6 papers · 1 filter
Quantum simulation of circular cluster interactions in a linear spin chain
Alexander van Lomwel, Hongzheng Zhao, Florian Mintert
The preparation of ground states of Hamiltonians with symmetries that are fundamentally different than those of the underlying device is a central challenge for quantum technologie…
Quantum information spreading in inhomogeneous spin ensembles
Rahul Gupta, Florian Mintert, Himadri Shekhar Dhar
We present a Krylov space based theoretical framework for modeling inhomogeneous spin ensembles with arbitrary distributions of spin frequencies and couplings. The framework is the…
Optimally Controlled Storage of a Qubit in an Inhomogeneous Spin Ensemble
Rahul Gupta, Florian Mintert, Himadri Shekhar Dhar
The storage of quantum information in spin-ensembles is limited by practically unavoidable inhomogeneous broadening, and the macroscopic number of spins in such an ensemble makes t…
Mitigating many-body quantum crosstalk with tensor-network robust control
Nguyen H. Le, Florian Mintert, Eran Ginossar
Quantum crosstalk poses a major challenge to scaling up quantum computations as its strength is typically unknown and its effect accumulates exponentially as system size grows. Her…
Analytically Exact Quantum Simulation of N-Body Interactions via Untunable Decentralized Hamiltonians for Implementing the Toric Code and Its Modifications
Haochen Zhao, Florian Mintert
We propose a new quantum simulation method for simulating N-body interactions, which are tensor products of N Pauli operators, in an analytically exact manner. This method iterativ…
Creation and manipulation of surface code defects with quantum optimal control
Omar Raii, Anirban Dey, Florian Mintert +1
The surface code is a spin-1/2 lattice system that can exhibit non-trivial topological order when defects are punctured in the lattice and thus can be used as a stabiliser code. Th…