A single SAFE-GRAPE-optimized global strain pulse is shown by simulation to give O(1) control of inhomogeneous SiV ensembles, with more robust dynamical decoupling and O(10^2 to 10^4) more usable heralded entanglement links than interleaved bang-bang CPMG.
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abstract
We prove that the complexity class QIP, which consists of all problems having quantum interactive proof systems, is contained in PSPACE. This containment is proved by applying a parallelized form of the matrix multiplicative weights update method to a class of semidefinite programs that captures the computational power of quantum interactive proofs. As the containment of PSPACE in QIP follows immediately from the well-known equality IP = PSPACE, the equality QIP = PSPACE follows.
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Programmable Quantum Matter: Heralding Large Cluster States in Driven Inhomogeneous Spin Ensembles
A single SAFE-GRAPE-optimized global strain pulse is shown by simulation to give O(1) control of inhomogeneous SiV ensembles, with more robust dynamical decoupling and O(10^2 to 10^4) more usable heralded entanglement links than interleaved bang-bang CPMG.