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Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Multi-target-qubit unconventional geometric phase gate in a multi-cavity system.

Tong Liu¹, Xiao-Zhi Cao¹, Qi-Ping Su¹

¹Department of Physics, Hangzhou Normal University, Hangzhou, Zhejiang 310036, China.

Scientific Reports

|February 23, 2016

Summary

Researchers developed a novel geometric phase gate for multi-cavity quantum information processing. This efficient, single-step multiqubit gate operates independently of qubit count, advancing scalable quantum computing.

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Area of Science:

Quantum Information Processing
Quantum Computing
Cavity Quantum Electrodynamics

Background:

Large-scale quantum information processing (QIP) often requires complex operations on qubits in multiple cavities.
Geometric-phase-based quantum computing offers robustness against errors and local fluctuations.
Efficient multiqubit gates are crucial for advancing QIP.

Purpose of the Study:

To propose a simple and efficient scheme for a multi-target-qubit geometric phase gate in a multi-cavity system.
To demonstrate a single-step operation for this multiqubit gate.
To highlight the gate's applicability to various qubit types.

Main Methods:

Utilizing a geometric-phase-based approach for quantum gate implementation.
Designing a scheme for a common control qubit acting on multiple target qubits in different cavities.
Leveraging a single-step operation for gate realization.

Main Results:

A novel multi-target-qubit unconventional geometric phase gate for multi-cavity systems is presented.
The gate operation time is independent of the number of qubits involved.
The proposed gate is generic and applicable to various qubit platforms like atoms, NV centers, quantum dots, and superconducting qubits.

Conclusions:

The proposed scheme offers a simple, efficient, and robust method for implementing multiqubit gates in distributed quantum systems.
This advancement is significant for scalable quantum information processing and quantum computing.
The gate's generic nature and independence from qubit count enhance its practical utility.