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The world’s first quantum ＂compass＂ has come out, and future navigation is expected to rely on no satellites

　　Science and Technology Daily, Beijing, November 12 (Reporter **) According to the official website of the British Imperial College of Technology, researchers at the school and M Squared have joined hands to develop the world’s first quantum accelerometer for navigation. This quantum "compass" is an anti-interference navigation device that does not rely on global positioning satellites (GPS) and can determine the exact location of any place on earth.

　　While most navigation today relies on global satellite positioning systems, including GPS, that send and receive signals from satellites orbiting the Earth, the new quantum accelerometer is a stand-alone system that does not rely on any external signals. This is especially important because satellite signals can be blocked, intercepted, or even sabotaged or attacked, making accurate navigation impossible.

　　Accelerometers measure changes in the speed of an object over time, and use this change and the object’s starting point to calculate the object’s new location. While accelerometers are found in devices such as mobile phones and laptops, they must be recalibrated frequently and, for navigation, can only work continuously for a few hours at a time.

　　The team demonstrated the mobile, commercially available quantum accelerometer at the UK’s National Quantum Technology Showcase. It works by measuring the movements of ultracold atoms at extremely low temperatures, close to absolute zero, where they behave in "quantum" ways, like matter and waves. "When atoms are ultracold, we have to use quantum mechanics to describe how they move, which allows us to build devices such as atomic interferometers," said Dr. Joseph Cote, of Imperial College’s Cold Matter Centre.

　　To make atoms cold enough to detect their properties, powerful lasers that can be precisely controlled are needed. M Squared has spent three years developing a universal laser system for cold atom sensors that features high power, low noise and frequency tunability to cool atoms and provide an optical scale for acceleration measurements.

　　The researchers point out that the new quantum "compass" is designed to navigate large vehicles, ships, etc., but it can also be used for basic scientific research such as finding dark energy and attractive force waves.

　　In 2013, quantum research was identified as a priority area by the UK government, with a focus on military technology. Since then, through the UK National Quantum Technology Programme, the UK government has invested ￡270 million in the field over five years.

　　Editor-in-Chief Circle

　　Quantum physics has overturned all kinds of common sense in the macroscopic world, and particles with wave-particle duality seem so erratic and mysterious. In fact, many technologies are based on quantum physics, but ordinary people are ignorant. Now, quantum accelerometers based on quantum physics have come out, which do not rely on GPS, and can achieve precise positioning and precise navigation on their own. More than 100 years after the advent of quantum physics, various applications based on quantum technology are also coming to people. Using quantum properties, we may be able to modify and upgrade more devices that are currently widely used, making them simpler and more accurate. Has the era of commercial application of quantum technology begun?

The original innovative spy war drama will be broadcast, and the starring lineup is good, which is expected to reproduce the viewing frenzy.

Original title: A new spy war drama will be broadcast, with a good starring lineup, which is expected to reproduce the viewing frenzy.

The material of this article comes from the internet. If it is inconsistent with the actual situation or there is infringement, please contact and delete it.

With the passage of time, the themes of domestic dramas are increasingly diversified, covering various types such as sweet pets, suspense, criminal investigation, spy war and so on, and spy war dramas have always been one of the hot topics that attract the attention of the audience. A series of classic works, such as Cliff, Assassination, Latency, etc., have long been deeply rooted in people’s hearts.

In recent years, spy war dramas have become more popular. This kind of works attracts a large number of audiences’ attention with gripping plots, colorful fighting scenes and intricate character connections. Especially in the last two years, masterpieces such as "Rebel" and "Opponent" have been warmly praised by the audience.

It is reported that the upcoming new spy war drama "Long River Sunset" has attracted much attention, because it not only has a strong cast, but also is a big production co-produced by China and the United States, which makes people look forward to it. The play is adapted from real history and mainly tells the true story that happened during World War II. In order to present the real history and war scenes, the crew even went to all parts of the world to take pictures, presenting a shocking scene and presenting a vivid historical picture for the audience, which is expected.

