Researchers have designed a protocol for harnessing the power of quantum sensors. The protocol could give sensor designers the ability to fine-tune quantum systems to sense signals of interest, creating sensors that are vastly more sensitive than traditional sensors.
Researchers from North Carolina State University and the Massachusetts Institute of Technology have designed a protocol for harnessing the power of quantum sensors. The protocol could give sensor designers the ability to fine-tune quantum systems to sense signals of interest, creating sensors that are vastly more sensitive than traditional sensors.
Specifically, the researchers designed an algorithmic framework that couples a qubit to a bosonic oscillator. Qubits, or quantum bits, are quantum computing's counterpart to classical computing's bits -- they store quantum information and can only be in a superposition of two basis states: ├ |0⟩, ├ |1⟩.
"This coupling gives us a handle on the bosonic oscillator, so we could use a polynomial function -- math that describes wave forms -- to engineer the oscillator's wave function to take a particular shape, thus attuning the sensor to the target of interest," Liu says. "Our work is useful because it utilizes readily available quantum resources in leading quantum hardware in a fairly simple way," Liu says."This approach serves as an alarm or indicator that a signal is there, without requiring costly repeated measurements. It's a powerful way to extract useful information efficiently from an infinite dimensional system."
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