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Reducing the measurement errors in nonadiabatic holonomic quantum computers

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 64-70页

作者： guo-fu Xu Department of Physics Shandong University

Nonadiabatic holonomic quantum computers serve as the physical platform for nonadiabatic holonomic quantum *** quantum computation has entered the noisy intermediate-scale era, building accurate intermediate-scale nonadiabatic holonomic quantum computers is clearly necessary. Given that measurements are the sole means of extracting information, they play an indispensable role in nonadiabatic holonomic quantum computers. Accordingly, developing methods to reduce measurement errors in nonadiabatic holonomic quantum computers is of great importance. However, while much attention has been given to the research on nonadiabatic holonomic gates, the research on reducing measurement errors in nonadiabatic holonomic quantum computers is severely lacking. In this study, we propose a measurement error reduction method tailored for intermediate-scale nonadiabatic holonomic quantum computers. The reason we say this is because our method can not only reduce the measurement errors in the computer but also be useful in mitigating errors originating from nonadiabatic holonomic gates. Given these features,our method significantly advances the construction of accurate intermediate-scale nonadiabatic holonomic quantum computers.

关键词： quantum holonomy quantum computation measurement errors

Complete Fracture of a Chimney Stent in the Left Common Carotid Artery after Thoracic Endovascular Aortic Repair for Thoracic Aneurysm

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Chinese Medical Journal 2015年第23期128卷 3264-3265页

作者： Bao-Lei guo wei-guo fu Da-Qiao guo Zhen-Yu Shi Department of Vascular Surgery Zhongshan Hospital Fudan University Institute of Vascular Surgery Shanghai 200032 China

To the Editor： We reported a rare complication after thoracic endovascular aortic repair （TEVAR） with a chimney stent.A 68-year-old patient with no history presented to our hospital history of chest or back pain for evaluation of the endograft for TEVAR of a thoracic aneurysm approximately 4 years previously. Computed tomography angiography showed significant type Ia endoleak and the endograft had severe compression and migration [Figure 1a].

关键词：背痛动脉瘤颈总动脉评价研究体层摄影术胸部血管造影术一氧化氮

Thoracic endovascular aortic repair for type B aortic dissection patients: 11-year experience from a Chinese Tertiary Center

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Chinese Medical Journal 2021年第8期134卷 971-972页

作者： Yuan-Qing Kan Da-Qiao guo Yi Si wei-guo fu Department of Vascular Surgery Zhongshan HospitalFudan UniversityShanghai 200032China.

Thoracic endovascular aortic repair(TEVAR)has been gradually considered as the mainstream therapy for type B aortic dissection(TBAD),especially for complicated acute TBAD,[1]due to its minimally invasive nature and satisfactory clinical ***,our knowledge of aortic dissection and endovascular treatment is primarily derived from western registries including the International Registry of Acute Aortic Dissection(IRAD)and Vascular Quality Initiative(VQI),which includes few Asian TBAD patients without any Chinese ***,we report a long-term single-center experience of TBAD patients who underwent TEVAR in a Chinese high-volume tertiary *** preliminary results would provide useful insight and enhances our understanding of this disease in the Chinese population.

关键词： dissection patients aortic

Effect of Intravascular Ultrasound-assisted Thoracic Endovascular Aortic Repair for ＂Complicated＂ Type B Aortic Dissection

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Chinese Medical Journal 2015年第17期128卷 2322-2329页

作者： Bao-Lei guo Zhen-Yu Shi Da-Qiao guo Li-Xin Wang Xiao Tang wei-Miao Li wei-guo fu Department of Vascular Surgery Zhongshan Hospital Fudan University Shanghai 200032 China Institute of Vascular Surgery Fudan University Shanghai 200032 China