In addition, the cast is also remarkable. Not only powerful actors such as Edward Zhang, Zhang Songwen, Zhang Junning, but also veteran actors such as Zhang Chenguang and Jin Shijie joined in, which is enough to attract the attention of the audience. This spy war drama can actually be regarded as a dark horse, because it not only has a strong cast, but also has a real and shocking plot.

Edward Zhang has always been the representative of the opera idiot, and he is adept at playing between the positive and negative roles. His representative works, such as Red and Battle of Dawn, are amazing every time. Especially in Red, his superb performance is impressive. Previously, he also appeared in spy war dramas for many times, such as "The Forerunner" and "Patriot", which won unanimous praise from the audience. Therefore, his outstanding performance in Long River Sunset is highly anticipated.

Although Zhang Junning’s experience in spy drama is not as rich as Edward Zhang’s, she won the audience’s love with her excellent acting skills and unique temperament. Her outstanding performances in The Most Beautiful Time, The Legend of Wu Mei Niang, never say goodbye and other plays are deeply rooted in the hearts of the people. In "Long River Sunset", she will play a smart and knowledgeable war doctor, adding more points to the dramatic increase.

Zhang Songwen is also a powerful actor, who has appeared in many popular dramas, such as Hidden Corner, Meritorious Service, Heart Residence and so on. His upcoming The Knockout is highly anticipated, and we expect him to bring a surprising performance in Sunset over a Long River.

In addition, the joining of Zhang Chenguang and Jin Shijie, the old players, also adds a lot of color to the drama. Zhang Chenguang has always been famous for playing the role of "father", but his performance is still loved by the audience. Jin Shijie is famous for his superb acting skills and changeable role images, such as "Yuwenxi" in The Biography of Chu Qiao and "Jiang Rongshou" in "The Hairs Are Not Begonia Red", which are impressive.

We are all full of expectations for "Long River Sunset". This drama will not only be a visual feast, but also a historical event and reflection. I hope the audience can discuss together and share their views and expectations on the play. After all, it is the enthusiastic support of the audience that makes domestic dramas create new glories.

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Financial support for science and technology, the real economy, just give money？ It’s not that simple.

On September 22nd, at the 5th Bund Financial Summit in 2023, discussions on how finance can support science and technology innovation and support the real economy kept coming.

Experts pointed out that the biggest problem for scientific and technological innovation is how to deal with the risks and uncertainties faced by innovation and how to cross the "valley of death"; Risk pricing and risk allocation are the most basic and important functions for the financial system. It is these that make finance and technological innovation have a natural connection, and also provide a perfect reason for finance to support technological innovation.

However, "the lack of risk identification ability, the dysfunction of risk pricing and risk allocation are precisely the Achilles heel of China’s financial system, which has also become the fundamental reason for the lack of financial support for scientific and technological innovation." Zhang Xiaojing, director of the Institute of Finance of China Academy of Social Sciences and director of the National Finance and Development Laboratory, said that the "structural advantages" of state-owned enterprises, the development responsibility and soft budget constraints of local governments, the institutional preference of financial institutions and the central government’s last resort have led to the irrationality of risk pricing and allocation of financial resources. However, he also stressed that the government should not play a role in supporting innovation and economic and social development, but "on the premise that the market plays a decisive role".

In addition to the weakness of the financial market, "ideological enlightenment" is also a key word. "Financial support for science and technology innovation needs an’ ideological enlightenment’." Traditional thinking is that "present" is the cumulative result of all "past"; What financial thinking values is the capitalization of "present" and "future". The value of capital depends on the expectation of the future, not the past, which is a real revolution and ideological enlightenment in epistemology. It is for this reason that the theoretical basis of financial support for science and technology innovation is that the current financial support for science and technology innovation should depend on the expectation of future scientific and technological innovation achievements.

This requires better tolerance. "Subversive innovation will have its own peers? Will there be a historical reference? None. " Zhang Xiaojing believes that it is necessary to enhance the inclusiveness of science and technology evaluation standards. At the same time, at the micro level, investment failure should be allowed, and state-owned enterprises should establish a fault-tolerant mechanism; To tolerate fluctuations and bubbles at the macro level, keeping the bottom line of risk does not mean zero tolerance for financial risks. The function of finance is realized in fluctuation, just as the function of price mechanism is that price is realized around value fluctuation, which means that supervision should be inclusive.

