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Quantum Computers & Work Authority

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Lead author Samuele Ferracin aims to incorporate the test into the work of future quantum computer builders by saying, “We have spent the last few years thinking about new methods to check the answers of quantum computers and proposing them to experimentalists. The first methods turned out to be too demanding for the existing quantum computers, which can only implement ‘small’ computations and perform restricted tasks. With our latest work, we have successfully developed a method that suits existing quantum computers and encompasses all their main limitations. We are now collaborating with experimentalists to understand how it performs on a real machine.”

The aforementioned test could aid in the realization of the quantum computer’s ability to be the first to outperform a classical computer and is foreseen to help future quantum computer builders in establishing the usefulness of quantum computing by refining the performance of their machines.

The unusual properties and system behavior of quantum physics in processing information are harnessed by quantum computing as it challenges conventional computers. The behavior of systems in quantum computing, such as simultaneously existing and processing data in multiple different states, lend said computing a huge edge over classical computing as it is being exploited for problems like those found in code-breaking and chemistry.

Providing a means to confirm a quantum computer’s work against the excessive use of resources meant the scientists’ development of a protocol that lets the said computer check its own responses to difficult problems by quantifying the effects of noise on its outputs. Noise in the study is defined as anything beyond a user’s control that has an impact on the quantum computer’s hardware. Examples include temperature fluctuations or defects in the fabrication, which have a bearing on the accuracy of the results.

Two percentages will be produced by the application of the test: the proximity of the quantum computer to the correct result and the user’s confidence in the closeness.

One of the researchers Dr Animesh Datta said: “A quantum computer is only useful if it does two things: first, that it solves a difficult problem; the second, which I think is less appreciated, is that it solves the hard problem correctly. If it solves it incorrectly, we had no way of finding out. So what our paper provides is a way of deciding how close the outcome of a computation is to being correct.”

The challenge of determining the correctness of a quantum computer’s answer to a difficult problem was deemed unfeasible by the researchers as the problems, as mentioned, transcend the scope of an existing classical computer, more so as the system of response-checking typically involves the use of a large number of classical computers to tackle the problem.

An alternative method is then proposed wherein a number of easy calculations – which answers are already known to most – are run by the quantum computer and the accuracy is established based off of the results. Known as the target computation, the researchers can put a statistical boundary on how far the machine can be from the difficult problem’s correct answer. This is a method likened to that used by computer programmers in checking large computer programs wherein small functions with known answers are put in place for the programs to answer correctly; thus, determining the correctness of the program’s entirety.

“The whole point of having a quantum computer is to not spend an exponential amount of time-solving problems, so taking an exponential amount of time to check whether it’s correct or not defeats the point of it. So our method is efficient in that it doesn’t require an exponential amount of resources,” Dr. Datta adds.

“We do not need a classical computer to check our quantum computer. Our method is self-contained within a quantum system that can be used independently of large servers.”

Quantum supremacy is now neared as experimental advances in the form of the largest quantum computers doubling in size twice a year is gaining grounds. Quantum supremacy is defined as a milestone in the development of quantum computers, where a quantum computer first performs a function that a classical computer would gobble a large amount of time for.

Dr. Datta adds, “What we are interested in is designing or identifying ways of using these quantum machines to solve hard problems in physics and chemistry, to design new chemicals and materials, or identify materials with interesting or exotic properties. And that is why we are particularly interested in the correctness of the computation.”

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Top Three Tech Start-Ups To Watch in 2022

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The enterprise tech startup sector is packed with companies capitalizing on growing demand — even amid the disruptions caused by the pandemic — for tools in the world of big data, devops, cloud, mobility, the internet of things and cybersecurity. 

According to Gartner, global IT spending is expected to grow by 6.2% this year, with total spending  projected to hit $3.9 trillion. The unprecedented acceleration of digital transformation in 2020 to satisfy the move to remote work, changes to education and new social norms presented by lockdowns has largely offset the early hit to IT spending caused by the COVID-19 outbreak.

