A robust entangling gate for polar molecules using magnetic and microwave fields
Physical Review A American Physical Society 101:6 (2020) 062308
Abstract:
Polar molecules are an emerging platform for quantum technologies based on their long-range electric dipole–dipole interactions, which open new possibilities for quantum information processing and the quantum simulation of strongly correlated systems. Here, we use magnetic and microwave fields to design a fast entangling gate with > 0.999 fidelity and which is robust with respect to fluctuations in the trapping and control fields and to small thermal excitations. These results establish the feasibility to build a scalable quantum processor with a broad range of molecular species in optical-lattice and optical-tweezers setups.Robust entangling gate for polar molecules using magnetic and microwave fields
PHYSICAL REVIEW A 101:6 (2020) ARTN 062308
Rescaling Interactions for Quantum Control
PHYSICAL REVIEW APPLIED 13:3 (2020) ARTN 034002
Rescaling interactions for quantum control
Physical Review Applied American Physical Society 13:3 (2020) 034002
Abstract:
A powerful control method in experimental quantum computing is the use of spin echoes, employed to select a desired term in the system’s internal Hamiltonian, while refocusing others. Here, we address a more general problem, describing a method to not only turn on and off particular interactions but also to rescale their strengths so that we can generate any desired effective internal Hamiltonian. We propose an algorithm based on linear programming for achieving time-optimal rescaling solutions in fully coupled systems of tens of qubits, which can be modified to obtain near-time-optimal solutions for rescaling systems with hundreds of qubits.Witnesses of non-classicality for simulated hybrid quantum systems
Journal of Physics Communications IOP Publishing 4:2 (2020) 025013