333 citations · 741 across the 7 of their papers we have counts for
7 papers
The distribution of quantum fidelities
Line Hjortshoj Pedersen, Niels Martin Moller, Klaus Molmer
When applied to different input states, an imperfect quantum operation yields output states with varying fidelities, defined as the absolute square of their overlap with the desire…
Few qubit atom-light interfaces with collective encoding
Line Hjortshoj Pedersen, Klaus Molmer
Samples with few hundred atoms within a few micrometer sized region of space are large enough to provide efficient cooperative absorption and emission of light, and small enough to…
Error correction in ensemble registers for quantum repeaters and quantum computers
Etienne Brion, Line Hjortshoj Pedersen, Mark Saffman +1
We propose to use a collective excitation blockade mechanism to identify errors that occur due to disturbances of single atoms in ensemble quantum registers where qubits are stored…
Controllability and universal three-qubit quantum computation with trapped electron states
L. H. Pedersen, C. Rangan
We show how to control and perform universal three-qubit quantum computation with trapped electron quantum states. The three qubits are the electron spin, and the first two quantum…
Fidelity of quantum operations
Line Hjortshoj Pedersen, Klaus Molmer, Niels Martin Moller
We present a derivation and numerous applications of a compact explicit formula for the average fidelity of a quantum operation on a finite dimensional quantum system. The formula…
Universal Quantum Computation in a Neutral Atom Decoherence Free Subspace
E. Brion, L. H. Pedersen, K. Molmer +2
In this paper, we propose a way to achieve protected universal computation in a neutral atom quantum computer subject to collective dephasing. Our proposal relies on the existence…