Fermilab Redmine

09/02/2020

10:04 AM Runs Task #24877: DR_1_Run_8

Tried to test pulsed setup with new switches: measured Pappas' qubit readout. As expected, power levels went down by ...

09/01/2020

06:08 PM Runs Revision 544be089 (dr1_run_8): changed wiring

03:32 PM Runs Task #24877: DR_1_Run_8

CW measurement of chi_0 shift of fundamental mode of RI-2 cavity.
High power(20dBm, black)
Low power(-10dBm, blue)
...

08/31/2020

05:18 PM Runs Task #24877: DR_1_Run_8

estimation of TI-1 Q from decay (slightly better than TI-2)
decay time from -64 dB to e times (green line) = 39 ms
...

05:01 PM Runs Task #24877: DR_1_Run_8

We found the resonance of RI-1,
freq = 2.985951150 GHz
Mixing chamber temperature = 65 mK (It is increased a little...

04:45 PM Runs Task #24877: DR_1_Run_8

Some more accurate estimation of TI-2 Q from decay:
decay time from -50 dB to e times (green line) = 32 ms
Q = pi *...

03:25 PM Runs Task #24877: DR_1_Run_8

We found RI-2 cavity,
f= 2.985769709 GHz
Q ~ 1e8
temp of mixing chamber = 53 mK

08/27/2020

04:55 PM Runs Task #24877 (New): DR_1_Run_8

+*Initial information on DR1_Run_8.*+
*Main goal:* measure Rigetti qubits inside 3 GHz cavities.
Schematics of ...

04:40 PM Runs Revision 231952a3 (dr1_run_7): initial commit

04:36 PM Runs Revision 99756b20 (dr1_run_8): initial commit