In Quantum Sensing, What Beats Beating Noise? Meeting Noise Halfway.

Qubits, the basic units of data for quantum computers, can be harnessed to work as quantum sensors, which could lead to better methods for navigation, resource exploration and timekeeping. Theoretical physicists have found a potential way to design groups of interlinked or “entangled” qubits to protect them from environmental disturbances or “noise” such as temperature changes. These entangled qubits would lose some of their potential sensitivity, but they would also be more robust against noise, making them a promising route to real-world quantum sensors.