽  
Chunyan Cao ◽  
Zhengliang Hu ◽  
Heng Yang ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Optical Cavity ◽  
Optical Quality ◽  
Optical Force ◽  
Mechanical Oscillator ◽  
Maximum Displacement ◽  
Optomechanical System ◽  
High Optical Quality ◽  
Hybrid Platform ◽  
Optomechanical Coupling

Optomechanical nanocavities open a new hybrid platform such that the interaction between an optical cavity and mechanical oscillator can be achieved on a nanophotonic scale. Owing to attractive advantages such as ultrasmall mass, high optical quality, small mode volume and flexible mechanics, a pair of coupled photonic crystal nanobeam (PCN) cavities are utilized in this paper to establish an optomechanical nanosystem, thus enabling strong optomechanical coupling effects. In coupled PCN cavities, one nanobeam with a mass meff~3 pg works as an in-plane movable mechanical oscillator at a fundamental frequency of . The other nanobeam couples light to excite optical fundamental supermodes at and 1554.464 nm with a larger than 4 × 104. Because of the optomechanical backaction arising from an optical force, abundant optomechanical phenomena in the unresolved sideband are observed in the movable nanobeam. Moreover, benefiting from the in-plane movement of the flexible nanobeam, we achieved a maximum displacement of the movable nanobeam as 1468 . These characteristics indicate that this optomechanical nanocavity is capable of ultrasensitive motion measurements.

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