Despite a rocky year, funding hotspots emerged from during the pandemic, with Massachusetts in the US, India, Indonesia, Israel, Australia and New Zealand, France, Belgium, and Brazil all reporting above average levels of funding.

“COVID-19 has shifted many industries’ tech-quilibrium,” said John-David Lovelock, distinguished research vice president at Gartner. “Greater levels of digitalization of internal processes, supply chain, customer and partner interactions, and service delivery is coming in 2021, enabling IT to transition from supporting the business to being the business. The biggest change this year will be how IT is financed, not necessarily how much IT is financed.” 

In this list, we highlight some of the hottest startups building software and services aimed at large enterprise customers, who their customers are, their funding so far and how close they might be to initial public offerings (IPOs) or acquisition in 2022.

  1. Cockroach Labs

Cockroach Labs is a software firm that develops commercial database management systems. Founded in 2015 by three ex-Google employees, it’s best known for CockroachDB, a cloud-native, distributed SQL database that provides “next-level consistency, ultra-resilience, data locality, and massive scale to modern cloud applications.”

Amid the COVID-19 outbreak, Cockroach Labs saw its revenue more than double in 2020, thanks in part to wide-spread cloud adoption. The startup expects to see similar levels of growth this year and claims to be on track to double its workforce from 200 to 400 employees by the end of 2021.

  1. Cohesity

There are a lot of factors that make Cohesity a ‘hot’ enterprise startup: unique technology, a founder on his second act after co-founding the now public software company Nutanix and $250 million in funding from SoftBank’s Vision Fund. 

The startup was originally pitched as a cheaper way for enterprises to store what it calls “secondary data” — backups, files, test/dev and analytics data — all monitored using a single cloud platform. It has since expanded into other areas of enterprise data management, including analytics, security and rapid recovery.

  1. Confluent

Founded by the creators of open-source Apache Kafka, Confluent is a commercial version of the software that helps developers manage system and application messaging at high volume and add real-time streaming data to their apps. 

Kafka has proved popular with companies like LinkedIn, which uses the technology for activity stream data and operational metrics; Netflix for real-time monitoring and its event-processing pipeline; and Spotify, where it’s used as part of the company’s log delivery system. 

The idea behind Confluent is to make it easier for companies that don’t have a surfeit of developer power to harness Kafka.

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A Beginner’s Guide To Flying Your Drone

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You’ve picked up a drone, congratulations! You have taken the first step into a fun new world. A limitless world with new perspectives and freedoms that come with being un-tethered by gravity, free to travel the skies any way that you choose. Drones can be fun to fly as a hobby, or perhaps you want to create inspiring aerial photography. While this can be a little intimidating at first, with a few simple steps you can take to the skies and master your aerial platform in a safe and controlled way. Today we’ll take a look at some of the important steps and elements that come with flying a drone.

How Well Do You Know Your Drone?

Before going airborne, take a few minutes to become familiar with your drone. Learn about the controls, settings, and discover key information about the battery performance. It’s also a good idea to do some research about air traffic and drone rules in your area.

Even if you have never flown a drone before, you can become a master in a short amount of time with some practice. Many drones offer beginner modes and simulators that allow you to get used to the controls and fly in a safe way, without putting your drone or anyone else in harm’s way. Many of the drones in the DJI lineup offer both a simulator that connects the controller to your phone or tablet and a beginner mode that restricts the drone altitude and speed. These two modes provide a great opportunity for novice pilots to build their confidence before embarking on a full-fledged flight.

Drone Controls

Many drones on the market use a standard controller layout, consisting of control sticks and buttons. While the appearance of some controllers can differ in shape and size, the fundamental controls are the same. For the sake of simplicity, today we’ll talk about the modes commonly found on consumer drones like the Mavic, Phantom, and Spark.

