4 papers · 1 filter
Exponential de Finetti Theorems for Fermionic Gaussian States
JÄdrzej Burkat, MichaÅ StudziÅski, Sergii Strelchuk
We prove an exponential variant of the Gaussian de Finetti theorem: the subsystems of permutation-invariant, free-fermionic Gaussian states are well-approximated by convex combinat…
The Power of Power-of-SWAP: Postselected Quantum Computation with the Exchange Interaction
JÄdrzej Burkat, Sergii Strelchuk, MichaÅ StudziÅski
We introduce Exchange Quantum Polynomial Time (XQP) circuits, which comprise quantum computation using only computational basis SPAM and the isotropic Heisenberg exchange interacti…
Optimal pure state cloning and transposition are complementary channels
Vanessa BrziÄ, Dmitry Grinko, MichaÅ StudziÅski +1
State cloning and state transposition are fundamental transformations which, despite being desirable, cannot be perfectly realised due to two conceptually distinct constraints of q…
Port-based teleportation under pure-dephasing decoherence
Rajendra S. Bhati, MichaÅ StudziÅski, JarosÅaw K. Korbicz
We study deterministic port based teleportation in the presence of noise affecting both the entangled resource state and the measurement process. We focus on a physically motivated…