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)
314 2020-10-16 14:30    Nanoscale magnetic resonance detection towards nano MRI file
313 2020-10-16 16:00    Hidden room-temperature ferroelectricity in CaTiO3 revealed by a metastable octahedral rotation pattern file
312 2020-10-23 14:00    Plasmon spectroscopy of low-dimensional superconductors in fluctuating regime file
311 2020-11-12 16:00    2020 가을학기 광학분야 특별세미나
310 2020-11-17 12:00    Quantum- & Nano-Photonics" 세미나 시리즈 file
309 2020-11-20 14:30    Lumpy Cooper pairs in an iron-based superconductor
308 2020-11-20 16:00    Coherent control of field gradient induced quantum dot spin qubits
307 2020-11-26 16:00    2020 가을학기 광학분야 특별세미나(Light Engineering Beyond the Diffraction Limit)
306 2020-12-02 10:00    Recent progress in Axion Dark Matter eXperiment (ADMX) technology file
305 2020-12-09 10:00    Searching for the QCD axion with the ARIADNE experiment file
304 2020-12-10 13:55    Consistency of Boltzmann equation and light dark matter from inflaton decay
303 2020-12-11 14:30    Antisymmetric interlayer exchange coupling in magnetic multilayers
302 2020-12-11 16:00    Atomic and electronic reconstruction at van der Waals interface in twisted 2D materials
301 2020-12-23 10:00    Online workshop for Quantitative Phase Imaging file
300 2021-01-28 15:00    Topological Transport of Deconfined Hedgehogs in Magnets file
299 2021-01-28 18:00    Quantum metamaterials: concept, theory, prototypes and possible applications file
298 2021-02-02 14:30    Quantum- & Nano-Photonics 세미나(Integrated Nanophotonics with Metamaterials, Microcomb, and Atomic Systems) file
297 2021-02-15 17:00    Magnetic Cluster Octupole Domain evolutation in chiral antiferromagnets file
296 2021-02-17 09:00    석학 대중 강연 및 강의 시리즈 file
295 2021-03-02 16:00    Sensitive terahertz detection with graphene-based transistors file