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Related Experiment Video

Updated: Jul 4, 2026

Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform

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Published on: August 2, 2019

Controllable coherent population transfers in superconducting qubits for quantum computing.

L F Wei¹, J R Johansson, L X Cen

¹CREST, Japan Science and Technology Agency, Kawaguchi, Saitama 332-0012, Japan.

Physical Review Letters

|June 4, 2008

Summary

This summary is machine-generated.

We present a method for quantum state transfer using Stark-chirped rapid adiabatic passages. This technique enables robust quantum logic gates and qubit readout, particularly for Josephson phase qubits.

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Area of Science:

Quantum Information Science
Quantum Computing
Atomic, Molecular, and Optical Physics

Background:

Coherent population transfer is crucial for quantum information processing.
Existing methods face challenges in robustness and implementation fidelity.
Josephson phase qubits offer a promising platform for quantum computation.

Purpose of the Study:

To propose a novel approach for efficient and robust quantum state transfer.
To enable the development of elementary quantum logic gates.
To facilitate improved qubit readout mechanisms.

Main Methods:

Utilizing controllable Stark-chirped rapid adiabatic passages.
Implementing single-qubit phase-shift operations.
Designing adiabatic pulses exploiting broken parity symmetries in artificial atoms.

Main Results:

Demonstrated evolution-time insensitive population transfers.
Proposed a method applicable to one- and two-qubit systems.
Identified immediate applications in Josephson phase qubit readout.

Conclusions:

The proposed Stark-chirped adiabatic passage technique offers a robust method for quantum state manipulation.
This approach is well-suited for implementation with existing Josephson phase qubits.
The technique can serve as a building block for quantum computing and efficient qubit readout.