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Symmetry as a route to generalized bosonic Kitaev chains
Gideon Lee, Tony Jin, Aashish A. Clerk
The bosonic Kitaev chain (BKC) model is a deceptively simple looking quadratic pairing Hamiltonian. Despite being purely Hermitian, it exhibits a number of striking non-Hermitian t…
Quantum-to-Classical Computability Transition via Negative Markov Chains
Hugo Lóio, Jacopo De Nardis, Tony Jin
We develop a recently introduced representation of quantum dynamics based on sampling negative Markov chain processes. By introducing particles and antiparticles, this formalism ma…
Measurement-induced phase transition in a single-body tight-binding model
Tony Jin, David G. Martin
We study the statistical properties of a single free quantum particle evolving coherently on a discrete lattice in spatial dimensions where every lattice site is addition…
Entanglement phase transition due to reciprocity breaking without measurement or post-selection
Gideon Lee, Tony Jin, Yu-Xin Wang +2
Despite its fully unitary dynamics, the bosonic Kitaev chain (BKC) displays key hallmarks of non-Hermitian physics including non-reciprocal transport and the non-Hermitian skin eff…
Exact description of transport and non-reciprocity in monitored quantum devices
João Ferreira, Tony Jin, Jochen Mannhart +2
We study non-interacting fermionic systems undergoing continuous monitoring and driven by biased reservoirs. Averaging over the measurement outcomes, we derive exact formulas for t…
Interplay between transport and quantum coherences in free fermionic systems
Tony Jin, Tristan Gautié, Alexandre Krajenbrink +2
We study the quench dynamics in free fermionic systems in the prototypical bipartitioning protocol obtained by joining two semi-infinite subsystems prepared in different states, ai…