125 citations · 207 across the 3 of their papers we have counts for
8 papers
Towards an experimentally feasible controlled-phase gate on two blockaded Rydberg atoms
Matthias M. Müller, Michael Murphy, Simone Montangero +3
We investigate the implementation of a controlled-Z gate on a pair of Rydberg atoms in spatially separated dipole traps where the joint excitation of both atoms into the Rydberg le…
Optimizing entangling quantum gates for physical systems
M. M. Müller, D. M. Reich, M. Murphy +5
Optimal control theory is a versatile tool that presents a route to significantly improving figures of merit for quantum information tasks. We combine it here with the geometric th…
Communication at the quantum speed limit along a spin chain
Michael Murphy, Simone Montangero, Vittorio Giovannetti +1
Spin chains have long been considered as candidates for quantum channels to facilitate quantum communication. We consider the transfer of a single excitation along a spin-1/2 chain…
Colloquium: Trapped ions as quantum bits -- essential numerical tools
Kilian Singer, Ulrich Poschinger, Michael Murphy +4
Trapped, laser-cooled atoms and ions are quantum systems which can be experimentally controlled with an as yet unmatched degree of precision. Due to the control of the motion and t…
Scalable quantum computation via local control of only two qubits
Daniel Burgarth, Koji Maruyama, Michael Murphy +4
We apply quantum control techniques to control a large spin chain by only acting on two qubits at one of its ends, thereby implementing universal quantum computation by a combinati…
Optimal Control at the Quantum Speed Limit
Tommaso Caneva, Michael Murphy, Tommaso Calarco +4
Optimal control theory is a promising candidate for a drastic improvement of the performance of quantum information tasks. We explore its ultimate limit in paradigmatic cases, and…