6 papers · 1 filter
Continuous-time noise mitigation in analogue quantum simulation
Gabriele Bressanini, Yue Ma, Hyukjoon Kwon +1
Analogue quantum simulators offer a promising route to explore quantum many-body dynamics beyond classical reach in the near term. However, their vulnerability to noise limits the…
Quantum observables over time for information recovery
Gabriele Bressanini, Farhan Hanif, Hyukjoon Kwon +1
We introduce the concept of quantum observables over time (QOOT), an operator that jointly describes two observables at two distinct time points, as a dual of the quantum state ove…
Quantum error cancellation in photonic systems -- undoing photon losses
Adam Taylor, Gabriele Bressanini, Hyukjoon Kwon +1
Real photonic devices are subject to photon losses that can decohere quantum information encoded in the system. In the absence of full fault tolerance, quantum error mitigation tec…
Multi-parameter quantum estimation of single- and two-mode pure Gaussian states
Gabriele Bressanini, Marco G. Genoni, M. S. Kim +1
We discuss the ultimate precision bounds on the multiparameter estimation of single- and two-mode pure Gaussian states. By leveraging on previous approaches that focused on the est…
Gaussian boson sampling with click-counting detectors
Gabriele Bressanini, Hyukjoon Kwon, M. S. Kim
Gaussian boson sampling constitutes a prime candidate for an experimental demonstration of quantum advantage within reach with current technological capabilities. The original prop…
Gaussian boson sampling validation via detector binning
Gabriele Bressanini, Benoit Seron, Leonardo Novo +2
Gaussian boson sampling (GBS), a computational problem conjectured to be hard to simulate on a classical machine, has been at the forefront of recent years' experimental and theore…