265 citations · 3.6k across the 120 of their papers we have counts for
10 papers · 1 filter
Identifying combinatorially symmetric Hidden Markov Models
Daniel Klaus Burgarth
We provide a sufficient criterion for the unique parameter identification of combinatorially symmetric Hidden Markov Models based on the structure of their transition matrix. If th…
Evolution-free Hamiltonian parameter estimation through Zeeman markers
Daniel Burgarth, Ashok Ajoy
We provide a protocol for Hamiltonian parameter estimation which relies only on the Zeeman effect. No time-dependent quantities need to be measured, it fully suffices to observe sp…
Positive Hamiltonians can give purely exponential decay
Daniel Burgarth, Paolo Facchi
It is commonly claimed that only Hamiltonians with a spectrum unbounded both above and below can give purely exponential decay. Because such Hamiltonians have no ground state, they…
Dynamical Decoupling of Unbounded Hamiltonians
Christian Arenz, Daniel Burgarth, Paolo Facchi +1
We investigate the possibility to suppress interactions between a finite dimensional system and an infinite dimensional environment through a fast sequence of unitary kicks on the…
The roles of drift and control field constraints upon quantum control speed limits
Christian Arenz, Benjamin Russell, Daniel Burgarth +1
In this work we derive a lower bound for the minimum time required to implement a target unitary transformation through a classical time-dependent field in a closed quantum system.…
Driven quantum dynamics: will it blend?
Leonardo Banchi, Daniel Burgarth, Michael J. Kastoryano
Randomness is an essential tool in many disciplines of modern sciences, such as cryptography, black hole physics, random matrix theory and Monte Carlo sampling. In quantum systems,…