#  Seminar: Liang Jiang (University of Chicago): "Path-Independent Quantum Gates" 

 



####  calendar\_today Date and Time 

 **October 18, 2022** 

 09:30AM - 09:30AM EDT 

####  pin\_drop Location 

 **https://harvard.zoom.us/j/779283357?pwd=MitXVm1pYUlJVzZqT3lwV2pCT1ZUQT09**  



 

 



 

   ![Liang Jiang](/sites/g/files/omnuum6611/files/styles/hwp_1_1__360x360_scale/public/mathpicture/files/liang_jiang.jpg?itok=Jl0RBW0_) 

 

  
Speaker: Liang Jiang (University of Chicago)  
**Title:** Path-Independent Quantum Gates  
**Abstract:**  Ancilla systems are often indispensable to universal control of a nearly isolated quantum system. However, ancilla systems are typically more vulnerable to environmental noise, which limits the performance of such ancilla-assisted quantum control. To address this challenge of ancilla-induced decoherence, we propose a general framework that integrates quantum control and quantum error correction, so that we can achieve robust quantum gates resilient to ancilla noise. We introduce the path independence criterion for fault-tolerant quantum gates against ancilla errors. As an example, a path-independent gate is provided for superconducting circuits with a hardware-efficient design.  
 

 

 

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