Stability of longitudinal coupling for Josephson charge qubits

2007/01/31 by Carsten Hutter, Yuriy Makhlin, Alexander Shnirman +1 · 1 citation
Computer Science · Physics and Astronomy · #Charge (physics) #Charge qubit #Computer science #Condensed matter physics #Coupling (piping) #Josephson effect #Materials science #Phase qubit #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum mechanics #Qubit #Stability (learning theory) #Superconducting quantum computing #Superconductivity #cond-mat.mes-hall #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevb.76.024512

published as Phys. Rev. B 76, 024512 (2007) · 5 pages, 2 figures; additional discussion and references

openalex publication_date 2007/07/19 · arxiv created 2007/07/20 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

For inductively coupled superconducting quantum bits, we determine the conditions when the coupling commutes with the single-qubit terms. We show that in certain parameter regimes such longitudinal coupling can be stabilized with respect to variations of the circuit parameters. In addition, we analyze its stability against fluctuations of the control fields.

Citations

• Quantum Manipulations of Small Josephson Junctions
• Demonstration of conditional gate operation using superconducting charge qubits
• Scalable Quantum Computing with Josephson Charge Qubits
• Spectroscopy on Two Coupled Superconducting Flux Qubits
• Josephson-junction qubits with controlled couplings
• Quantum-state engineering with Josephson-junction devices
• Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box

Cited by

• Spectroscopy of superconducting charge qubits coupled by a Josephson inductance