Using Sideband Transitions for Two-Qubit Operations in Superconducting Circuits

Abstract

We demonstrate time resolved driving of two-photon blue sideband transitions between superconducting qubits and a transmission line resonator. Using the sidebands, we implement a pulse sequence that first entangles one qubit with the resonator, and subsequently distributes the entanglement between two qubits. We show generation of 75% fidelity Bell states by this method. The full density matrix of the two qubit system is extracted using joint measurement and quantum state tomography, and shows close agreement with numerical simulation. The scheme is potentially extendable to a scalable universal gate for quantum computation.

4 pages, 5 figures, version with high resolution figures available at http://qudev.ethz.ch/content/science/PubsPapers.html

References in corpus (17)

• Mixed State Entanglement and Quantum Error Correction
• Circuit Quantum Electrodynamics: Coherent Coupling of a Single Photon to a Cooper Pair Box
• Charge insensitive qubit design derived from the Cooper pair box
• Cavity quantum electrodynamics for superconducting electrical circuits: an architecture for quantum computation
• Coupling Superconducting Qubits via a Cavity Bus
• Coherent dynamics of a flux qubit coupled to a harmonic oscillator
• Quantum information processing with circuit quantum electrodynamics
• Coherent quantum state storage and transfer between two phase qubits via a resonant cavity
• Demonstration of conditional gate operation using superconducting charge qubits
• Approaching Unit Visibility for Control of a Superconducting Qubit with Dispersive Readout
• Suppressing Charge Noise Decoherence in Superconducting Charge Qubits
• AC-Stark Shift and Dephasing of a Superconducting Qubit Strongly Coupled to a Cavity Field
• Process tomography of ion trap quantum gates
• Controllable coupling of superconducting flux qubits
• Two-Qubit State Tomography using a Joint Dispersive Read-Out
• Sideband Transitions and Two-Tone Spectroscopy of a Superconducting Qubit Strongly Coupled to an On-Chip Cavity
• Superconducting qubits can be coupled and addressed as trapped ions

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