New symmetric five-pulse and longer composite sequences are constructed that compensate amplitude, detuning, and duration errors for X and Hadamard gates via derivative cancellation in the Cayley-Klein parametrization and numerical infidelity minimization.
Efficient Z gates for quantum computing
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GULPS partitions two-qubit unitary synthesis into depth-2 segments solved via linear programming over Littlewood-Richardson inequalities followed by least-squares optimization, yielding faster and lower-cost decompositions than prior synthesizers on heterogeneous ISAs.
Except for a few specific cases, digital-analog quantum computation is disadvantageous compared to digital quantum computation based on scaling analysis across three quantum algorithms.
Pulse-optimized implementations of single- and double-qubit excitations in VQE reduce runtimes by up to 15.3 times on silicon spin-qubit processors.
A one-bit feedback protocol estimates a superconducting qubit's bistable frequency from a single shot and stabilizes gate performance with 77% error reduction at 136 kHz bandwidth.
citing papers explorer
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Composite quantum gates simultaneously compensated for multiple errors
New symmetric five-pulse and longer composite sequences are constructed that compensate amplitude, detuning, and duration errors for X and Hadamard gates via derivative cancellation in the Cayley-Klein parametrization and numerical infidelity minimization.
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GULPS: Two-Qubit Gate Synthesis via Linear Programming for Heterogeneous Instruction Sets
GULPS partitions two-qubit unitary synthesis into depth-2 segments solved via linear programming over Littlewood-Richardson inequalities followed by least-squares optimization, yielding faster and lower-cost decompositions than prior synthesizers on heterogeneous ISAs.
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Benchmarking Digital-Analog Quantum Computation
Except for a few specific cases, digital-analog quantum computation is disadvantageous compared to digital quantum computation based on scaling analysis across three quantum algorithms.
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Pulse-optimised circuit elements for scalable and noise-resilient quantum chemistry
Pulse-optimized implementations of single- and double-qubit excitations in VQE reduce runtimes by up to 15.3 times on silicon spin-qubit processors.
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Operating a bistable qubit
A one-bit feedback protocol estimates a superconducting qubit's bistable frequency from a single shot and stabilizes gate performance with 77% error reduction at 136 kHz bandwidth.