Quantum private comparison(QPC) aims to accomplish the equality comparison of the secrets from different users without disclosing their genuine contents by using the principles of quantum mechanics. In this paper, we ...Quantum private comparison(QPC) aims to accomplish the equality comparison of the secrets from different users without disclosing their genuine contents by using the principles of quantum mechanics. In this paper, we summarize eight modes of quantum state preparation and transmission existing in current QPC protocols first. Then, by using the mode of scattered preparation and one-way convergent transmission, we construct a new multi-user quantum private comparison(MQPC) protocol with two-particle maximally entangled states, which can accomplish arbitrary pair's comparison of equality amongK users within one execution. Analysis turns out that its output correctness and its security against both the outside attack and the participant attack are guaranteed. The proposed MQPC protocol can be implemented with current technologies. It can be concluded that the mode of scattered preparation and one-way convergent transmission of quantum states is beneficial to designing the MQPC protocol which can accomplish arbitrary pair's comparison of equality among K users within one execution.展开更多
Airflow sensing plays a pivotal role in numerous fields,including medicine,industry,and environmental monitoring.However,detecting bidirectional airflow using a single sensing unit poses significant challenges.In this...Airflow sensing plays a pivotal role in numerous fields,including medicine,industry,and environmental monitoring.However,detecting bidirectional airflow using a single sensing unit poses significant challenges.In this work,a miniature airflow sensing device is introduced,utilizing a GaN optical chip integrated with a biomimetic hair structure.The sensing device comprises a monolithic GaN chip that handles both light emission and detection.The biomimetic hairs,constructed from nylon fibers and PDMS film,undergo structural bending in converting airflow signals into optical changes,modulating the light captured by the on-chip detector.The intensity of the airflow directly correlates with the bending extent of the biomimetic hair,facilitating the precise detection of airflow rates through changes in the photocurrent.The integrated device can measure a wide range of airflow rates from−23.87 ms^(-1) to 21.29 ms^(-1),and exhibit a rapid response time of 13 ms and a detection limit of 0.1 ms^(-1).Characterized by its compact size,fast response time,and bidirectional detection ability,the developed device holds immense potential for applications in breath detection,speech recognition,encoding information,and the realization of logic operations.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.61402407,and 11375152)
文摘Quantum private comparison(QPC) aims to accomplish the equality comparison of the secrets from different users without disclosing their genuine contents by using the principles of quantum mechanics. In this paper, we summarize eight modes of quantum state preparation and transmission existing in current QPC protocols first. Then, by using the mode of scattered preparation and one-way convergent transmission, we construct a new multi-user quantum private comparison(MQPC) protocol with two-particle maximally entangled states, which can accomplish arbitrary pair's comparison of equality amongK users within one execution. Analysis turns out that its output correctness and its security against both the outside attack and the participant attack are guaranteed. The proposed MQPC protocol can be implemented with current technologies. It can be concluded that the mode of scattered preparation and one-way convergent transmission of quantum states is beneficial to designing the MQPC protocol which can accomplish arbitrary pair's comparison of equality among K users within one execution.
基金financial support from the National Natural Science Foundation of China(12074170)the Shenzhen Fundamental Research Program(JCYJ20220530113201003).
文摘Airflow sensing plays a pivotal role in numerous fields,including medicine,industry,and environmental monitoring.However,detecting bidirectional airflow using a single sensing unit poses significant challenges.In this work,a miniature airflow sensing device is introduced,utilizing a GaN optical chip integrated with a biomimetic hair structure.The sensing device comprises a monolithic GaN chip that handles both light emission and detection.The biomimetic hairs,constructed from nylon fibers and PDMS film,undergo structural bending in converting airflow signals into optical changes,modulating the light captured by the on-chip detector.The intensity of the airflow directly correlates with the bending extent of the biomimetic hair,facilitating the precise detection of airflow rates through changes in the photocurrent.The integrated device can measure a wide range of airflow rates from−23.87 ms^(-1) to 21.29 ms^(-1),and exhibit a rapid response time of 13 ms and a detection limit of 0.1 ms^(-1).Characterized by its compact size,fast response time,and bidirectional detection ability,the developed device holds immense potential for applications in breath detection,speech recognition,encoding information,and the realization of logic operations.
