In quantum technologies, the important point is to be able to transmit the information-carrying quantum bits (qubits) from the transmitter to the receiver without loss or damage. This is one of the main purposes. For this, physicists are developing quantum memories that allow us to store information-loaded photons for certain periods of time to be transmitted at any time. Quantum memories are essential components for applications such as quantum information processing, quantum networks, and quantum repeaters. There are quantum devices developed by various methods in order not to lose photons or disrupt their function during the storage process of qubits. In today's article, I will talk about an alternative approach besides the material quantum memories produced. Scientists from the University of Illinois Urbana-Champaign, Truman State University, and RightHand Robotics, Inc. have succeeded in producing a quantum memory in free space. Before describing quantum memorie...
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