Background： Intravascular ultrasound （IVUS） examination can provide useful information during endovascular stent graft repair. However, its actual clinical utility in thoracic endovascular aortic repair （TEVAR） for type B aortic dissection （type B-AD） remains unclear, especially in complicated aortic dissection. We evaluated the effect of IVUS as a complementary tool during TEVAR. Methods： From September 2011 to April 2012, we conducted a prospective cohort study of 47 consecutive patients with ＂complicated＂ type B-AD diagnosed. We divided the patients into two groups： 1VUS-assisted TEVAR group and TEVAR using angiography alone group. The general procedure of TEVAR was performed. We evaluated the per±operative and follow-up events. Patient demographics, comorbidities, preoperative images, dissection morphology, details of operative strategy, intraoperative events, and postoperative course were recorded. Results： A total of 47 patients receiving TEVAR were enrolled. Among them （females, 8.51%; mean age, 57.38 i 13.02 years）, 13 cases （27.66%） were selected in the IVUS-assisted TEVAR group, and 34 were selected in the TEVAR group. All patients were symptomatic. The average diameter values of IVUS measurements in the landing zone were greater than those estimated by computed tomography angiography （31.82 ± 4.21 mm vs. 30.64 ± 4.13 ram, P 〈 0.001）. The technique success rate was 100%. Among the postoperative outcomes, statistical differences were only observed between the IVUS-assisted TEVAR group and TEVAR group for total operative time and the amount of contrast used （P = 0.013 and P 〈 0.001, respectively）. The follow-up ranged from 15 to 36 months for the IVUS-assisted TEVAR group and from 10 to 35 months for the TEVAR group （P = 0.646）. The primary endpoints were no statistical difference in the two groups. Conclusions： Intraoperative IVUS-assisted TEVAR is clinically feasible and safe. For the endovascular repair of ＂complicated＂ type B-AD, IVUS may be helpful for

关键词： Aortic Dissection Endovascular Intravascular Ultrasound Stent Repair

Management of Acute Lower Extremity Thrombosis Associated with Bilateral Popliteal Aneurysms Using Combined Thrombolytic Therapy and Stent Graft Repair

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Chinese Medical Journal 2015年第4期128卷 564-566页

作者： Bao-Lei guo wei-guo fu Zhen-Yu Shi Li-Xin Wang Da-Qiao guo Department of Vascular Surgery Zhongshan Hospital Fudan University Institute of Vascular Surgery Shanghai 200032 China

To the Editor：This is a brief clinical report on different endovascular procedures in the treatment of popliteal artery aneurysms （PAAs）.A 75-year-old man presented at the vascular clinic with progressive left lower limb pain at rest associated with coolness,pain,and *** medical history was significant for hypertension and *** femoral and popliteal pulsations were only felt in the left ***,pallor,paresthesia,delayed capillary refilling,and color changes were noted in the left limb together with rest *** ultrasound was performed and an embolization （Rutherford Grade 2b） and bilateral PAAs were found,which on computed tomography angiogram （CTA） measured 62 mm and 82 mm with the maximum diameters in the right and left popliteal artery,*** was found in both aneurysm sacs [Figure 1 a and b].Thromboembolism from the left PAA could be seen in the distal *** potentially associated aneurysms were excluded by magnetic resonance *** erythrocyte sedimentation rate and C-reactive protein were moderately elevated,and thrombophilia profile was negative,and history for any orogenital ulcers was negative.

关键词： Popliteal Artery Aneurysms Endovascular Therapy Stent Grafts

Estimates on Blow-up Rate of Nonlinear Parabolic Systems with Nonlinear Boundary Conditions

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Chinese Quarterly Journal of Mathematics 2005年第4期20卷 401-405页

作者： LIU wei-ling LI guo-fu Department of Mathematics Zhengzhou Teacher＇s College Zhengzhou 450044 China

In this paper, the estimate on blow-up rate of the following nonlinear parabolic system is considered：{ut=uxx＋u^l 11v^l 12,vt=vxx＋u^l21v^l22,（x,t）∈（0,1）×（0,T）,ux（0,t）=0,vx（0,t）=0,t∈（0,T）,ux（1,t）=（u^p11v^p12）（1,t）,vx（1,t）=（u^p21v^p22）（1,t）,t∈（0,T）,u（x,0）=u0（x）,v（x,0）=v0（x）,x∈（0,1）We will prove that there exist two positive constants such that：c≤max x∈[0,1]u（x,t）（T-t）^r（l1-1）≤C,0〈t〈T,c≤max x∈[0,1] v（x,t）（T-t）^1/（t1-1）≤C,0〈t〈*** l1=l21α/α2＋l22,r=α1/α2〉1,α1≤α2〈0.

关键词： nonlinear boundary condition nonlinear parabolic system blow-up rate

Treatment of popliteal artery aneurysm-induced emergencies

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Chinese Medical Journal 2020年第1期133卷 94-96页

作者： Gang Fang Bin Chen Da-Qiao guo Xin Xu Jun-Hao Jiang Zhen-Yu Shi Zhi-Hui Dong wei-guo fu Department of Vascular Surgery Zhongshan HospitalFudan UniversityShanghai 200032China Institute of Vascular Surgery Fudan UniversityShanghai 200032China.

