Events Calendar

AI SEMINAR-Decoherence and Measurement Properties of Phase Qubits

Speaker: Emily Pritchett, Saarland University in Saarbrücken, Germany

Talk Title: Decoherence and Measurement Properties of Phase Qubits

Series: AISeminar

Abstract: Over the past five years, the coherence times of phase qubits have increased an order of magnitude to ~1μs, but are now multiple orders of magnitude shorter than leading superconducting qubits. The saturation of coherence times in phase qubits has spurred a large experimental initiative in the superconducting community to understand and engineer cleaner materials. I present numerical evidence that many of these spurious resonances are intrinsic to the phase qubit itself and not the environment as was previously assumed.

While identifying this problem could lead to longer coherence times through better control techniques, I instead will focus on applications of the phase qubit as a controllably 'dirty' quantum device, immediately useful for practical quantum measurement problems. Phase qubits can be used as a novel photon counter (JPM). I discuss many practical applications of such a measurement scheme, including the creation of interesting nonclassical states.



Biography: Bio: Emily Pritchett is a postdoctoral researcher in theoretical physics at the Saarland University. She received a PhD in Physics from the University of Georgia in 2010.

Host: Kristina Lerman

Webcast: http://webcasterms1.isi.edu/mediasite/Viewer/?peid=d521c832254c4618931fa7f55fa1e0ad1d

Location: Information Science Institute (ISI) -

WebCast Link: http://webcasterms1.isi.edu/mediasite/Viewer/?peid=d521c832254c4618931fa7f55fa1e0ad1d

Audiences: Everyone Is Invited

Contact: Alma Nava / Information Sciences Institute