Probabilistic simulation of mesoscopic "Schrödinger cat" states

Abstract

We carry out probabilistic phase-space sampling of mesoscopic Schrödinger cat quantum states, demonstrating multipartite Bell violations for up to 60 qubits. We use states similar to those generated in photonic and ion-trap experiments. These results show that mesoscopic quantum superpositions are directly accessible to probabilistic sampling, and we analyze the properties of sampling errors. We also demonstrate dynamical simulation of super-decoherence in ion traps. Our computer simulations can be either exponentially faster or slower than experiment, depending on the correlations measured.

References in corpus (4)

• 14-qubit entanglement: creation and coherence
• Universal digital quantum simulation with trapped ions
• Equilibration and macroscopic quantum fluctuations in the Dicke model
• Sub-Poissonian number differences in four-wave mixing of matter waves

Cited by in corpus (6)

• Scalable quantum simulation of pulsed entanglement and Einstein-Podolsky-Rosen steering in optomechanics
• Probabilistic quantum phase-space simulation of Bell violations and their dynamical evolution
• Quantum probabilistic sampling of multipartite 60-qubit Bell inequality violations
• Phase space methods for Majorana fermions
• Dual form of the phase-space classical simulation problem in quantum optics
• Initial states and apodisation for quantum field simulations in phase-space