公开(公告)号：US20230052753A1

公开(公告)日：2023-02-16

申请号：US17796805

申请日：2021-01-25

Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTT OY

Inventor： Joonas GOVENIUS ,  Juha HASSEL

IPC: G01R29/08

Abstract: The disclosure relates to a quantum detector configured to receive a microwave signal from a microwave source. The quantum detector comprises a main element formed by a main Josephson junction and a Josephson transmission line which is coupled to the main element for outputting a measurement signal. The Josephson transmission line comprises at least a first set of JTL elements and a second set of JTL elements. The capacitively shunted Josephson junction in each JTL element in the first set is weakly damped, and the JTL element in the second set are more strongly damped than the JTL elements in the first set.

公开(公告)号：US20200096391A1

公开(公告)日：2020-03-26

申请号：US16468851

申请日：2017-12-13

Applicant: TEKNOLOGIAN TUTKIMUSKESKUS VTT OY

Inventor： Juha HASSEL ,  Hannu SIPOLA ,  Andrey TIMOFEEV ,  Visa VESTERINEN

IPC: G01J5/10

Abstract: A solution for reading detector arrays is disclosed. The solution comprises generating (400) an excitation signal, varying (402) the frequency of the excitation signal in time, supplying (404) the excitation signal to a detector array comprising a set of thermal detectors. The number of detectors corresponds to the frequencies of the excitation signal. In the solution, the signal is demodulated (406) at the output of the detector array and time-multiplexed base band signal is obtained. An analogue to digital conversion is performed (408) to the time-multiplexed base band signal and the base band signal is demultiplexed (410) to obtain a set of detector signals.