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arXiv · 2306.15797

Microwave power harvesting using resonator-coupled double quantum dot photodiode

Subhomoy Haldar·Drilon Zenelaj·Patrick P. Potts·Harald Havir·Sebastian Lehmann·Kimberly A. Dick·Peter Samuelsson·Ville F. Maisi
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Abstract

We demonstrate a microwave power-to-electrical energy conversion in a resonator-coupled double quantum dot. The system, operated as a photodiode, converts individual microwave photons to electrons tunneling through the double dot, resulting in an electrical current flowing against the applied voltage bias at input powers down to 1 femto-watt. The device attains a maximum power harvesting efficiency of 2%, with the photon-to-electron conversion efficiency reaching 12% in the single photon absorption regime. We find that the power conversion depends on thermal effects showing that thermodynamics plays a crucial role in the single photon energy conversion.

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Subhomoy Haldar, Drilon Zenelaj, Patrick P. Potts, Harald Havir, Sebastian Lehmann, Kimberly A. Dick, Peter Samuelsson, Ville F. Maisi. 2023-06-27. Microwave power harvesting using resonator-coupled double quantum dot photodiode. https://doi.org/10.1103/physrevb.109.l081403

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