Compact optical waveform generator with digital feedback
arXiv:2411.00170 · doi:10.1103/PhysRevApplied.23.054009
Abstract
A key requirement for quantum technologies based on atoms, ions, and molecules, is the ability to realize precise phase- and amplitude-controlled quantum operations via coherent laser pulses. However, for generating pulses on the sub-microsecond timescale, the characteristics of the optical and electronic components can introduce unwanted distortions that have a detrimental effect on the fidelity of quantum operations. In this paper, we present a compact arbitrary waveform generator that integrates a double-pass acousto-optic modulator for user-specified laser amplitude and phase modulations. Additionally, the module integrates an optical heterodyne detector to extract the precise laser pulse shape in real-time. The measured pulse shape is then fed into a digital feedback loop used to estimate the complex-valued transfer function and pre-distorted input pulses. We demonstrate the performance by generating shaped laser pulses suitable for realizing quantum logic gates with durations down to 180\,ns, requiring only a small number of feedback iterations.
References in corpus (26)
- SciPy 1.0--Fundamental Algorithms for Scientific Computing in Python
- Logical quantum processor based on reconfigurable atom arrays
- Programmable quantum simulation of 2D antiferromagnets with hundreds of Rydberg atoms
- Generation and manipulation of Schrödinger cat states in Rydberg atom arrays
- Efficient Z-Gates for Quantum Computing
- Demonstration of multi-qubit entanglement and algorithms on a programmable neutral atom quantum computer
- High-fidelity parallel entangling gates on a neutral atom quantum computer
- Chopped random-basis quantum optimization
- A compact ion-trap quantum computing demonstrator
- Quantum simulation and computing with Rydberg-interacting qubits
- High-fidelity gates with mid-circuit erasure conversion in a metastable neutral atom qubit
- Optimal control methods for fast time-varying Hamiltonians
- Ultrafast energy exchange between two single Rydberg atoms on the nanosecond timescale
- Multi-qubit gates and Schrödinger cat states in an optical clock
- Improving quantum gate fidelities by using a qubit to measure microwave pulse distortions
- Time-domain characterization and correction of on-chip distortion of control pulses in a quantum processor
- A dual-species Rydberg array
- Integrated tool-set for Control, Calibration and Characterization of quantum devices applied to superconducting qubits
- Universal quantum operations and ancilla-based readout for tweezer clocks
- Spin Squeezing by Rydberg Dressing in an Array of Atomic Ensembles
- Benchmarking highly entangled states on a 60-atom analog quantum simulator
- Robust control and optimal Rydberg states for neutral atom two-qubit gates
- Calibration of Drive Non-Linearity for Arbitrary-Angle Single-Qubit Gates Using Error Amplification
- Compensating for non-linear distortions in controlled quantum systems
- Nonlinear Signal Distortion Corrections Through Quantum Sensing
- Robust phase-controlled gates for scalable atomic quantum processors using optical standing waves