4 papers
Contractivity of time-dependent driven-dissipative systems
Lasse H. Wolff, Daniel Malz, Rahul Trivedi
In a number of physically relevant contexts, a quantum system interacting with a decohering environment is simultaneously subjected to time-dependent controls and its dynamics is t…
Tight eigenvalue bound on the traveling salesman problem
Lasse H. Wolff
A lower bound on the solution to the traveling salesman problem is provided, which is expressed in terms of eigenvalues related to the distance matrix for the problem. This bound h…
Characterizing the Lovasz theta function via walk generating functions
Lasse Harboe Wolff
A new characterization of the Lovasz theta function is provided by relating it to the (weighted) walk-generating function, thus establishing a relationship between two seemingly qu…
Fundamental Limit on the Power of Entanglement Assistance in Quantum Communication
Lasse H. Wolff, Paula Belzig, Matthias Christandl +2
The optimal rate of reliable communication over a quantum channel can be enhanced by pre-shared entanglement. Whereas the enhancement may be unbounded in infinite-dimensional setti…