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Heat-free optical switch would enable optical quantum computing chips


Credit: Lucas Schweickert
In a potential boost for quantum computing and communication, a European research collaboration reported a new method of controlling and manipulating single photons without generating heat. The solution makes it possible to integrate optical switches and single-photon detectors in a single chip.
Publishing in
Nature Communications, the team reported to have developed an optical switch that is reconfigured with microscopic mechanical movement rather than heat, making the switch compatible with heat-sensitive single-photon detectors.
Optical switches in use today work by locally heating light guides inside a semiconductor chip. This approach does not work for quantum optics, says co-author Samuel Gyger, a PhD student at KTH Royal Institute of Technology in Stockholm. ....

Nordrhein Westfalen , Upper Austria , Samuel Gyger , Errando Herranz , Carlos Errando Herranz , European Union Horizon , Linz Institute Of Technology , Alice Wallenberg Foundation , Massachusetts Institute Of Technology , Austrian Science Fund , Johannes Kepler University , Swedish Research Council , Publishing In Nature Communications , Royal Institute Of Technology , Paderborn University , Nature Communications , European Quantum Flagship , European Union , Austrian Science , Professor Val Zwiller , Professor Klaus , Massachusetts Institute , Linz Institute , Technology Engineering Computer Science , Computer Science , System Security Hackers ,

'Target identified': teaching a machine how to identify imperfections in 2D materials


Credit: FLEET
Just as James Cameron s Terminator-800 was able to discriminate between clothes, boots, and a motorcycle , machine-learning could identify different areas of interest on 2D materials.
The simple, automated optical identification of fundamentally different physical areas on these materials (eg, areas displaying doping, strain, and electronic disorder) could significantly accelerate the science of atomically-thin materials.
Atomically-thin (or 2D) layers of matter are a new, emerging class of materials that will serve as the basis for next-generation energy-efficient computing, optoelectronics and future smart-phones.
Without any supervision, machine-learning algorithms were able to discriminate between differently perturbed areas on a 2D semiconducting material, explains lead author Dr Pavel Kolesnichenko. This can lead to fast, machine-aided characterization of 2D materials in the future, accelerating application of these materials in next-generat ....

Pavel Kolesnichenko , Energy Electronics Technologies , Centre Of Excellence , Lund University , Prof Michael Fuhrer Monash University , Prof Jeffrey Davis Swinburne University Of Technology , James Cameron , Prof Jeffrey Davis , Swinburne University , Prof Davis , Future Low Energy Electronics Technologies , Prof Michael Fuhrer , Monash University , Chemistry Physics Materials Sciences , Superconductors Semiconductors , Electrical Engineering Electronics , Nanotechnology Micromachines , ஆற்றல் மின்னணுவியல் தொழில்நுட்பங்கள் , மையம் ஆஃப் சிறப்பானது , லண்ட் பல்கலைக்கழகம் , ப்ரொஃப் மைக்கேல் ஃபுரர் மோனாஷ் பல்கலைக்கழகம் , ப்ரொஃப் ஜெஃப்ரி டேவிஸ் ஸ்வின்பர்ன் பல்கலைக்கழகம் ஆஃப் தொழில்நுட்பம் , ஜேம்ஸ் கேமரூன் , ப்ரொஃப் ஜெஃப்ரி டேவிஸ் , ஸ்வின்பர்ன் பல்கலைக்கழகம் , ப்ரொஃப் டேவிஸ் ,

Rana Sugars Ltd leads gainers in 'B' group


Kirloskar Brothers Ltd, Mahanagar Telephone Nigam Ltd, Shree Rama Multi-Tech Ltd and Alok Industries Ltd are among the other gainers in the BSE s B group today, 03 March 2021.
Kirloskar Brothers Ltd, Mahanagar Telephone Nigam Ltd, Shree Rama Multi-Tech Ltd and Alok Industries Ltd are among the other gainers in the BSE s B group today, 03 March 2021.
Rana Sugars Ltd surged 20.00% to Rs 9.12 at 12:03 IST. The stock was the biggest gainer in the BSE s B group. On the BSE, 23.75 lakh shares were traded on the counter so far as against the average daily volumes of 82963 shares in the past one month.
Kirloskar Brothers Ltd spiked 18.80% to Rs 196.5. The stock was the second biggest gainer in B group. On the BSE, 2.16 lakh shares were traded on the counter so far as against the average daily volumes of 20023 shares in the past one month. ....

Rana Sugars Ltd , Mahanagar Telephone Nigam Ltd , Tech Ltd , Kirloskar Brothers Ltd , Alok Industries Ltd , Shree Rama Multi Tech Ltd , Sugars Ltd , Telephone Nigam Ltd , Rama Multi Tech Ltd , Industries Ltd , Capital Market , Mahanagar Telephone Nigam Limited , Economy Of India , Marathi People , Kirloskar Group , Sanjay Kirloskar , Pump Amp Pumping Equipment , Textiles Amp Leather Goods Nec , Plastic Containers Amp Packaging , Wired Telecommunications , ராணா சர்க்கரைகள் லிமிடெட் , மகாநகர் தொலைபேசி நீகம் லிமிடெட் , தொழில்நுட்பம் லிமிடெட் , கிர்லோஸ்கர் சகோதரர்கள் லிமிடெட் , அலோக் தொழில்கள் லிமிடெட் , ஸ்ரீ ராமா பல தொழில்நுட்பம் லிமிடெட் ,

The People's Republic of Rumor


 at the 
A group of people the other day were at the large shopping mall at a place called Shuangjing, just inside Beijing’s Third Ring Road, looking at their cell phones and comparing notes. “Don’t go to Sina Weibo it’s too famous,” one person advised, referring to the largest of China’s electronic bulletin boards. “Go to Wangyi. It’s not so well known so it doesn’t get blocked so quickly.”
The people were all scanning websites for news about the torrential rain that fell last week in Beijing and surrounding Hebei Province. The official media have reported that seventy-seven people died as a result of the storm, including a policeman killed while trying to rescue some people trapped in their car in a flooded underpass. But the Chinese blogosphere tells a different story: of hundreds and possibly thousands of deaths, and widespread damage and chaos. Apart from describing the flood itself, these reports suggest that, once again, Chinese officials were ....

Sina Weibo , Chinese Central Television , Propaganda Department , People Liberation Army , Third Ring Road , Hebei Province , Chinese Central , Guangqu Road , Liberation Army , Natural Disasters , Mobile Phones , Information Age , சீன மைய தொலைக்காட்சி , ப்ரொபக்யாஂட துறை , மக்கள் விடுதலை இராணுவம் , மூன்றாவது மோதிரம் சாலை , சீன மைய , விடுதலை இராணுவம் , இயற்கை பேரழிவுகள் , கைபேசி தொலைபேசிகள் , தகவல் வாழ்நாள் ,