Double-quantum logic gate implementation method based on MPI multi-process

Abstract

The invention belongs to the field of quantum computing, and particularly discloses a double-quantum logic gate implementation method based on MPI multi-process, which comprises the following steps of: calling 2M processes based on MPI communication; wherein M is an integer, M is greater than or equal to 1, and each process number is from 0 to 2M-1; configuring n quantum bits, initializing 2N quantum states of the N quantum bits, distributing each quantum state to each process, wherein N is an integer, and N is greater than or equal to M + 2; determining a to-be-calculated quantum state according to the control bit n1 and the operation bit n2 of the double-quantum logic gate, the to-be-calculated quantum state appearing in groups, and each group comprising four quantum states; wherein n1 and n2 are integers, and n1 is not equal to n2; determining a target process for storing each group of to-be-calculated quantum states; and running the target process to obtain the quantum state amplitude of the quantum bits after the double quantum logic gates act. According to the invention, the calculation capability and calculation efficiency of quantum calculation based on multiple quantum bits and double quantum logic gates can be improved.

Description

technical field [0001] The invention belongs to the field of quantum computing, in particular to an MPI multi-process-based double quantum logic gate realization method. Background technique [0002] Quantum computing is realized through the action of quantum logic gates on qubits to change the logical state of qubits. The logical state of qubits may be a superposition state of |0> state, |1> state, |0> state and |1> state , this superposition makes the calculation amount of quantum computing grow exponentially with the increase of qubits. [0003] A double quantum logic gate is a 4*4 matrix. A double quantum logic gate operates on the two qubits in the quantum circuit only to change the amplitude of the state corresponding to the two qubits. Currently, the double quantum logic acts on the qubits. The implementation of quantum computing is usually based on a single process. As the number of qubits increases, the computing power and computing efficiency of quantu...

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Problems solved by technology

[0003] A double quantum logic gate is a 4*4 matrix. A double quantum logic gate operates on the two qubits in the quantum circuit only to change the amplitude of the state corresponding to the two qubits. Currently, the double quantum logic acts on the qubits. The implementation of quantum computing is usually based on a single process. As the number of qubits increases, the computing power and computing efficiency of quantum computing based on double quantum logic gates will drop significantly.

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