To the Editor:Popliteal artery aneurysms(PAAs)account for nearly 70%of peripheral artery aneurysms.[1]Most PAAs are *** PAAs typically present with lower extremity ischemia caused by acute or chronic thrombosis and distal *** of PAAs and popliteal artery pseudoaneurysms are rarely reported.[2]In this study,PAA-induced emergencies are classified as acute hemorrhagic and ischemic *** with uncomplicated PAAs with almost no limb loss and perioperative mortality,these acute complications can make management of PAAs extremely challenging,even for an experienced vascular surgeon,as evidenced by a significant risk of amputation and death in previous reports.

关键词： aneurysm acute mortality

Long-term results of extensive aortoiliac occlusive disease (EAIOD) treated by endovascular therapy and risk factors for loss of primary patency

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Chinese Medical Journal 2021年第8期134卷 913-919页

作者： Xiao-Lang Jiang Yun Shi Bin Chen Jun-Hao Jiang Tao Ma Chang-Po Lin Da-Qiao guo Xin Xu Zhi-Hui Dong wei-guo fu Institute of Vascular Surgery Department of Vascular SurgeryZhongshan HospitalFudan UniversityCenter for Vascular Surgery and Wound CareJinshan HospitalFudan UniversityShanghai 201508China

Background::Although endovascular therapy has been widely used for focal aortoiliac occlusive disease(AIOD),its performance for extensive AIOD(EAIOD)is not fully *** aimed to demonstrate the long-term results of EAIOD treated by endovascular therapy and to identify the potential risk factors for the loss of primary ***::Between January 2008 and June 2018,patients with a clinical diagnosis of the 2007 TransAtlantic Inter-Society Consensus II(TASC II)C and D AIOD lesions who underwent endovascular treatment in our institution were ***,diagnosis,procedure characteristics,and follow-up information were *** analysis was used to identify the correlation between the variables and the primary patency.A multivariate logistic regression model was used to identify the independent risk factors associated with primary ***-and 10-year primary and secondary patency,as well as survival rates,were calculated by Kaplan-Meier ***::A total of 148 patients underwent endovascular treatment in our *** these,39.2%were classified as having TASC II C lesions and 60.8%as having TASC II D *** technical success rate was 88.5%.The mean follow-up time was 79.2±29.2 *** and secondary patency was 82.1%and 89.4%at 5 years,and 74.8%and 83.1%at 10 years,*** 5-year survival rate was 84.2%.Compared with patients without loss of primary patency,patients with this condition showed significant differences in age,TASC II classification,infrainguinal lesions,critical limb ischemia(CLI),and *** logistic regression analysis showed age<61 years(adjusted odds ratio[aOR]:6.47;95%CI:1.47-28.36;P=0.01),CLI(aOR:7.81;95%CI:1.92-31.89;P=0.04),and smoking(aOR:10.15;95%CI:2.79-36.90;P<0.01)were independent risk factors for the loss of primary ***::Endovascular therapy was an effective treatment for EAIOD with encouraging patency and survival ***<61 years,CLI,and smoking

关键词： Critical limb ischemia Endovascular therapy Extensive aortoiliac occlusive disease Mortality Primary patency Risk factors

Quantum public-key crypto via EPR pairs

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 58-63页

作者： Xiang-Qun fu Hong-wei Li Jian-Hong Shi Tan Li Wan-Su Bao Henan Key Laboratory of Quantum Information and Cryptography Information Engineering University Synergetic Innovation Center of Quantum Information and Quantum Physics University of Science and Technology of China

With the development of quantum computing technology, quantum public-key cryptography is gradually becoming an alternative to the existing classical public-key cryptography. This paper designs a quantum trapdoor one-way function via EPR pairs and quantum measurements. Based on this, a new quantum public-key cryptosystem is presented, which offers forward security,and can resist the chosen-plaintext attack and chosen-ciphertext attack. Compared with the existing quantum public-key cryptos,eavesdropping can be automatically detected in this new quantum public-key cryptosystem under a necessary condition, which is also detailed in the paper.

关键词： quantum public-key crypto trapdoor one-way function EPR pairs