Observation of sub-Fourier resonances in a quantum-chaotic system

Details Observation of sub-Fourier resonances in a quantum-chaotic system Observation of sub-Fourier resonances in a quantum-chaotic system

2002-07-17

arxiv.org/abs/quant-ph/0207097v1

Physical Review Letters 89, 224101 (2002)

Physics

Quantum Physics

4 pages, RevTeX 4, submitted to PRL

Scientific paper

10.1103/PhysRevLett.89.224101

We experimentally show that the response of a quantum-chaotic system can display resonance lines sharper than the inverse of the excitation duration. This allows us to discriminate two neighboring frequencies with a resolution nearly 40 times better than the limit set by the Fourier inequality. Furthermore, numerical studies indicate that there is no limit, but the loss of signal, to this resolution, opening ways for the development of sub-Fourier quantum-chaotic signal processing.

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