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Updated: Mar 18, 2026
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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
Published on: August 2, 2019
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Stabilizing Entanglement via Symmetry-Selective Bath Engineering in Superconducting Qubits.
M E Kimchi-Schwartz1, L Martin1, E Flurin1
1Quantum Nanoelectronics Laboratory, Department of Physics, University of California, Berkeley, California 94720, USA.
Physical Review Letters
|July 2, 2016
Summary
Bath engineering stabilizes entanglement between superconducting qubits using engineered symmetries. This approach efficiently creates specific quantum states and is scalable for future quantum technologies.
Area of Science:
- Quantum Information Science
- Quantum Computing
- Quantum Engineering
Background:
- Bath engineering offers an alternative to traditional quantum control methods.
- It uses engineered dissipation to create desired quantum states.
- Superconducting qubits are a leading platform for quantum computation.
Purpose of the Study:
- To demonstrate entanglement stabilization in superconducting qubits via bath engineering.
- To utilize engineered symmetries for selective state preparation.
- To show suppression of unwanted entangled states.
Main Methods:
- Engineered coupling to lossy modes in a superconducting circuit.
- Utilized symmetry properties of the dissipative environment.
- Implemented parity selection rules for state control.
Main Results:
- Achieved dissipative stabilization of entanglement between two transmon qubits.
- Demonstrated symmetry-selective stabilization of a target Bell state.
- Showed suppression of an oppositely symmetric Bell state.
- Reached a steady-state fidelity of F=0.70.
Conclusions:
- Bath engineering provides a resource-efficient method for generating entangled states.
- Engineered dissipation and symmetries offer precise control over quantum states.
- The demonstrated technique is scalable to multi-qubit systems.
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