visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2022-05-13 16:00 
연사  
장소 자연과학동(E6-2) 1st fl. #1323 

SRC Seminar

 

 

High-fidelity iToffoli gate for fixed-frequency superconducting qubits

 

Dr. Yosep Kim

Center for Quantum Information, KIST

 

May. 13 (Fri.), 04:00 PM

E6-2. 1st fl. #1323

 

 

 

 

 

Abstract:

The development of noisy intermediate-scale quantum (NISQ) devices has extended the scope of executable quantum circuits with high-fidelity single- and two-qubit gates. Equipping NISQ devices with three-qubit gates will enable the realization of more complex quantum algorithms and efficient quantum error correction protocols with reduced circuit depth. Several three-qubit gates have been implemented for superconducting qubits, but their use in gate synthesis has been limited due to their low fidelity. In this talk, I explain how to implement a high-fidelity iToffoli gate for fixed-frequency superconducting qubits. As with the Toffoli gate, this three-qubit gate can be used to perform universal quantum computation. The iToffoli gate can be implemented by simultaneously applying microwave pulses to a linear chain of three qubits, revealing a process fidelity as high as 98.26(2)%. Moreover, I numerically show that this gate scheme can produce additional three-qubit gates which provide more efficient gate synthesis than the Toffoli and Toffoli gates. This work not only brings a high-fidelity iToffoli gate to current superconducting quantum processors but also opens a pathway for developing multi-qubit gates based on two-qubit interactions.

 

 

 

 Contact: SunYoung Choi, (sun.0@kaist.ac.kr)

Center for Quantum Coherence in Condensed Matter, KAIST

번호 날짜 연사 제목
공지 2025-02-24 16:00    2025년 봄학기 콜로키움 안내
공지 2025-02-27 16:00    2025년 봄 물리학과 특별세미나 (광학/응집물리 분야)
605 2010-02-14 16:00    Physics Colloquium - 2011 Spring file
604 2023-04-14 12:00    (응집물리 세미나)Exotic quantum phenomena in two-dimensional materials file
603 2023-05-12 11:00    (응집물리 세미나)Interlayer conductivity and plasmon in weakly coupled layered systems
602 2022-05-26 16:00    (광학분야 특별세미나)Topological photonic devices
601 2023-06-01 16:00    (광학분야 세미나)Quantum sensing using a squeezed light from hot Rb vapor
600 2015-03-09 16:00    Physics Colloquium : 2015 Spring file
599 2022-03-31 16:00    (광학분야 특별세미나)Ultrafast time-resolved spectroscopy in topological materials
598 2023-03-30 16:00    (광학분야 세미나)Scalable quantum entanglement in trapped-ions based quantum computer
597 2022-08-17 11:00    Robust Hamiltonian Engineering of Large Quantum Systems (큰 양자시스템의 견고한 해밀토니안 엔지니어링)
596 2010-02-08 16:00    Physics Ciolloquium : 2010 Spring file
595 2009-10-21 16:00    Interdimensional Universality of Dynamic Interfaces
594 2025-05-23 11:00  천상모 교수(한양대학교)  Superconductivity in Topological Materials file
593 2025-04-28 16:00  지명국 (연세대 천문우주학과)  Galaxy Cluster Collisions as Cosmic Laboratories for Dark Matter file
592 2010-09-06 16:00    Physics Colloquium : 2010 Fall file
591 2025-04-11 11:00  조상연 박사(Wellman Center for Photomedicine)  Semiconductor Nanolaser Particles: The Building Blocks of Next-Generation, Highly Multiplexed Photonic Systems file
590 2017-03-21 16:00    Spring 2017: Physics Seminar Serises file
589 2025-04-04 12:00  조길영 교수(KAIST)  Theoretical Kaleidoscope of Quantum Material Research: From Quantum Field Theory and Quantum Information to Future Devices file
588 2022-05-16 16:00    Design synthetic topological matter with atoms and lights
587 2020-10-15 16:00    Towards resource-efficient and fault-tolerant quantum computation with nonclassical light
586 2022-04-25 16:00    Ultrafast electron beam, a tool to explore the nanoscopic world of materials(우리말강의)