Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session W07: Quantum Amplifiers, Bolometers, and Detectors
8:00 AM–11:00 AM,
Friday, March 6, 2020
Room: 102
Sponsoring
Unit:
DQI
Chair: Guilhem Ribeill, BBN Technology - Massachusetts
Abstract: W07.00004 : Frequency tunable single microwave photodetector based on irreversible qubit-photon coupling*
Presenter:
Emanuele Albertinale
(CEA-Saclay)
Authors:
Emanuele Albertinale
(CEA-Saclay)
Raphaël Lescanne
(École Normale Superieure)
Samuel Déleglise
(LKB Sorbonne)
Zaki Leghtas
(École Normale Superieure)
Daniel Esteve
(CEA-Saclay)
Patrice Bertet
(CEA-Saclay)
Emmanuel Flurin
(CEA-Saclay)
We report the observation of a new type of interaction between a two level system and a microwave resonator. These two quantum systems do not interact coherently but share a common dissipative mechanism to a cold bath : the qubit irreversibly switches to its excited state if and only if a photon enters the resonator. This highly correlated dissipation mechanism is used to detect itinerant photons impinging on a frequency tunable resonator. The scheme does not require any prior knowledge of photon waveform or arrival time, and dominant decoherence mechanisms do not trigger spurious events. We demonstrate a detection efficiency of 65%, a record low dark count rate of 1/ms over a frequency tuning range of 200 MHz and the capability to operate the detector in cyclic mode with
a 50% duty cycle on a 10 µs detection sequence, making it a practical tool for quantum sensing and measurement-based computing in microwave domain.
*EU Horizon 2020 Marie Curie grant agreement 765267
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