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)
194 2018-11-08 16:00    Conformality lost file
193 2018-11-01 16:00    Direct holography from a single snapshot file
192 2018-10-26 16:00    Coexisting triple-point and nodal-line topological magnons and thermal Hall effect in pyrochlore iridates file
191 2018-10-25 16:00    Abelian and non-Abelian dark photons file
190 2018-10-24 10:30    Photonic integration of next-generation clocks and Hertz-absolute-accuarcy optical frequenncy synthesizers file
189 2018-10-19 10:00    Energy conversion processes during magnetic reconnection in a laboratory plasma file
188 2018-10-18 16:00    Applications of nonlinear optics for condensed matter researches file
187 2018-10-18 10:00    Understanding membrane protein folding using single-molecule force techniques file
186 2018-10-16 10:00    Capturing protein cluster dynamics and gene expression output in live cells file
185 2018-10-15 16:00    Universal properties of macroscopic current-carrying systems file
184 2018-10-12 16:00    Direct observation of a two-dimensional hole gas at oxide interfaces file
183 2018-10-12 14:30    Quantum Advantage in Learning Parity with Noise file
182 2018-10-11 16:00    Dirac electrons in a graphene quasicrystal file
181 2018-10-04 16:00    Engineering light absorption in an ultrathin semiconductor metafilm file
180 2018-09-20 16:00    Toward Cancer Treatment Using Terahertz Radiation: Demethylation of Cancer DNA file
179 2018-09-07 15:00    Recent developments in density functional theory: From new functionals to the nature of the chemical bond file
178 2018-09-05 16:00    Shining a light on fractional excitations file
177 2018-09-04 14:30    Ultrafast time- and angle-resolved photoemission spectroscopy (tr-ARPES) with extreme ultraviolet laser pulses file
176 2018-08-01 11:00    Future of AI: Is the brain a computer? file
175 2018-07-27 15:00    Muon g-2 in the 2HDM and MSSM: comprehensive numerical analysis and absolute maxima file