Entangled quantum state purification method and device, equipment, storage medium and product
A purification method and quantum state technology, applied in quantum computers, calculation models, calculations, etc., can solve problems such as entangled state noise
Active Publication Date: 2021-03-19
BEIJING BAIDU NETCOM SCI & TECH CO LTD
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Unfortunately, entangled states generated by quantum devices are often noisy and still some distance away from the ideal Bell state
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[0028] The exemplary embodiments of the present application will be described below in connection with the accompanying drawings, including various details of the present application embodiments to help understand, and they should be considered simply exemplary. Accordingly, it will be appreciated by those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. Similarly, a description of the well-known functions and structures is omitted in order to clear and concise, the following description is omitted.
[0029] In quantum techniques, quantum entanglement is a key resource for realizing various quantum information technologies such as quantum security communication, quantum computing, quantum network, and Bell state is Quantum Key Distribution, Quantum Superdense Coding. Important basic resources of quantum TELEPORTATION. Therefore, the high-fidelity Bell st...
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The invention provides an entangled quantum state purification method and device, equipment, a storage medium and a product, and relates to the field of quantum computing. The specific implementationscheme is as follows: determining a first group of quantum bits and a second group of quantum bits; acting a first parameterized quantum circuit corresponding to the first group of quantum bits on atleast part of the first quantum bits in the first group of quantum bits, and obtaining a first measurement result; acting a second parameterized quantum circuit corresponding to a second group of quantum bits on at least part of second quantum bits in the second group of quantum bits to obtain a second measurement result, the target second quantum bit being a quantum bit entangled with the targetfirst quantum bit; and purifying the entangled quantum states corresponding to the target first quantum bit and the target second quantum bit at least based on the relationship between the first measurement result and the second measurement result, and obtaining a target purified quantum state. In this way, purification of the entangled quantum state is achieved.
Description
Technical field [0001] The present application relates to the field of data processing, in particular to quantum calculations. Background technique [0002] One of the most important resources in Quantum Technology is quantum entanglement, quantum entanglement is the basic components of quantum computing and quantum information processing. Among them, the most important thing is that Bell State is used to describe the maximum entangled state between two quantum bit (or quantum systems), including four maximum entangled states. Bell state has a vital role in quantum safety communication, distributed quantum calculations. Unfortunately, the entangled state generated by quantum equipment is usually noise, and there is still a distance from the ideal Bell state. Therefore, how to effectively correct the entangled distillation (Entanglement Purification) from the Entanglement Purification, which is purified from the Entanglement Purification, which has become a quantum technology. A c...
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IPC IPC(8): G06N10/00
CPCG06N10/00
Inventor 王鑫赵犇池赵炫强王子和刘人宇宋旨欣
Owner BEIJING BAIDU NETCOM SCI & TECH CO LTD