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quant-ph2020★ 31 cited
Quantum oscillator noise spectroscopy via displaced cat states
Alistair R. Milne, Cornelius Hempel, Li Li +5
Quantum harmonic oscillators are central to many modern quantum technologies. We introduce a method to determine the frequency noise spectrum of oscillator modes through coupling t…
quant-ph2020★ 13 cited
Investigating Quantum Approximate Optimization Algorithms under Bang-bang Protocols
Daniel Liang, Li Li, Stefan Leichenauer
The quantum approximate optimization algorithm (QAOA) is widely seen as a possible usage of noisy intermediate-scale quantum (NISQ) devices. We analyze the algorithm as a bang-bang…