7 papers
Automating detection of Two-Level Systems in Superconducting Qubits
Rama Khalil, Cameron J. Kopas, Avinash Pathapati +9
Microscopic two-level system (TLS) defects remain a primary mechanism of decoherence and operational instability in superconducting transmon qubits, necessitating scalable and auto…
Identification of soft modes in amorphous AlO via first-principles
Alexander C. Tyner, Joshuah T. Heath, Thue Christian Thann +4
Amorphous AlO is a fundamental component of modern superconducting qubits. While amphorphous oxides offer distinct advantages, such as directional isotropy and a consis…
Multipolar multiferroics in / Mott insulators
Saikat Banerjee, Stephan Humeniuk, Alan R. Bishop +2
We extend the concept of conventional multiferroicity \ -- where ferroelectric and ferromagnetic orders coexist \ -- to include multipolar degrees of freedom. Specifically, we expl…
Many-body effects of two-level systems in superconducting qubits
Joshuah T. Heath, Alexander C. Tyner, Thue Christian Thann +4
Superconducting qubits are often adversely affected by two-level systems (TLSs) within the Josephson junction, which contribute to decoherence and subsequently limit the performanc…
Large inverse Faraday effect for Rydberg states of free atoms and isolated donors in semiconductors
Patrick J. Wong, Ivan M. Khaymovich, Gabriel Aeppli +1
We report on the induction of magnetization in Rydberg systems by means of the inverse Faraday effect, and propose the appearance of the effect in two such systems, Rydberg atoms p…
Quantum Sensing from Gravity as Universal Dephasing Channel for Qubits
Alexander V. Balatsky, Pedram Roushan, Joris Schaltegger +1
We investigate the interaction of a transmon qubit with a classical gravitational field. Exploiting the generic phenomena of the gravitational redshift and Aharonov-Bohm phase, we…