#Science Tumblr posts

  • ihavenocream
    17.09.2021 - 3 minutes ago

    Scientists Realize Noiseless Photon-Echo Protocol – Key to Long-Distance Quantum Communication

    Prof. Chuanfeng Li and Prof. Zongquan Zhou from University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS) innovatively raised and realized noiseless photon echo (NLPE) protocol. The research of entire originality reduced the noise by 670 times compared with previous strategies and achieved solid quantum memory with high fidelity. The results were published in Nature Communications.

    First observed by Erwin Hahn in 1950, photon echo is a fundamental physical interaction between light and matter as well as an essential tool for the manipulation of electromagnetic fields. However, the intense spontaneous noise emission generated has the same frequency as the signal, it is impossible to separate them in principle. Previous protocols, such as atomic frequency comb and the revival of silenced echo, failed to eliminate the spontaneous noise emission as much as needed.

    In this study, the researchers implemented NLPE protocol in Eu3+:Y2SiO5 crystal to serve as an optical quantum memory and applied a four-level aromic system to suppress the noise.

    Experimental setup and photon counting histogram. Credit: Image by MA Youzhi et al.

    By double rephasing the pulse in the four-level atomic system, they manipulated the spontaneous noise emission to have a different frequency from the signal. So it is much easier to separate the signal from the noise emission. Though other noises were detected in practical experiment, they were all estimated to be trivial.

    The results of the experiments showed that the noise was 0.0015 photons, 670 times less than previous results. Besides, the efficiency of NLPE was more than three times larger than that of previous protocols.

    Furthermore, its high efficiency, high fidelity, and easy-to-achieve entitle NLPE with magnificent benefits as a noiseless quantum memory protocol.

    All of these advantages bring one closer step to long-distance quantum communication.

    Reference: “Elimination of noise in optically rephased photon echoes” by You-Zhi Ma, Ming Jin, Duo-Lun Chen, Zong-Quan Zhou, Chuan-Feng Li and Guang-Can Guo, 19 July 2021, Nature Communications. DOI: 10.1038/s41467-021-24679-4

    (function(d, s, id){ var js, fjs = d.getElementsByTagName(s)[0]; if (d.getElementById(id)) return; js = d.createElement(s); js.id = id; js.src = "https://connect.facebook.net/en_US/sdk.js#xfbml=1&version=v2.6"; fjs.parentNode.insertBefore(js, fjs); }(document, 'script', 'facebook-jssdk'));

    #science#science blog #health science blog
    View Full
  • shatouto
    17.09.2021 - 17 minutes ago
    #anon#ask #hetalia my BELOATHED #listen i watched hetalia in middle school and have a MA in political science now #y'all better be careful this shit does long lasting damage #/j
    View Full
  • View Full
  • nice-astronomy
    17.09.2021 - 25 minutes ago
    View Full
  • threeravenspublishing
    17.09.2021 - 32 minutes ago

    How about a little reading fix for the weekend? Other Worlds, a hot new Science Fiction poetry collection by Terry Persun is out today!

    How about a little reading fix for the weekend? Other Worlds, a hot new Science Fiction poetry collection by Terry Persun is out today!

    Fall is nearly here and we have an exciting new collection of thought-provoking poetry, perfect for your weekend perusal. So get your blanket and your hot chocolate ready, your reading nook is calling. The future isn’t laid out perfectly. There is no foolproof plan. There are many ways we could turn: clones, space travel, or remaining on earth. Choices, each one a different future for a…

    View On WordPress

    View Full
  • technology-org
    17.09.2021 - 1 hour ago

    New nano particles suppress resistance to cancer immunotherapy

    A specially designed lipid nanoparticle could deliver immune-signaling molecules into liver macrophage cells to overcome resistance to anti-tumor

    #cancer#Cancer Immunotherapy#melanoma#metastasis#nanoparticles#nanotherapy #paper (scientific article) #Featured life sciences news #Health & medicine news #Ideas#Spotlight news #Studies & experiments
    View Full
  • present-future
    17.09.2021 - 35 minutes ago

    Last Day on Mars by Giuseppe Renna

    https://www.artstation.com/artwork/WKOanE

    View Full
  • present-future
    17.09.2021 - 35 minutes ago

    Star base by Nikola Sinitsa

    https://www.artstation.com/artwork/WKAlPQ

    View Full
  • olivrsm
    17.09.2021 - 41 minutes ago
    View Full
  • daysofsilence
    17.09.2021 - 43 minutes ago

    An Elusive 'Missing Link' Mass Black Hole Has Been Caught Devouring a Star

    Gotcha!

    from ScienceAlert - Latest https://ift.tt/3ko7ZaN

    View Full
  • mistyldrost58world
    17.09.2021 - 45 minutes ago
    #BBC News - Science & Environment
    View Full
  • mistyldrost58world
    17.09.2021 - 45 minutes ago
    #BBC News - Science & Environment
    View Full
  • mistyldrost58world
    17.09.2021 - 45 minutes ago
    #BBC News - Science & Environment
    View Full
  • mistyldrost58world
    17.09.2021 - 45 minutes ago
    #BBC News - Science & Environment
    View Full
  • achreceptorsblog
    17.09.2021 - 1 hour ago

    sometimes

    I think where I am

    Is this where I want to be

    Or is it just the end the end the deepest well I fell in where what I have doesn't matter how

    View Full
  • ajrvanderleij
    17.09.2021 - 1 hour ago

    Index, a history of the: Exploring the rivalries in how we search

    Index, A history of the by Dennis Duncan will take you from 13th-century cloisters to Silicon Valley in its exploration of how we search for information from New Scientist - Home https://ift.tt/2VMmziz

    View Full
  • thefolxawakens
    17.09.2021 - 1 hour ago
    #id unorinically love to cook meth i love science #answered
    View Full
  • shytriumphdelusion
    17.09.2021 - 1 hour ago

    Bangalore is a Silicon Valley of India, it has large number of IT companies spread across Bangalore, you should not have any doubt on shortage of Data Science jobs in Bangalore. IT technologies is growing and there a huge demand for Data Science engineers. Data Science has more than 70% of the markets share in terms of providing services.

    View Full
  • brxsm
    17.09.2021 - 1 hour ago

    My uni library book got delivered to my evil man neighbour who opened the package probably for evil reasons but joke’s on him because he came crawling over here, package in hand, all “I opened it by accident!” after he saw that it’s just a musty old textbook on ‘discrete mathematical structures for computer science’

    #(i'm not doing comp science but it's nonetheless a useful maths book!) #also i feel comfortable assuming he's evil bc 1. man and 2. i've heard him yelling at his wife and kids #...who now mysteriously don't seem to live there anymore. #just some neighbourhood watch goss for you girls
    View Full