High-Finesse Micro-Optical Fabry-Perot Cavity and Its Applications in Strongly Coupled Cavity Quantum Electrodynamics

2021 ◽  
Vol 41 (1) ◽  
pp. 0127001
Author(s):  
张天才 Zhang Tiancai ◽  
毋伟 Wu Wei ◽  
杨鹏飞 Yang Pengfei ◽  
李刚 Li Gang ◽  
张鹏飞 Zhang Pengfei
Keyword(s):  
Quantum Electrodynamics ◽  
Cavity Quantum Electrodynamics ◽  
Strongly Coupled ◽  
Fabry Perot ◽  
High Finesse ◽  
Coupled Cavity

scholarly journals Single-atom transfer in a strongly coupled cavity quantum electrodynamics: experiment and Monte Carlo simulation

2014 ◽  
Vol 63 (24) ◽  
pp. 244205
Author(s):  
Li Wen-Fang ◽  
Du Jin-Jin ◽  
Wen Rui-Juan ◽  
Yang Peng-Fei ◽  
Li Gang ◽  
...  
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Quantum Electrodynamics ◽  
Cavity Quantum Electrodynamics ◽  
Single Atom ◽  
Atom Transfer ◽  
Strongly Coupled ◽  
Coupled Cavity

scholarly journals On-chip High-finesse Fabry-Perot Microcavities for Optical Sensing and Quantum Information

2017 ◽  
Author(s):  
Mohammad H. Bitarafan ◽  
Ray G. DeCorby
Keyword(s):  
Quantum Electrodynamics ◽  
Small Volume ◽  
Cavity Quantum Electrodynamics ◽  
Small Radius ◽  
Radius Of Curvature ◽  
Target Analytes ◽  
Fabry Perot ◽  
On Chip ◽  
High Finesse ◽  
Vacuum Gap

For applications in sensing and cavity-based quantum computing and metrology, open-access Fabry-Perot cavities – with an air or vacuum gap between a pair of high reflectance mirrors – offer important advantages compared to other types of microcavities. For example, they are inherently tunable using MEMS-based actuation strategies, and they enable atomic emitters or target analytes to be located at high field regions of the optical mode. Integration of curved-mirror Fabry-Perot cavities on chips containing electronic, optoelectronic, and optomechanical elements is a topic of emerging importance. Micro-fabrication techniques can be used to create mirrors with small radius-of-curvature, which is a prerequisite for cavities to support stable, small-volume modes. We review recent progress towards chip-based implementation of such cavities, and highlight their potential to address applications in sensing and cavity quantum electrodynamics.

scholarly journals Intrinsically ultrastrong plasmon–exciton interactions in crystallized films of carbon nanotubes

2018 ◽  
Vol 115 (50) ◽  
pp. 12662-12667 ◽  
Author(s):  
Po-Hsun Ho ◽  
Damon B. Farmer ◽  
George S. Tulevski ◽  
Shu-Jen Han ◽  
Douglas M. Bishop ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Quantum Electrodynamics ◽  
Near Infrared ◽  
Cavity Quantum Electrodynamics ◽  
Optical Switches ◽  
Optical Antennas ◽  
Strongly Coupled ◽  
Exciton Coupling ◽  
Exciton Interactions ◽  
Nanotube Films

In cavity quantum electrodynamics, optical emitters that are strongly coupled to cavities give rise to polaritons with characteristics of both the emitters and the cavity excitations. We show that carbon nanotubes can be crystallized into chip-scale, two-dimensionally ordered films and that this material enables intrinsically ultrastrong emitter–cavity interactions: Rather than interacting with external cavities, nanotube excitons couple to the near-infrared plasmon resonances of the nanotubes themselves. Our polycrystalline nanotube films have a hexagonal crystal structure, ∼25-nm domains, and a 1.74-nm lattice constant. With this extremely high nanotube density and nearly ideal plasmon–exciton spatial overlap, plasmon–exciton coupling strengths reach 0.5 eV, which is 75% of the bare exciton energy and a near record for room-temperature ultrastrong coupling. Crystallized nanotube films represent a milestone in nanomaterials assembly and provide a compelling foundation for high-ampacity conductors, low-power optical switches, and tunable optical antennas.

scholarly journals Nanofiber Fabry–Perot microresonator for nonlinear optics and cavity quantum electrodynamics

2012 ◽  
Vol 37 (11) ◽  
pp. 1949 ◽  
Author(s):  
C. Wuttke ◽  
M. Becker ◽  
S. Brückner ◽  
M. Rothhardt ◽  
A. Rauschenbeutel
Keyword(s):  
Nonlinear Optics ◽  
Quantum Electrodynamics ◽  
Cavity Quantum Electrodynamics ◽  
Fabry Perot