According to Xu Ming, a professor at the School of International Finance and Law, East China University of Political Science and Law, technology and capital are two wings of the real economy, while technological innovation and capital market innovation are two engines. He believes that capital market innovation can further stimulate the basic functions of the capital market, thus better serving the real economy.

How to innovate capital market? Xu Ming believes that from the perspective of financiers, it is necessary to further expand the proportion of direct financing. At the same time, the registration system should take the road of marketization. The marketization construction of capital market needs to handle "four relations" well.　

The first is the relationship between the government and the market. "This market should be: clear expectations and trust-based. Capital market is expected market, information market and capital market. Among them, expectations and information are prerequisites. Without information and expectations, capital cannot enter the capital market. " In Xu Ming’s view, the marketization of the registration system should first be expected clearly. On the one hand, it is necessary to maintain the scientific, reasonable and normal IPO issuance, on the other hand, it is fair and transparent in information disclosure.

The second is the relationship between the government and enterprises. To give the option to the market, the listing and pricing should be decided by the market.

The third is the relationship between the government and investors. In the process of IPO, information disclosure should be oriented to the needs of investors.

In addition, the relationship between the government and the intermediary agencies is to clarify the responsibilities and return to their duties. "The government can’t make decisions instead of intermediaries. The responsibility of the intermediary itself is fidelity. "

Editor-in-Chief: Zaifei

Author: Liu Huiyu

Source of the title map: upper view of the title map

Photo editor: Shao Jing

Central Meteorological Observatory： The blue warning of rainstorm and sandstorm goes online and the rainfall in the south enters the strongest period.

Cctv newsAccording to the Central Meteorological Observatory, at present, due to the influence of cold air, many places in northern China are experiencing strong winds, cooling and dusty weather. At the same time, cold air collides with warm and humid air, and there will be heavy rainfall in Hunan, Jiangxi, Zhejiang and Guangxi today. The Central Meteorological Observatory issued a blue warning of rainstorm and sandstorm this morning.

The Central Meteorological Observatory issued a blue rainstorm warning this morning.It is estimated that there will be heavy rain in parts of southeastern Guizhou, south-central Hunan, most of Jiangxi, western Zhejiang, northwestern Fujian and northwestern Guangxi from day to night, among which there will be heavy rain (100 ~ 120 mm) in parts of northeastern Guangxi. Some of the above areas are accompanied by short-term heavy rainfall (the maximum hourly rainfall is 20 ~ 50 mm, and the local area can exceed 60 mm), and there are strong convective weather such as thunderstorms and strong winds. Tomorrow, the rainfall in the south will obviously weaken, and there will be moderate to heavy rain and local heavy rain in parts of Guangdong and Guangxi.

The Central Meteorological Observatory continued to issue a blue warning of sandstorms this morning.Affected by cold air and strong winds, there are sand-blowing or dusty weather in parts of southern Xinjiang, central and western Inner Mongolia, northern and eastern Gansu, Ningxia, Shaanxi, northern Sichuan Basin, Shanxi, western Hebei, Henan, central and western Shandong, Hubei, northern Hunan, northern Anhui and northwestern Jiangsu from day to night, among which there are sandstorms in parts of southwestern Inner Mongolia, northeastern Gansu, central and northern Ningxia and northwestern Shaanxi. Tomorrow, the dusty weather in the above areas will gradually weaken.

The May Day holiday will be officially opened tomorrow, and it is expected that the weather in China will be more complicated in the middle and late period of the holiday. From the 1st to the 3rd, there will be a strong rainfall process accompanied by strong convective weather in the south. Affected by frequent cold air activities since the 2nd, the temperature in most areas north of Huanghuai dropped significantly, with precipitation in many places. Please pay attention to the latest forecast and early warning information, arrange the travel time reasonably, and avoid delaying the trip due to weather.