Boosting quantum amplitude exponentially in variational quantum algorithms
Kyaw T, Soley M, Allen B, Bergold P, Sun C, Batista V, Aspuru-Guzik A. Boosting quantum amplitude exponentially in variational quantum algorithms. Quantum Science And Technology 2023, 9: 01lt01. DOI: 10.1088/2058-9565/acf4ba.Peer-Reviewed Original ResearchVariational quantum algorithmsQuantum algorithmsNoisy intermediate-scale quantum computersIntermediate-scale quantum computersImaginary time evolutionQuantum statesClassical optimization algorithmsGlobal optimization methodGround-state optimizationInitial quantum stateNon-vanishing probabilityQuantum amplitudesQuantum computerTransmon qubitsNumerical experimentsUnique maximumOptimization algorithmInitial wavefunctionChemical physicsPolynomial numberState optimizationAmplitude amplificationTime evolutionGeneral frameworkRange of algorithmsSpectral kissing and its dynamical consequences in the squeeze-driven Kerr oscillator
Chávez-Carlos J, Lezama T, Cortiñas R, Venkatraman J, Devoret M, Batista V, Pérez-Bernal F, Santos L. Spectral kissing and its dynamical consequences in the squeeze-driven Kerr oscillator. Npj Quantum Information 2023, 9: 76. PMID: 38665256, PMCID: PMC11041765, DOI: 10.1038/s41534-023-00745-1.Peer-Reviewed Original ResearchExcited-state quantum phase transitionsQuantum phase transitionQuantum information processingFundamental physics questionsTime-ordered correlatorsPhase transitionDynamical consequencesCold atomsTransmon qubitsQuantum computerIon trapKerr oscillatorsPhysics questionsExcited statesCircuit platformPeriodic revivalsEffective HamiltonianTransmonNonlinear oscillatorsQubitsInformation processingOscillatorSlow evolutionTransitionEngineering implementation