New Experiment for the First Direct Measurement of Positronium Hyperfine Splitting with Sub-THz Light

2010 ◽  
Vol 666 ◽  
pp. 133-137 ◽  
Author(s):  
Akira Miyazaki ◽  
Takayuki Yamazaki ◽  
Taikan Suehara ◽  
Toshio Namba ◽  
Shoji Asai ◽  
...  
Keyword(s):  
Present Status ◽  
Quantum Electrodynamics ◽  
Hyperfine Splitting ◽  
Radiation Power ◽  
Bound State ◽  
New Physics ◽  
Ideal System ◽  
Fabry Perot ◽  
Current Design ◽  
High Finesse

Positronium is an ideal system for the research of Quantum Electrodynamics (QED), especially for QED in bound state. The discrepancy of 3.9σ was found recently between the measured HFS values and the QED prediction of O(α3). It might be due to the contribution of unknown new physics or systematic problems in the all previous measurements. We propose a new method to measure HFS directly and precisely. A gyrotron, a novel sub-THz light source is adopted with a Fabry-Pérot cavity with high finesse and an efficient transportation system in order to obtain sufficient radiation power at 203 GHz. The present status of the optimization studies and the current design of the experiment are described.

scholarly journals Large cooperativity in strongly coupled chip-scale photonic-atomic integrated system

2021 ◽  
Author(s):  
Alex Naiman ◽  
Yoel Sebbag ◽  
Eliran Talker ◽  
Yefim Barash ◽  
Liron Stern ◽  
...  
Keyword(s):  
Quantum Electrodynamics ◽  
Quantum Interference ◽  
Atomic System ◽  
Cavity Quantum Electrodynamics ◽  
Quantum Systems ◽  
Integrated System ◽  
Information Storage ◽  
Strongly Coupled ◽  
Rubidium Atoms ◽  
Coupling Rate

Abstract The miniaturization of atomic quantum systems and their integration into silicon microchips paves the way for a wide variety of applications in quantum computing, metrology and magnetometry. A particular interest is found in the integration of quantum entities into the micro and nanoscale photonic resonators to implement chip scale cavity quantum electrodynamics. Here we demonstrate the interaction of a chip scale micro disc resonator with thermal rubidium atoms via the evanescent field of the mode. We observe high Rabi splitting of 4 GHz in the transmission spectrum of the coupled photonic-atomic system due to collective enhancement of the coupling rate by the ensemble of hot atoms and present a theoretical model to support the measured results. This result corresponds to atom-photon cooperativity of ~ 1. Such cooperativity is the onset for quantum interference, needed for high-end chip scale quantum technologies, such as such as quantum manipulation, quantum information storage and processing, and few photon switching.

MIRROR BIREFRINGENCE IN A FABRY-PEROT CAVITY AND THE DETECTION OF VACUUM BIREFRINGENCE IN A MAGNETIC FIELD

1995 ◽  
Vol 10 (28) ◽  
pp. 2125-2134 ◽  
Author(s):  
T.C.P. CHUI ◽  
M. SHAO ◽  
D. REDDING ◽  
Y. GURSEL ◽  
A. BODEN
Keyword(s):  
Magnetic Field ◽  
Quantum Electrodynamics ◽  
State Of The Art ◽  
Beat Frequency ◽  
Polarization Rotation ◽  
High Susceptibility ◽  
First Order ◽  
Fabry Perot ◽  
High Finesse ◽  
The Magnetic Field

Quantum electrodynamics (QED) theory predicts that vacuum under the influence of a strong magnetic field is birefringence. Recently, several groups have proposed to used a high finesse Fabry—Perot cavity to increase the average path length of the light in the magnetic field. This together with the state-of-the-art dipole magnets, should bring the effect within reach of observation. However, the mirrors used in the FP are known to have intrinsic birefringence which is of orders of magnitude larger than the birefringence of the vacuum. In this letter, we analyze the effect of uncontrollable variations of mirror birefringence on two recently proposed optical schemes. The first scheme,1 which we called the frequency scheme, is based on measurement of the beat frequency of two orthogonal polarized laser beams in the cavity. We show that mirror birefringence contributes to the detection uncertainties in first order, resulting in a high susceptibility to variations of its value. In the second scheme, which we called the polarization scheme, laser polarized at 45° relative to the B-field is injected into the cavity. The ellipticity and polarization rotation of the light exiting the cavity is measured.2 Under this scheme, mirror birefringence contributes as a correction of the QED effect, greatly reducing its sensitivity to the undesirable changes.

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