7 papers
Blockade-induced exchange primitives for scalable neutral-atom QPU
Mohammadsadegh Khazali, Klaus Mølmer
Many quantum hardware platforms natively support either phase or exchange operations, yet converting between these two forms of control typically incurs substantial overhead. Rydbe…
High fidelity photon-photon gates by scattering off a two-level quantum emitter
Love A. Pettersson, Victor R. Christiansen, Klaus Mølmer +1
We present a scheme for implementing a high-fidelity non-linear phase shift on a photonic state. The scheme is based on repeated scattering off a two-level quantum emitter embedded…
Adiabatic preparation of many-body quantum states: getting the beginning and ending right
Emil T. M. Pedersen, Freek Witteveen, Klaus Mølmer +1
We present numerical calculations, and simulations performed on a Rydberg atom quantum simulator, of the adiabatic evolution of many-body quantum systems around a quantum phase tra…
Optimal Control for Rydberg multi-qubit operations
Hossein Abedi, Mohammadsadegh Khazali, Klaus Mølmer
Quantum computing algorithms can be decomposed into a universal set of elementary one- and two-qubit gates. Different physical implementations of quantum computing, however, employ…
Deterministic carving of quantum states with Grover's algorithm
Omar Nagib, M. Saffman, K. Mølmer
We show that iteration of a few ( ) unitary steps of Grover's algorithm suffices to perfectly prepare a Dicke state of atoms in a cavity. We also show that a few…
Efficient preparation of entangled states in cavity QED with Grover's algorithm
Omar Nagib, M. Saffman, K. Mølmer
We propose to employ the amplification mechanism of Grover's search algorithm to efficiently prepare entangled states of an ensemble of qubits. The conditional change of sign emplo…