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Task #22993

Task #22814: 2.6 cavity with qubit (TTS1AES001)

Frequency detuning 2.6GHz

Added by Silvia Zorzetti 12 months ago. Updated 12 months ago.

Status:
New
Priority:
Normal
Assignee:
-
Start date:
07/25/2019
Due date:
% Done:

0%

Estimated time:
Duration:

Description

I am summarizing here the last finding on the 2.6GHz fundamental mode and detuning:
-- we see a change between the data from July 1st and July 24th. Looks like we are injecting more power.
-- I have checked every single component (cables, amplifier, splitter)

July 1st: July 1st 2D plot
July 24th: July 24th 2D plot

-- Last spectroscopy at lower power show instead a negative shift, see the normalized 2D plot of the low power sweep. However the detuning is very low about -40Hz
This is normalized power (ZOOM): low power 2D normalized
This is absolute value: low power 2D
Roman showed about +100mK jump:

7376307135mag_lines.png (28.1 KB) 7376307135mag_lines.png July 1st 2D plot Silvia Zorzetti, 07/25/2019 02:48 PM
7376307135mag.png (75.8 KB) 7376307135mag.png July 1st line cut Silvia Zorzetti, 07/25/2019 02:48 PM
7376315069mag.png (122 KB) 7376315069mag.png July 24th line cut Silvia Zorzetti, 07/25/2019 02:49 PM
7376315070mag_lines.png (29.8 KB) 7376315070mag_lines.png July 24th 2D plot Silvia Zorzetti, 07/25/2019 02:49 PM
7376316141mag_zoom_norm.png (86.8 KB) 7376316141mag_zoom_norm.png low power 2D normalized Silvia Zorzetti, 07/25/2019 02:50 PM
7376316141mag.png (110 KB) 7376316141mag.png low power 2D Silvia Zorzetti, 07/25/2019 02:50 PM
QbitCavTemp.jpg (372 KB) QbitCavTemp.jpg Silvia Zorzetti, 07/25/2019 02:54 PM
7376354398mag_lines.png (156 KB) 7376354398mag_lines.png Silvia Zorzetti, 07/29/2019 10:35 AM
7376354398mag.png (134 KB) 7376354398mag.png Silvia Zorzetti, 07/29/2019 10:35 AM
7376354398norm_mag.png (154 KB) 7376354398norm_mag.png Silvia Zorzetti, 07/29/2019 10:35 AM
7376355162mag.png (96.5 KB) 7376355162mag.png Silvia Zorzetti, 07/29/2019 12:25 PM
7376355162mag_lines.png (51.7 KB) 7376355162mag_lines.png Silvia Zorzetti, 07/29/2019 12:25 PM
7376355162norm_mag.png (126 KB) 7376355162norm_mag.png Silvia Zorzetti, 07/29/2019 12:25 PM
7376356048freq_lines.png (49.4 KB) 7376356048freq_lines.png Silvia Zorzetti, 07/29/2019 02:32 PM
7376356048norm_mag.png (136 KB) 7376356048norm_mag.png Silvia Zorzetti, 07/29/2019 02:32 PM
7376356048mag.png (99.5 KB) 7376356048mag.png Silvia Zorzetti, 07/29/2019 02:32 PM
7376356048mag_lines.png (107 KB) 7376356048mag_lines.png Silvia Zorzetti, 07/29/2019 02:32 PM

History

#1 Updated by Daniil Frolov 12 months ago

  • Parent task set to #22814
  • Project changed from Superconducting Quantum Computing to Runs

#2 Updated by Silvia Zorzetti 12 months ago

From last spectroscopy there is a clear detuning, however this is negative (-50Hz).

I am running spectroscopy on the 4.7GHz mode to see if it has changed and will then resume the "qubit search".

#3 Updated by Silvia Zorzetti 12 months ago

The 4.7 looks better, Positive detuning, about 2.4kHz, see the line cut

#4 Updated by Silvia Zorzetti 12 months ago

Here the finer scan of the 4.7GHz.

About 2.4kHz detuning.

This is the line cut at the bright state

Eric, I will shortly be in your office.



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