May 20th, 2024
By Anne Manning, Harvard Staff Writer
Published in the Harvard Gazette
An up close photo of the diamond silicon vacancy center.
It’s one thing to dream up a next-generation quantum internet capable of sending highly complex, hacker-proof information around the world at ultra-fast speeds. It’s quite another to physically show it’s possible.
That’s exactly what Harvard physicists have done, using existing Boston-area telecommunication fiber, in a demonstration of the world’s longest fiber distance between two quantum memory nodes. Think of it as a simple, closed internet carrying a signal encoded not by classical bits like the existing internet, but by perfectly secure, individual particles of light.
The groundbreaking work, published in Nature, was led by Mikhail Lukin, the Joshua and Beth Friedman University Professor in the Department of Physics, in collaboration with Harvard
Seeing the dreaded Windows 10 or Windows 11 internet connection icon proclaiming that you have No Internet Access? We’ll show you the steps to follow when you have no internet access but are still connected to Wi-Fi in Windows.
Before we proceed, we should explain what’s happening on your network when you’re connected to Wi-Fi but have no internet. This requires knowledge of some home networking basics.
Wireless devices, like a laptop, connect to your router. The router is a device that manages the network connections for the devices in your home. Your router plugs into a modem, a device that bridges the traffic on your home network to the wider internet.
When you see error messages like Connected, no internet access or Connected but no internet on your computer, it means that your computer is connected to the
The Internet Computer blockchain incorporates a radical rethink of blockchain design, powered by innovations in cryptography. It provides the first “World Computer” blockchain that can be used to build almost any Web 2.0 online system or service, and web3 services, including web3 social media services, without any need for centralized traditional IT such as cloud computing services. It also enables smart contracts it hosts to directly create transactions on other blockchains, which in turn enables the full end-to-end decentralization of online services and web3 for the first time.
The project was founded in October 2016 by Dominic Willams and has raised a total of $121 million from investors such as Adreessen Horowitz, Polychain Capital, Multicoin Capital and such. On May 10, 2021, DFINITY launched the Internet Computer into the public domain, marking it a major milestone for ICP
An open internet is a cornerstone of civil society, underpinning access to information in peacetime but even more so in times of conflict and under repressive regimes, according to leading experts.
Following Russia’s full-scale invasion of Ukraine in early 2022, over 50 digital and human rights groups including Access Now, the Committee to Protect Journalists, and Human Rights Watch jointly explained in a letter to the US Government that restrictions on the internet to Russia or Belarus could “hurt individuals attempting to organise in opposition to the war, report openly and honestly on events in Russia, and access information about what is happening in Ukraine and abroad,” adding such measures could “also unnecessarily facilitate further repression by the Russian government.”
This is why telecommunications services are often treated differently than other sectors of the economy when it comes to global sanctions, and why the United States made internet services exempt
Do you know how fast your internet speed is right now? If the answer is no, there’s a simple way to change that in the next 5 minutes. A quick internet speed test will tell you exactly how fast your connection is and how it compares to your internet service provider’s advertised speeds.
There are many speed tests out there that can do this simple job, so which one should you trust?
Using a good speed test, such as Ookla’s, CNET’s pick for the best speed test overall, will help you determine what speeds you’re getting at your address. You might be surprised to find they’re lower than the advertised speeds from your provider.
To help you decide
In our digitally interconnected world, the inner workings of networks, along with the technologies that underpin them, are integral to our daily lives. This comprehensive guide delves deep into the intricate world of networks, the critical role of optical fibers, the pervasive use of wireless technology, and the magic of Wi-Fi that connects us to the digital realm.
Section 1: How Networks Work
1.1 Unveiling Network Topology
Unveiling network topology is the process of identifying and mapping the structure of a computer network. This involves discovering devices, connections, and their relationships, which helps network administrators with troubleshooting, optimization, and security. The process includes device identification, connection mapping, and presenting the network’s layout in a visual format for easy management.
1.2 Protocols: The Universal Language of Networking
Protocols are like the universal language of networking. They’re sets of rules and conventions that dictate how devices communicate and exchange data in a
