BibTex format
@article{Schmitt:2022:10.1021/acs.nanolett.1c04055,
author = {Schmitt, TW and Connolly, MR and Schleenvoigt, M and Liu, C and Kennedy, O and Chávez-Garcia, JM and Jalil, AR and Bennemann, B and Trellenkamp, S and Lentz, F and Neumann, E and Lindström, T and de, Graaf SE and Berenschot, E and Tas, N and Mussler, G and Petersson, KD and Grützmacher, D and Schüffelgen, P},
doi = {10.1021/acs.nanolett.1c04055},
journal = {Nano Letters: a journal dedicated to nanoscience and nanotechnology},
title = {Integration of topological insulator josephson junctions in superconducting qubit circuits.},
url = {http://dx.doi.org/10.1021/acs.nanolett.1c04055},
volume = {22},
year = {2022}
}
RIS format (EndNote, RefMan)
TY - JOUR
AB - The integration of semiconductor Josephson junctions (JJs) in superconducting quantum circuits provides a versatile platform for hybrid qubits and offers a powerful way to probe exotic quasiparticle excitations. Recent proposals for using circuit quantum electrodynamics (cQED) to detect topological superconductivity motivate the integration of novel topological materials in such circuits. Here, we report on the realization of superconducting transmon qubits implemented with (Bi0.06Sb0.94)2Te3 topological insulator (TI) JJs using ultrahigh vacuum fabrication techniques. Microwave losses on our substrates, which host monolithically integrated hardmasks used for the selective area growth of TI nanostructures, imply microsecond limits to relaxation times and, thus, their compatibility with strong-coupling cQED. We use the cavity-qubit interaction to show that the Josephson energy of TI-based transmons scales with their JJ dimensions and demonstrate qubit control as well as temporal quantum coherence. Our results pave the way for advanced investigations of topological materials in both novel Josephson and topological qubits.
AU - Schmitt,TW
AU - Connolly,MR
AU - Schleenvoigt,M
AU - Liu,C
AU - Kennedy,O
AU - Chávez-Garcia,JM
AU - Jalil,AR
AU - Bennemann,B
AU - Trellenkamp,S
AU - Lentz,F
AU - Neumann,E
AU - Lindström,T
AU - de,Graaf SE
AU - Berenschot,E
AU - Tas,N
AU - Mussler,G
AU - Petersson,KD
AU - Grützmacher,D
AU - Schüffelgen,P
DO - 10.1021/acs.nanolett.1c04055
PY - 2022///
SN - 1530-6984
TI - Integration of topological insulator josephson junctions in superconducting qubit circuits.
T2 - Nano Letters: a journal dedicated to nanoscience and nanotechnology
UR - http://dx.doi.org/10.1021/acs.nanolett.1c04055
UR - https://www.ncbi.nlm.nih.gov/pubmed/35235321
UR - https://pubs.acs.org/doi/10.1021/acs.nanolett.1c04055
UR - http://hdl.handle.net/10044/1/96661
VL - 22
ER -