Exact CNOT gates with a single nonlocal rotation for quantum-dot qubits

2015/05/31 by Arijeet Pal, Emmanuel I. Rashba, É. I. Rashba +1 · 17 citations
Computer Science · Engineering · Mathematics · Physics and Astronomy · #Advancements in Semiconductor Devices and Circuit Design #Capacitive coupling #Controlled NOT gate #Coupling (piping) #Mathematics #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum and electron transport phenomena #Quantum circuit #Quantum error correction #Quantum gate #Quantum mechanics #Qubit #Superconducting quantum computing #Topology (electrical circuits) #cond-mat.mes-hall #quant-ph

paper · pdf · doi:10.1103/physrevb.92.125409

published in Physical Review B 92(12) (American Physical Society) · 11 pages, 4 figures, Added 2 references

arxiv created 2015/06/10 · openalex publication_date 2015/09/09 · arxiv updated 2016/01/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

This theoretical study provides an exact implementation of the CNOT two-qubit gate operation between capacitively coupled exchange-only qubits defined by three electrons in triple quantum dots. The authors show that the CNOT gate can be implemented by tuning three parameters: the two single-qubit exchange splittings, and the duration of the pulse.

Citations

• Nonlocal Properties of Two-Qubit Gates and Mixed States, and the Optimization of Quantum Computations
• Universal Quantum Computation with Spin-1/2Pairs and Heisenberg Exchange
• Geometric theory of nonlocal two-qubit operations
• Driven coherent oscillations of a single electron spin in a quantum dot
• Entanglement of a Pair of Quantum Bits
• Coherent Manipulation of Coupled Electron Spins in Semiconductor Quantum Dots
• Spins in few-electron quantum dots

Cited by

• Three-electron spin qubits