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MicroCloud Hologram Inc. is developing semiconductor quantum dot hole spin qubit technology, pushing the boundaries of quantum computing

SHENZHEN, China, December 30, 2024 /PRNewswire/ — MicroCloud Hologram Inc. (NASDAQ: HOLO), (the “Company”) has developed an advanced technological solution based on its extensive research and continuous innovation in quantum technology: the use of a fast adiabatic propulsion protocol to provide coherent control of two heavy hole spin qubits in a double quantum dot (QD) system. In traditional quantum experimental protocols, conventional methods such as linear ramps, π-pulses or Landau-Zener channels have contributed to the gradual development of quantum control techniques. However, due to their inherent physical limitations, these methods find it difficult to meet the current stringent high fidelity requirements in quantum information processing. In contrast, the fast adiabatic driving protocol developed by HOLO has significant technological advantages.

The fast adiabatic driving protocol is essentially a precise energy control paradigm based on the quantum adiabatic theorem. In the context of a complex double quantum dot (QD) system, it carefully designs control paths according to the system’s adiabatic evolution rules and guides the two heavy-hole spin qubits along predefined trajectories with high-precision quantum state fidelity to achieve state transitions. This approach cleverly avoids the risk of quantum state distortions caused by abrupt energy changes or external disturbances. Similar to precise navigation during interstellar travel, this control mode ensures accurate quantum state transitions by carefully managing the energy fluctuations in the quantum system, achieving higher quantum state fidelity compared to traditional protocols.

From the perspective of practical application efficiency, the implementation of fast quasi-adiabatic propulsion through spin-orbit coupling mechanisms leads to two significant technological results. On the one hand, the charge noise in the qubit operating process is greatly suppressed. Charge noise has long been a problematic issue in the field of quantum control, acting as an “invisible nuisance” hidden in the microscopic world. It disrupts the stable state of qubits through subtle and continuous fluctuations, often leading to computational errors. HOLO’s innovative technological approach serves as a solid “electromagnetic shielding barrier” for qubits, optimizing the electrical environment of the quantum system to effectively block the ingress of charge noise and ensure that qubits operate stably in a relatively “low noise” environment. On the other hand, a high level of stability is achieved during qubit initialization. As a crucial starting point for quantum calculations, the stability of the initialization plays a crucial role in the accuracy of subsequent full-round calculations. High stability means that qubits can consistently and precisely return to their original initial state even in the face of external uncertainties such as temperature fluctuations and weak electromagnetic disturbances, providing a solid foundation for executing highly complex and highly precise quantum computing tasks.

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