1992/03/05 by Susan Clark, Susan M. Clark, Kai‐Mei C. Fu +5 · 3 citations
Arts and Humanities · Computer Science · Physics and Astronomy · #Astronomy #Atomic physics #Condensed matter physics #Electron #Femtosecond #Historical Astronomy and Related Studies #Historical, Religious, and Philosophical Studies #History and Developments in Astronomy #Laser #Magnetic field #Physics #Political science #Quantum #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum computer #Quantum mechanics #Quantum optics and atomic interactions #Qubit #Spins #Ultrashort pulse #Zeeman effect #quant-ph
paper · pdf · doi:10.1103/physrevlett.99.040501
4 pages, 4 figures, introduction is clarified, the section on two-qubit gates was expanded and much more detail about gate fidelities is given, figures were modified, one figure replaced with a figure showing gate fidelities for relevant parameters
openalex publication_date 1992/03/05 · arxiv created 2007/06/11 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/04/28
We describe a fast quantum computer based on optically controlled electron spins in charged quantum dots that are coupled to microcavities. This scheme uses broadband optical pulses to rotate electron spins and provide the clock signal to the system. Nonlocal two-qubit gates are performed by phase shifts induced by electron spins on laser pulses propagating along a shared waveguide. Numerical simulations of this scheme demonstrate high-fidelity single-qubit and two-qubit gates with operation times comparable to the inverse Zeeman frequency.