visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2022-05-13 16:00 
일시 May. 13 (Fri.), 04:00 PM 
장소 자연과학동(E6-2) 1st fl. #1323 
연사 Dr. Yosep Kim(Center for Quantum Information, KIST) 

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 장소 제목
246 2016-05-13 13:30  E6. #1501(1st fl.)  Aperiodic crystals in low dimensions
245 2018-04-11 16:00  #1323 (E6-2, 1st fl.)  Non-Gaussian states of multimode light generated via hybrid quantum information processing file
244 2017-05-12 13:30  E6-2. 1st fl. #1323  Topological Dirac insulator
» 2022-05-13 16:00  자연과학동(E6-2) 1st fl. #1323  High-fidelity iToffoli gate for fixed-frequency superconducting qubits file
242 2022-06-10 11:00  Online seminar  Record-quality two-dimensional electron systems file
241 2018-04-11 13:30  #1323 (E6-2, 1st fl.)  Probing 3D Structure and Physical Properties of Materials at the Single-Atom Level file
240 2018-10-15 16:00  #1323, E6-2  Universal properties of macroscopic current-carrying systems file
239 2016-09-02 16:00  E6-2(1st fl) #1323  Quantum Electrical Transport in Topological Insulator Nanowires
238 2016-09-02 14:30  E6-2(1st fl.), #1323  Nanoscale Thermal Physics: Seebeck Effect and Nanoscale Friction
237 2023-12-14 16:00  CAPP Seminar Room C303, Creation Hall, KAIST Munji Campus  Superconducting qubits for large-scale quantum computers file
236 2023-04-13 11:00  Zoom  [High Energy Theory Seminar]Noninvertible Gauss Law and Axions
235 2015-12-01 16:00  E6-2, #1323  Introducing extra dimensions to spectroscopic studies of advanced quantum materials
234 2015-11-10 16:00  E6-2, #1323  Rapid heating of matter using high power lasers
233 2022-11-10 16:00  E6-2. 1st fl. #1323  Probing the Origin of Cosmic Infrared Background and Future Prospects with SPHEREx
232 2023-02-28 11:00  E6 Room(#1322)  Topotactic redox engineering toward novel material file
231 2018-10-16 10:00  #1323, E6-2  Capturing protein cluster dynamics and gene expression output in live cells file
230 2018-06-18 10:00  E6-2. 2nd fl. #2502  Rydberg electromagnetically induced transparency and microwave-to-optical conversion using Rydberg atoms file
229 2019-03-29 16:00  E6-2. 1st fl. #1323  Coherent Quantum Control and Magnetism on atoms – Trapped ion and ESR STM file
228 2023-09-26 16:00  E6-2, #2502  [High Energy Theory Seminar]A new step in interacting dark sector cosmologies
227 2016-03-11 16:00  E6-2. 1st fl. #1501  Jan. Switching handedness of of chiral solitons in Z4 topological insulators