Ultrafast Optical Switch Based on the Quantum Coherence Swapping

2001 ◽  
Author(s):  
B. S. Ham
Keyword(s):  
Quantum Coherence ◽  
Optical Switch ◽  
Ultrafast Optical

scholarly journals A Solution-Processed Ultrafast Optical Switch Based on a Nanostructured Epsilon-Near-Zero Medium

2017 ◽  
Vol 29 (27) ◽  
pp. 1700754 ◽  
Author(s):  
Qiangbing Guo ◽  
Yudong Cui ◽  
Yunhua Yao ◽  
Yuting Ye ◽  
Yue Yang ◽  
...  
Keyword(s):  
Optical Switch ◽  
Solution Processed ◽  
Ultrafast Optical ◽  
Epsilon Near Zero

Ultrafast optical switch evaluation facility

1993 ◽  
Author(s):  
Joseph M. Osman ◽  
Joseph Chaiken ◽  
Brian DeVaul
Keyword(s):  
Optical Switch ◽  
Ultrafast Optical

scholarly journals InAs-Nanowire-Based Broadband Ultrafast Optical Switch

2019 ◽  
Vol 10 (15) ◽  
pp. 4429-4436 ◽  
Author(s):  
Junting Liu ◽  
Vladislav Khayrudinov ◽  
He Yang ◽  
Yue Sun ◽  
Boris Matveev ◽  
...  
Keyword(s):  
Optical Switch ◽  
Ultrafast Optical

Gigahertz Harmonic Mode‐Locked Fiber Laser Based on Tunable SMS Ultrafast Optical Switch

2020 ◽  
Vol 532 (5) ◽  
pp. 2000018
Author(s):  
Tiebin Wang ◽  
Liang Jin ◽  
Hongwei Zhang ◽  
Wei Pan ◽  
He Zhang ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Optical Switch ◽  
Harmonic Mode ◽  
Ultrafast Optical

scholarly journals Nature does not rely on long-lived electronic quantum coherence for photosynthetic energy transfer

2017 ◽  
Vol 114 (32) ◽  
pp. 8493-8498 ◽  
Author(s):  
Hong-Guang Duan ◽  
Valentyn I. Prokhorenko ◽  
Richard J. Cogdell ◽  
Khuram Ashraf ◽  
Amy L. Stevens ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Quantum Coherence ◽  
Light Harvesting ◽  
Electronic Excitation Energy ◽  
Light Harvesting Complexes ◽  
Ultrafast Optical ◽  
Ultrafast Optical Spectroscopy ◽  
Biomolecular Complexes ◽  
Orthodox View

During the first steps of photosynthesis, the energy of impinging solar photons is transformed into electronic excitation energy of the light-harvesting biomolecular complexes. The subsequent energy transfer to the reaction center is commonly rationalized in terms of excitons moving on a grid of biomolecular chromophores on typical timescales <100 fs. Today’s understanding of the energy transfer includes the fact that the excitons are delocalized over a few neighboring sites, but the role of quantum coherence is considered as irrelevant for the transfer dynamics because it typically decays within a few tens of femtoseconds. This orthodox picture of incoherent energy transfer between clusters of a few pigments sharing delocalized excitons has been challenged by ultrafast optical spectroscopy experiments with the Fenna–Matthews–Olson protein, in which interference oscillatory signals up to 1.5 ps were reported and interpreted as direct evidence of exceptionally long-lived electronic quantum coherence. Here, we show that the optical 2D photon echo spectra of this complex at ambient temperature in aqueous solution do not provide evidence of any long-lived electronic quantum coherence, but confirm the orthodox view of rapidly decaying electronic quantum coherence on a timescale of 60 fs. Our results can be considered as generic and give no hint that electronic quantum coherence plays any biofunctional role in real photoactive biomolecular complexes. Because in this structurally well-defined protein the distances between bacteriochlorophylls are comparable to those of other light-harvesting complexes, we anticipate that this finding is general and directly applies to even larger photoactive biomolecular complexes.

Ultrafast optical switching based on mutually enhanced resonance modes in gold nanowire gratings

Nanoscale ◽  
2019 ◽  
Vol 11 (38) ◽  
pp. 17807-17814 ◽  
Author(s):  
Yan Wang ◽  
Xinping Zhang
Keyword(s):  
Optical Switching ◽  
Modulation Depth ◽  
Optical Switch ◽  
Gold Nanowires ◽  
Gold Nanowire ◽  
Ultrafast Optical ◽  
Resonance Modes ◽  
Thick Gold

An optical switch as fast as 290 fs using thick gold nanowires to achieve a modulation depth of >16%.

scholarly journals Self-supported ultrathin plasmonic film for ultrafast optical switching

2022 ◽  
Author(s):  
Jinghui Yang ◽  
Yulan Fu ◽  
Xinping Zhang
Keyword(s):  
Optical Switching ◽  
Optical Switch ◽  
Solution Processing ◽  
Gold Nanowire ◽  
Ultrafast Optical

Self-supporting gold nanowire (AuNW) gratings with a thickness of about 200 nm are produced by solution-processing and flexible-transfer techniques. Such an ultrathin structure is applied as an ultrafast optical switch...

Sign in / Sign up

Export Citation Format

Share Document