?url_ver=Z39.88-2004&rft_id=10.1109%2Fqce57702.2023.10291&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=https%3A%2F%2Fround-lake.dustinice.workers.dev%3A443%2Fhttps%2Feprints.gla.ac.uk%2F345264%2F&rft.title=Electro-Optical+Control+and+Readout+of+Superconducting+Devices&rft.creator=Rose%2C+Calum&rft.creator=Pruiti%2C+Natale+G&rft.creator=Kelly%2C+Daniel&rft.creator=Sorel%2C+Marc&rft.creator=Casaburi%2C+Alessandro&rft.creator=Weides%2C+Martin&rft.description=Quantum+computing+is+a+rapidly+evolving+field+with+potential+for+solving+complex+problems+beyond+the+reach+of+classical+computers.+Scalability+in+qubit+design+and+signal+processing+architecture+within+cryostats+is+necessary+for+taking+advantage+of+quantum+computing's+potential.+Current+state+of+the+art+qubit+technology+requires+both+a+feed+and+readout+line+for+each+qubit+within+a+quantum+processor%2C+with+these+lines+generally+being+metallic+coaxial+cables.+For+stainless+steel+cables+this+represents+a+significant+heat+load+into+the+cryostat.+An+alternative+approach+involves+using+optical+fibers+for+signal+transmission%2C+as+optical+fibers+have+a+thermal+conductivity+two+orders+of+magnitude+lower+than+stainless+steel+coaxial+cables.+The+proposed+method+for+optical+signal+transmission+relies+on+electro-optic+modulation%2C+where+a+voltage+applied+to+an+electro-optic+material+changes+its+refractive+index%2C+allowing+for+a+controllable+phase+change+to+be+applied+to+any+light+passing+through+the+material.+This+concept+can+be+combined+with+on-chip+photonic+waveguide+technology+to+build+fiber-coupled+phase+modulators+as+well+as+intensity+modulators+using+on+chip+interferometers.+The+proposed+architecture+uses+a+room+temperature+intensity+modulator+to+encode+microwave+signals+onto+a+laser+signal%2C+which+is+recovered+at+cryogenic+temperatures+using+a+photodiode+and+used+as+input+for+a+device+under+test.+The+output+of+the+test+device+is+encoded+onto+light+using+a+phase+modulator+and+recovered+at+room+temperature+through+interferometry.+Proof-of-concept+experiments+have+been+carried+out+at+room+temperature%2C+including+noise+characterization+and+preliminary+tests+of+components+at+cryogenic+temperatures.&rft.publisher=IEEE&rft.date=2023-11-30&rft.type=Conference+Proceedings&rft.type=PeerReviewed&rft.identifier=+++Rose%2C+Calum+%3Chttps%3A%2F%2Fround-lake.dustinice.workers.dev%3A443%2Fhttps%2Feprints.gla.ac.uk%2Fview%2Fauthor%2F67461.html%3E%2C+Pruiti%2C+Natale+G+%3Chttps%3A%2F%2Fround-lake.dustinice.workers.dev%3A443%2Fhttps%2Feprints.gla.ac.uk%2Fview%2Fauthor%2F53827.html%3E%2C+Kelly%2C+Daniel+%3Chttps%3A%2F%2Fround-lake.dustinice.workers.dev%3A443%2Fhttps%2Feprints.gla.ac.uk%2Fview%2Fauthor%2F63648.html%3E%2C+Sorel%2C+Marc+%3Chttps%3A%2F%2Fround-lake.dustinice.workers.dev%3A443%2Fhttps%2Feprints.gla.ac.uk%2Fview%2Fauthor%2F10351.html%3E%2C+Casaburi%2C+Alessandro+%3Chttps%3A%2F%2Fround-lake.dustinice.workers.dev%3A443%2Fhttps%2Feprints.gla.ac.uk%2Fview%2Fauthor%2F29948.html%3E+and+Weides%2C+Martin+%3Chttps%3A%2F%2Fround-lake.dustinice.workers.dev%3A443%2Fhttps%2Feprints.gla.ac.uk%2Fview%2Fauthor%2F45845.html%3E++(2023)++Electro-Optical+Control+and+Readout+of+Superconducting+Devices.+++In%3A+2023+IEEE+International+Conference+on+Quantum+Computing+and+Engineering+(QCE)%2C+Bellevue%2C+WA%2C+USA%2C+17-22+September+2023%2C++pp.+379-380.+++ISBN+9798350343236+(doi%3A+10.1109%2Fqce57702.2023.10291+%3Chttps%3A%2F%2Fround-lake.dustinice.workers.dev%3A443%2Fhttps%2Fdoi.org%2F10.1109%2Fqce57702.2023.10291%3E)+++++&rft.relation=10.1109%2Fqce57702.2023.10291&rft.identifier=10.1109%2Fqce57702.2023.10291