scispace - formally typeset
Search or ask a question
Topic

Optical microcavity

About: Optical microcavity is a research topic. Over the lifetime, 2599 publications have been published within this topic receiving 72125 citations. The topic is also known as: optical microcavities.


Papers
More filters
Journal ArticleDOI
TL;DR: In this paper, a high-speed all-optical temporal differentiator based on a compact silicon microring resonator with a radius of 20µm is demonstrated, and 80 Gbit/s signal differentiation is experimentally realized.
Abstract: A high-speed all-optical temporal differentiator based on a compact silicon microring resonator with a radius of 20 µm is demonstrated. 80 Gbit/s signal differentiation is experimentally realised.

15 citations

Journal ArticleDOI
TL;DR: By considering driven diffusive dynamics of exciton polaritons in an optical microcavity with an embedded molybdenum disulfide (MoS2) monolayer, the authors determined an experimentally relevant range of parameters at which room-temperature superfluidity can be observed.
Abstract: By considering driven diffusive dynamics of exciton polaritons in an optical microcavity with an embedded molybdenum disulfide (MoS2) monolayer, we determine an experimentally relevant range of parameters at which room-temperature superfluidity can be observed. It is shown that the superfluid transitions occur in a trapped polariton gas at a laser pumping power of P>600 mW and a trapping potential strength of k>50 eV/cm2. We also propose a simple analytic model that provides a useful estimate for the polariton gas density, which enables one to determine the conditions for the observation of room-temperature polariton superfluidity.

15 citations

Journal ArticleDOI
TL;DR: In this paper, the authors investigated the use of single self-assembled InAs/GaAs quantum dots as such single-photon sources, and have seen a tenfold reduction in the probability of multiplephoton probability as compared to Poissonian pulses.
Abstract: Current quantum cryptography systems are limited by the attenuated coherent pulses they use as light sources: a security loophole is opened up by the possibility of multiple-photon pulses. By replacing the source with a single-photon emitter, transmission rates of secure information can be improved. We have investigated the use of single self-assembled InAs/GaAs quantum dots as such single-photon sources, and have seen a tenfold reduction in the multi-photon probability as compared to Poissonian pulses. An extension of our experiment should also allow for the generation of triggered, polarization-entangled photon pairs. The utility of these light sources is currently limited by the low efficiency with which photons are collected. However, by fabricating an optical microcavity containing a single quantum dot, the spontaneous emission rate into a single mode can be enhanced. Using this method, we have seen 78% coupling of single-dot radiation into a single cavity resonance. The enhanced spontaneous decay should also allow for higher photon pulse rates, up to about 3 GHz.

15 citations

Journal ArticleDOI
TL;DR: Tunable time delay and advance is demonstrated using a silicon feedback-microring resonator integrated with p-i-n diodes and a large dynamic time tuning range upon dc bias voltage change is obtained.
Abstract: We report the demonstration of electro-optical tunable time delay and advance using a silicon feedback-microring resonator integrated with p-i-n diodes. By controlling the feedback and round-trip phase shifts through the carrier-injection-based free-carrier dispersion effect, we obtain a large dynamic time tuning range (−88 ps to 110 ps) upon dc bias voltage change in the range of few tens of millivolts at a given resonance wavelength. We also demonstrate tunable time delay and advance at different resonance wavelengths within 0.76 nm wavelength range.

15 citations

Journal ArticleDOI
TL;DR: The theory of third-order spontaneous parametric down-conversion (TOSPDC) in a ring waveguide microcavity is developed in this article, and analytical expressions for the rate of photon triplet emission are presented for both the monochromatic-pump and pulsed pump regimes.
Abstract: The theory of third-order spontaneous parametric down-conversion (TOSPDC) in a ring waveguide microcavity is developed. Analytical expressions for the rate of photon triplet emission are presented for both the monochromatic-pump and pulsed-pump regimes. In the latter case, rising exponential pulses are considered as optimal ones for the cavity excitation. It is demonstrated by numerical simulations that a silicon-nitride based ring microcavity can be a promising system for developing narrowband sources of photon triplets based on TOSPDC.

15 citations


Network Information
Related Topics (5)
Quantum dot
76.7K papers, 1.9M citations
87% related
Optical fiber
167K papers, 1.8M citations
86% related
Laser
353.1K papers, 4.3M citations
86% related
Band gap
86.8K papers, 2.2M citations
84% related
Nanowire
52K papers, 1.5M citations
84% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202317
202220
202152
202063
201990
201846