Double Signal: Quantum Noise Retreats ⚡ экспресс
Original: "Enhancing qubit readout fidelity with two-mode squeezing of the coherent measurement signal"
Like an echo amplifying a whisper: physicists have found a way to cancel noise from quantum signals.
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To know what a quantum bit 'thinks,' its signal is amplified in a special way—a ghostly twin is born at a different frequency. If you then add these two signals with a clever shift, the noise almost disappears. This trick dramatically boosts accuracy and brings quantum computers one step closer to reality.
🎯 The quietest amplifier in the world adds only half a quantum of noise—that's the fundamental limit. The new method circumvents it by using hidden correlations between two signals.