Charge-based quantum computing using single donors in semiconductors

2003/06/30 by L. C. L. Hollenberg, Lloyd C. L. Hollenberg, A. S. Dzurak +7 · 7 citations
Computer Science · Physics and Astronomy · #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum and electron transport phenomena #cond-mat

paper · pdf · doi:10.1103/physrevb.69.113301

5 pages, 4 figures, updated version submitted to Physical Review B

arxiv created 2003/11/20 · openalex publication_date 2004/03/11 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30

Abstract

Solid-state quantum computer architectures with qubits encoded using single atoms are now feasible given recent advances in the atomic doping of semiconductors. Here we present a charge qubit consisting of two dopant atoms in a semiconductor crystal, one of which is singly ionized. Surface electrodes control the qubit and a radio-frequency single-electron transistor provides fast readout. The calculated single gate times, of order 50 ps or less, are much shorter than the expected decoherence time. We propose universal one- and two-qubit gate operations for this system and discuss prospects for fabrication and scale up.

Citations

• Coherent control of macroscopic quantum states in a single-Cooper-pair box
• Quantum Manipulations of Small Josephson Junctions
• Towards the fabrication of phosphorus qubits for a silicon quantum computer

Cited by

• Two-dimensional architectures for donor-based quantum computing
• Single-qubit operations in the double-donor structure driven by strongly detuned optical pulses
• Global control and fast solid-state donor electron spin quantum computing
• Single-spin readout for buried dopant semiconductor qubits
• Auxiliary-level-assisted operations with charge qubits in semiconductors
• Observing sub-microsecond telegraph noise with the radio frequency single electron transistor
• Experimental Hamiltonian identification for controlled two-level systems