Journal
PHYSICAL REVIEW LETTERS
Volume 102, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.102.067202
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Funding
- EPSRC [EP/D066417/1]
- EPSRC [EP/D066417/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/D066417/1] Funding Source: researchfish
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We study a resonator coupled to a generic detector and calculate the noise spectra of the two subsystems. We describe the coupled system by a closed, linear, set of Langevin equations and derive a general form for the finite frequency noise of both the resonator and the detector. The resonator spectrum is the well-known thermal form with an effective damping, frequency shift and diffusion term. In contrast, the detector noise shows a rather striking Fano-like resonance; i.e., there is a resonance at the renormalized frequency and an antiresonance at the bare resonator frequency. As examples of this effect, we calculate the spectrum of a normal-state single electron transistor coupled capacitively to a resonator and of a cavity coupled parametrically to a resonator.
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