How Do I Become a Quantum Physicist?

Quantum theory is one of the two cornerstones of modern physics. Quantum theory provides new ways to observe, think and express about nature. Quantum theory reveals the basic laws of the microscopic material world, laying a theoretical foundation for atomic physics, solid state physics, nuclear physics, particle physics, and modern information technology. It can well explain the atomic structure, the regularity of the atomic spectrum, the properties of chemical elements, the absorption and radiation of light, the infinite separability of particles, and the carrying of information. In particular, its openness and uncertainty have inspired human beings to discover and create more.

Everyone is familiar with light having wave-particle duality, and they also know that the interference experiment of light double slits proves the property of the existence of light waves. The experimental result is that after the light passes through the double slits, interference occurs on the back screen. stripe.

The creation of quantum theory is a magnificent epic.

Quantum communication refers to a new type of communication method that uses the quantum entanglement effect to transfer information. It is a new type of interdisciplinary developed in the past three decades and is a new research area combining quantum theory and information theory. Quantum communication has attracted widespread attention due to its efficient and secure information transmission, and has therefore become an international research hotspot in quantum physics and information science. Recently, this discipline has gradually moved from theory to experiment, and has developed towards practicality.

The process of using quantum theory to realize optical quantum communication is as follows: First, first construct a pair of entangled particles, place the two particles separately at the place of communication, and then jointly measure the particles with unknown quantum states and the particles of the sender (1 Operations), then the receiver's particles will collapse (change) in an instant, and collapse (change to a certain state, but this state is symmetrical with the state of the sender's particles after collapse (change), and then jointly measure the The information is transmitted to the receiver through the classic channel, and the receiver performs unitary transformation (equivalent to the inverse transformation) on the collapsed particles according to the received information, and the unknown quantum state exactly the same as the sender can be obtained. Quantum communication is the use of quantum entanglement. Effect is a new type of communication method for information transmission. In popular terms, two strangers who are far apart can think about doing the same thing, as if there is an invisible line holding them. Called "psychopathic." Quantum teleportation not only recognizes and reveals to people in physics. Mysterious laws of the natural world is important, and a quantum state as an information carrier can be done in large-capacity information ultrafast transmission by transmitting quantum states. ^[4]

Because quantum communication is of strategic importance to national information and national defense security, major developed countries in the world such as the United States, the European Union, and Japan are developing vigorously. It may change the pattern of the future development of the information industry, especially in military applications. Aspects of quantum communication have unparalleled broad prospects. A quantum stealth communication system has been constructed between various reconnaissance and early warning systems, various combat command and control systems and major combat platforms, as well as among quantum microspace weapon systems, and a quantum information-based communication network has been established. Quantum communication will play a vital role in the future information war with its characteristics of extremely large channel capacity and ultra-high communication rate. Because of this, the US Department of Defense has listed "quantum information and control technology" as one of the six major disruptive research areas to focus on in the future. China is a latecomer in the international competition of quantum communication, but it has a high starting point and rapid progress. It has reached the world advanced level in many aspects of application fields, especially in the key technologies of urban quantum communication, and even reached industrialization requirements. .