New scheme for the quantum noise detection: Mesoscopic bolometry
Coupled mesoscopic systems offer exciting opportunities to generate and control quantum correlations between electrons, which constitute an important step towards the integration of quantum optics and electronics. To explorer the interaction mediated by photons is one of the most imperative issues because well-prepared photons can link separate systems quantum-mechanically and, otherwise, they undesirably disturb the quantum state. We present a new scheme to detect the photon exchange between the systems by means of the precise noise thermometry; in the coupled quantum point contacts (QPC) we prove that the temperature of one QPC, where the single quantized conducting channel works as a photon detector, is in perfect proportion to that of the other QPC which is driven to non-equilibrium to emit photons (Figure). The present on-chip bolometry opens up a new way for the detection of the quantum correlation created by photons and for the attractive ultra-precise measurements such as the bolometric photon counting and the advanced metrology.
Figure: The experimental result of the bolometric detection of the quantum noise is shown in 3D image plot.
“Bolometric Detection of Quantum Shot Noise in Coupled Mesoscopic Systems”
by M. Hashisaka, Y. Yamauchi, S. Nakamura, S. Kasai, T. Ono, and K. Kobayashi
Phys. Rev. B, 78, 241303(R) (2008).