The popular children's game of telephone is based on a simple premise: The starting player whispers a message into the ear of the next player. That second player then passes along the message to the third person and so on until the message reaches the final recipient, who relays it to the group aloud. Often, what the first person said and the last person heard are laughably different; the information gets garbled along the chain.
bits, or qubits , make their way over a channel, their quantum states can degrade or be lost entirely. Such decoherence is especially common over longer and longer distances because qubits—whether existing as particles of light , electrons, atoms, or other forms—are inherently fragile, governed by the laws of quantum physics, or the physics of very small objects.quantum properties
On the sensing front, connecting quantum sensors to share quantum information may enable new capabilities and performance gains beyond those of an individual sensor. For example, a shared quantum reference between multiple sensors could be used to more precisely locate radio-frequency emission sources.
"Quantum repeaters are a critical technology for quantum networks to successfully send information over lossy links," Hamilton says."But nobody has made a fully functional quantum repeater yet." Ben Dixon, a researcher in the Optical and Quantum Communications Technology Group, explains how the process works."First, you need to generate pairs of specific entangled qubits and transmit them in different directions across the network link to two separate quantum repeaters, which capture and store these qubits.
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