Robust phase-controlled gates for scalable atomic quantum processors using optical standing waves

Abstract

A simple scheme is presented for realizing robust optically controlled quantum gates for scalable atomic quantum processors by driving the qubits with optical standing waves. Atoms localized close to the antinodes of the standing wave can realize phase-controlled quantum operations that are potentially more than an order of magnitude less sensitive to the local optical phase and atomic motion than corresponding travelling wave configurations. The scheme is compatible with robust optimal control techniques and spatial qubit addressing in atomic arrays to realize phase controlled operations without the need for tight focusing and precise positioning of the control lasers. This will be particularly beneficial for quantum gates involving Doppler sensitive optical frequency transitions and provides an all optical route to scaling up atomic quantum processors.

Accepted in Quantum

References in corpus (9)

• Tackling Systematic Errors in Quantum Logic Gates with Composite Rotations
• Ytterbium nuclear-spin qubits in an optical tweezer array
• Universal gate operations on nuclear spin qubits in an optical tweezer array of ${}^{171}$Yb atoms
• Long-lived Bell states in an array of optical clock qubits
• Single-Atom Addressing in Microtraps for Quantum-State Engineering using Rydberg Atoms
• The SMART protocol -- Pulse engineering of a global field for robust and universal quantum computation
• Analyzing the Rydberg-based omg architecture for ${}^{171}$Yb nuclear spins
• Implementation of the SMART protocol for global qubit control in silicon
• Time-Optimal Two- and Three-Qubit Gates for Rydberg Atoms

Cited by in corpus (2)

• Pound-Drever-Hall Feedforward: Laser Phase Noise Suppression beyond Feedback
• Compact optical waveform generator with digital feedback