High-fidelity quantum control by polychromatic pulse trains

Abstract

We introduce a quantum control technique using polychromatic pulse sequences (PPS), consisting of pulses with different carrier frequencies, i.e. different detunings with respect to the qubit transition frequency. We derive numerous PPS, which generate broadband, narrowband, and passband excitation profiles for different target transition probabilities. This makes it possible to create high-fidelity excitation profiles which are either (i) robust to deviations in the experimental parameters, which is attractive for quantum computing, or (ii) more sensitive to such variations, which is attractive for cross talk elimination and quantum sensing. The method is demonstrated experimentally using one of IBM's superconducting quantum processors, in a very good agreement between theory and experiment. These results demonstrate both the excellent coherence properties of the IBM qubits and the accuracy, robustness and flexibility of the proposed quantum control technique. They also show that the detuning is as efficient control parameter as the pulse phase that is commonly used in composite pulses. Hence the method opens a variety of perspectives for quantum control in areas where phase manipulation is difficult or inaccurate.

arXiv comment5 pages, 4 figures

References in corpus (23)

• Quantum computing with trapped ions
• Realization of the quantum Toffoli gate with trapped ions
• Experimental fault-tolerant universal quantum gates with solid-state spins under ambient conditions
• Composite pulses for robust universal control of singlet-triplet qubits
• Qiskit Pulse: Programming Quantum Computers Through the Cloud with Pulses
• Correction of Arbitrary Errors in Population Inversion of Quantum Systems by Universal Composite Pulses
• Arbitrarily Accurate Pulse Sequences for Robust Dynamical Decoupling
• Error-resistant Single Qubit Gates with Trapped Ions
• Noise-resistant control for a spin qubit array
• Robust quantum gates for singlet-triplet spin qubits using composite pulses
• Robust and resource-efficient microwave near-field entangling ${}^9$Be${}^{+}$ gate
• Composite-pulse magnetometry with a solid-state quantum sensor
• Composite pulses for interferometry in a thermal cold atom cloud
• Progress and perspectives on composite laser-pulses spectroscopy for high-accuracy optical clocks
• Error Compensation of Single-Qubit Gates in a Surface Electrode Ion Trap Using Composite Pulses
• Randomized benchmarking of barrier versus tilt control of a singlet-triplet qubit
• Accurate Microwave Control and Real-Time Diagnostics of Neutral Atom Qubits
• Spatially uniform single-qubit gate operations with near-field microwaves and composite pulse compensation
• Dynamically corrected gates for an exchange-only qubit
• Experimental demonstration of composite stimulated Raman adiabatic passage
• Detuning-modulated composite pulses for high-fidelity robust quantum control
• Composite pulses for high-fidelity population inversion in optically dense, inhomogeneously broadened atomic ensembles
• Robust high-fidelity coherent control of two-state systems by detuning pulses

Cited by in corpus (10)

• Introduction to Theoretical and Experimental aspects of Quantum Optimal Control
• Protecting Quantum Information via Destructive Interference of Correlated Noise
• Supervised learning for robust quantum control in composite-pulse systems
• Optimal control and ultimate bounds of 1:2 nonlinear quantum systems
• Pulse shape effects in qubit dynamics demonstrated on an IBM quantum computer
• Three-state coherent control using narrowband and passband sequences
• Ultrahigh-fidelity composite quantum phase gates
• Enhancing qubit readout with Bayesian Learning
• Robust transitionless quantum driving: Concatenated approach
• Efficiency of optimal control for noisy spin qubits in diamond