A V-shape superconducting artificial atom based on two inductively coupled transmons

Bibliographic Details
Title: A V-shape superconducting artificial atom based on two inductively coupled transmons
Authors: Dumur, É., Küng, B., Feofanov, A. K., Weissl, T., Roch, N., Naud, C., Guichard, W., Buisson, O.
Source: Phys. Rev. B 92, 020515 (2015)
Publication Year: 2015
Collection: Condensed Matter
Quantum Physics
Subject Terms: Quantum Physics, Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Superconductivity
More Details: Circuit quantum electrodynamics systems are typically built from resonators and two-level artificial atoms, but the use of multi-level artificial atoms instead can enable promising applications in quantum technology. Here we present an implementation of a Josephson junction circuit dedicated to operate as a V-shape artificial atom. Based on a concept of two internal degrees of freedom, the device consists of two transmon qubits coupled by an inductance. The Josephson nonlinearity introduces a strong diagonal coupling between the two degrees of freedom that finds applications in quantum non-demolition readout schemes, and in the realization of microwave cross-Kerr media based on superconducting circuits.
Comment: 5 pages, 3 figures
Document Type: Working Paper
DOI: 10.1103/PhysRevB.92.020515
Access URL: http://arxiv.org/abs/1501.04892
Accession Number: edsarx.1501.04892
Database: arXiv
More Details
DOI:10.1103/PhysRevB.92.020515