Electrical engineering

Physics

Topology (electrical circuits)

Qubit

Quantum error correction

Algorithm

Electronic circuit

Quantum circuit

Engineering

Controlled NOT gate

Electronic engineering

Pulse (music)

Coherence (philosophical gambling strategy)

Computer science

Quantum computer

Quantum mechanics

Coherence time

Quantum gate

Telecommunications

Quantum

Detector

Physical Review Research

We show a pulse-efficient circuit transpilation framework for noisy quantum hardware. This is achieved by scaling cross-resonance pulses and exposing each pulse as a gate to remove redundant single-qubit operations with the transpiler. Crucially, no additional calibration is needed to yield better results than a CNOT-based transpilation. This pulse-efficient circuit transpilation therefore enables a better usage of the finite coherence time without requiring knowledge of pulse-level details from the user. As demonstration, we realize a continuous family of cross-resonance-based gates for SU(4) by leveraging Cartan's decomposition. We measure the benefits of a pulse-efficient circuit transpilation with process tomography and observe up to a 50% error reduction in the fidelity of ${R}_{ZZ}(\ensuremath{\theta})$ and arbitrary SU(4) gates on IBM Quantum devices. We apply this framework for quantum applications by running circuits of the quantum approximate optimization algorithm applied to MAXCUT. For an 11-qubit nonhardware native graph, our methodology reduces the overall schedule duration by up to 52% and errors by up to 38%.

Pulse-efficient circuit transpilation for quantum applications on cross-resonance-based hardware