Decoupling Superconducting Qubits from the Quantum Bus/Readout Resonator to Enable Scaling

Technical Report · Tue Sep 01 00:00:00 EDT 2015

DOI:https://doi.org/10.2172/1504855· OSTI ID:1504855

Lewis, Rupert M. ^[1]; Henry, Michael David ^[1]

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1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Superconducting qubits have made great strides in coherence time, gating, and algorithms. However, to achieve real scalability, more is required. We propose to study the problem of coupling and decoupling a transmon, a popular type of superconducting qubit, from its host resonator, which serves the dual role of a bus connecting qubits together and a readout channel. The transmon couples to its host resonator via its electric-dipole moment. We plan to use a trick of quantum mechanics to null the dipole moment and decouple the transmon. In doing so, we hope to study a variety of physics associated with multi-qubit operation, control, and readout.

• Research Organization: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Sandia National Lab. (SNL-CA), Livermore, CA (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1504855
• Report Number(s): SAND-2015-8680; 607449
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY