Fermilab Redmine

01/27/2020

02:51 PM Superconducting Quantum Computing Task #23809: DR1_Run_6 - Measure qubit from McDermott

Tried T1 with two different repetition rates: 1 kHz(red) and 10 kHz(blue), no difference:
!2481272020.JPG!
C:\redmi...

12:02 AM Superconducting Quantum Computing Task #23809: DR1_Run_6 - Measure qubit from McDermott

Increased power of the qubit oscillator to -25 dBm. This allowed to achieve same frequency of Rabi oscillations with ...

01/26/2020

11:42 AM Superconducting Quantum Computing Task #23809: DR1_Run_6 - Measure qubit from McDermott

Scanned up to 300 ns.
!11381262020.JPG!
C:\redmine\runs\DR1_run_6\Labber\Data\2020\01\Data_0126\Test3_pulsed_qubit...

12:47 AM Superconducting Quantum Computing Task #23809: DR1_Run_6 - Measure qubit from McDermott

Finished 3D scan
!12451262020.JPG!
C:\redmine\runs\DR1_run_6\Labber\Data\2020\01\Data_0125\Test3_pulsed_qubit_scan_...

01/25/2020

08:24 PM Superconducting Quantum Computing Task #23809: DR1_Run_6 - Measure qubit from McDermott

Modified parameters:
1) Switched to upper side band +100 MHz for qubit frequency.
2) Tuned I-Q corrections for qubi...

01/23/2020

07:58 PM Superconducting Quantum Computing Task #23809: DR1_Run_6 - Measure qubit from McDermott

See attached file with updates.

01/16/2020

10:22 PM Superconducting Quantum Computing Task #23809: DR1_Run_6 - Measure qubit from McDermott

With the above new settings I think we can observe two-photon transition. I've just finished qubit scan vs. frequency...

08:46 PM Superconducting Quantum Computing Task #23809: DR1_Run_6 - Measure qubit from McDermott

Update:
we were focused on hardware problems last 2 days:
1) we found that I-Q corrections for vector signal genera...

01/09/2020

05:23 PM Superconducting Quantum Computing Task #23809: DR1_Run_6 - Measure qubit from McDermott

Update:
we scanned today qubit frequency and power and here is the result:
C:\redmine\runs\DR1_run_6\Labber\Data\20...

01/08/2020

05:50 PM Superconducting Quantum Computing Task #23809: DR1_Run_6 - Measure qubit from McDermott

Update:
1) we measured power spectrogram with current biasing = 0.315 mA with VNA
C:\redmine\runs\DR1_run_6\Labber\...