Pushing the left joystick up causes the drone to fly up while pushing the joystick down causes the drone to descend. Alternatively, pushing this joystick to the left and right rotates the drone to the left and right, respectively.

The right stick controls the drone’s heading or movement. Pushing the right joystick up, down, left, and right causes the drone to move forward, backward, left, and right, respectively.

You will most likely also have several buttons that allow you to control the camera. These controls can take photos, record video, tilt or pan the camera, as well as give you access to menus. It can help to learn what each button does before flying.

The drone control layout is quite intuitive and easy to operate. Just be sure to remember which side of the drone is the front, so that you can remember which way is forward and backward. For added safety, keep your drone in GPS mode while flying; so that it hovers and maintains its position if the input to the control sticks is ceased.

Pre-Flight Checklist

  • Check the physical condition of the drone. Look for signs of wear, or cracks in the propellers;
  • Check the rules and regulations for the area you plan to fly in;
  • Check that your batteries are charged and have adequate power for flight;
  • Check that your controller and drone are properly connected;
  • Pay attention to the weather conditions;
  • Check that the immediate area around your drone to determine if it’s clear to take off and land;
  • Check your camera settings. Being able to see what your drone sees makes for safer flight;
  • Be sure there’s a memory card in your drone if you plan to take pictures or video;
  • Announce to anyone close to the drone that you are about to take off;
  • Monitor the drone settings as you fly.

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The Seven Best Healthy Lifestyle Apps To Keep You In Tip-Top Shape!

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A healthy lifestyle is about more than just proper nutrition and consistent exercise. Getting enough sleep, taking care of your body and mind, and managing things like medications and doctor’s appointments also play important roles in staying healthy.

A good app can be a great way to manage it all. That’s why Healthline tested a variety of different healthy lifestyle apps. We chose the year’s best based on content, reliability, and user reviews.

  1. HealthTap

Questions about your health? Browse more than 2.6 million answers from doctors and 700,000 topics and articles about 850 conditions. Ask a question for free and get a confidential answer from a doctor within about 24 hours, or pay to see a doctor immediately.

  1. ShopWell: Better Food Choices

Simplify nutrition labels and find foods that suit your healthy diet with ShopWell. Create a food profile with your dietary goals, allergies, health concerns, and dislikes, and get personalized nutrition scores when you scan a label. Other features include food recommendations and location awareness tips to find products in your local grocery store.

  1. Elevate: Brain Training

This brain-training program is designed to improve your focus, speaking abilities, processing speed, memory, math skills, and more. Get a personalized training program that adjusts the more you use it to maximize your results.

  1. Fabulous: Self Care

Build healthy habits with Fabulous so you can enjoy a healthier, happier life. The app takes a holistic approach that motivates you to be more productive. You’ll maximize energy levels, find more focus, lose weight, and sleep better — just follow the app’s prompts.

  1. Health Pal

Health Pal has all the features you’d ever think to need to keep your lifestyle healthy. From a step counter and diet reminders throughout the day to food and exercise trackers, the Health Pal app is a daily companion tool to empower your journey toward a holistically healthy lifestyle. It houses info on your diet, your fitness, and many other health resources in one place.

  1. Remente – Self Improvement

Being healthy is more than just eating right, drinking enough water, and sleeping well — it’s also about getting your mind right. The Remente app gives you many resources to help search your life for happiness and fulfillment, with goal setting, a daily planning tool for day-to-day tasks and longer-term goals, and written and visual features to help you track your feelings in detailed ways that can help you better understand what brings your life purpose.

  1. Health and Nutrition Guide & Fitness Calculators

Trying to actively diet and lose weight can seem like math when you try to break down macros, parse ingredients, or seemingly calculate every calorie. This app helps you understand how the choices you make about your overall diet, rather than fixating on certain nutrients, affect your health and nutritional intake. It provides detailed information about the benefits of many healthy foods for vegetarians and meat eaters. It also lets you calculate your BMI and other body measurements to see how changes in your diet result in either positive or negative health results.

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