The ability to perform fast and robust operations on multi-qubit quantum systems is a necessity for realizing reliable quantum computation. Unfortunately, the inevitable interaction between a quantum system and its environment presents an obstacle for achieving such operations. Despite this challenge, when used in tandem, quantum noise characterization and quantum control provide a means for engineering targeted control protocols that achieve noise-robust quantum logic operations informed by knowledge of the underlying noise properties. In this talk, we specifically focus on the characterization and mitigation of temporally correlated control noise. First, we present recent results on characterizing temporally correlated control noise in the presence of strong dephasing and detuning noise. Through the use of filter design methods, we will show that one can design control waveforms that combine attributes of noise characterization sequences with attributes of noise suppression sequences. Second, we demonstrate an approach for engineering quantum control that optimally mitigates temporally-correlated control noise. Our approach takes the characterization of the control noise as input and utilizes model-based descriptions of the noisy dynamics to frame the search for control solutions as a convex gate-based circuit optimization. When used in concert, the presented characterization and control protocols enable improved estimation of control noise power spectra and efficient design of noise-tailored provably optimal control.
Robert Barr: 11:00 a.m. to 11:30 a.m
Colin Trout: 11:30 a.m. to 12:00 p.m.
Join Zoom Meeting
https://umd.zoom.us/j/95071159938?pwd=NWpXTDdoNisyckNGbnROc3JZcTlqQT09
Meeting ID: 950 7115 9938
Passcode: 681204
One tap mobile
+13017158592,,95071159938#,,,,*681204# US (Washington DC)
+13126266799,,95071159938#,,,,*681204# US (Chicago)
Dial by your location
+1 301 715 8592 US (Washington DC)
+1 312 626 6799 US (Chicago)
+1 646 931 3860 US
+1 929 436 2866 US (New York)
+1 669 444 9171 US
+1 669 900 6833 US (San Jose)
+1 253 215 8782 US (Tacoma)
+1 346 248 7799 US (Houston)
Meeting ID: 950 7115 9938
Passcode: 681204
Find your local number: https://umd.zoom.us/u/adGA1zZcXi
Join by SIP
95071159938@zoomcrc.com
Join by H.323
162.255.37.11 (US West)
162.255.36.11 (US East)
115.114.131.7 (India Mumbai)
115.114.115.7 (India Hyderabad)
213.19.144.110 (Amsterdam Netherlands)
213.244.140.110 (Germany)
103.122.166.55 (Australia Sydney)
103.122.167.55 (Australia Melbourne)
149.137.40.110 (Singapore)
64.211.144.160 (Brazil)
149.137.68.253 (Mexico)
69.174.57.160 (Canada Toronto)
65.39.152.160 (Canada Vancouver)
207.226.132.110 (Japan Tokyo)
149.137.24.110 (Japan Osaka)
Meeting ID: 950 7115 9938
Passcode: 681204