Google LLC (20240220836). Measuring Quantum Gate Fidelity Relative to a Unitary simplified abstract

Measuring Quantum Gate Fidelity Relative to a Unitary

Organization Name

Google LLC

Inventor(s)

Dripto Mazumdar Debroy of Los Angeles CA (US)

Vadim Smelyanskiy of Mountain View CA (US)

Wojciech Jerzy Mruczkiewicz of Zürich (CH)

Zhang Jiang of El Segundo CA (US)

Élie Genois of Sherbrooke (CA)

Jonathan Arthur Gross of Venice CA (US)

Measuring Quantum Gate Fidelity Relative to a Unitary - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240220836 titled 'Measuring Quantum Gate Fidelity Relative to a Unitary

In a patent application, systems and methods for quantum computing devices are described. One example involves preparing qubits in a selected initial state, implementing a quantum circuit with repetitions, mapping qubit states to a target state, measuring qubits, and determining fidelity between circuits and unitaries based on measurements.

• Quantum computing devices are provided with methods for preparing qubits in specific initial states and implementing quantum circuits.
• The method involves using quantum gates in a first circuit for repetitions and a second circuit to map qubit states to a target state.
• Measurements of qubits are performed to determine the fidelity between the implemented circuits and associated unitaries.
• The innovation allows for precise control and manipulation of qubit states for quantum computing applications.
• By measuring fidelity, the method ensures the accuracy and reliability of quantum operations in the computing device.

Potential Applications

The technology can be applied in quantum computing, cryptography, optimization problems, and simulation of quantum systems.

Problems Solved

The technology addresses the challenges of preparing and manipulating qubit states accurately in quantum computing devices.

Benefits

The benefits of this technology include improved efficiency, accuracy, and reliability in quantum computing operations.

Commercial Applications

Title: Quantum Computing Devices for Enhanced Performance This technology can be commercialized in industries such as cybersecurity, finance, healthcare, and scientific research for advanced computing solutions.

Prior Art

Readers can explore prior research on quantum computing, quantum gates, and qubit manipulation techniques for related information.

Frequently Updated Research

Stay updated on the latest advancements in quantum computing, quantum algorithms, and quantum error correction techniques for further insights.

Questions about Quantum Computing Devices

1. How does the fidelity measurement impact the performance of quantum computing devices?

  - The fidelity measurement ensures the accuracy and reliability of quantum operations, leading to improved performance.

2. What are the potential challenges in implementing quantum circuits for qubit manipulation?

  - Some challenges may include decoherence, gate errors, and noise in the quantum system that can affect circuit implementation.

Original Abstract Submitted

systems and methods for quantum computing devices are provided. in one example, a method may include preparing one or more qubits in a selected initial state of a set of initial states. the method may include implementing a first quantum circuit for n repetitions on the one or more qubits, the first quantum circuit comprising one or more quantum gates. the method may include implementing a second quantum circuit to map a state of the one or more qubits towards a target state, the second quantum circuit based on a unitary associated with the first quantum circuit. the method may include performing a measurement of the one or more qubits. the method may include determining a fidelity between the first quantum circuit and the unitary based at least in part on the measurement of the one or more qubits.